CN108961786B - Traffic organization method for intersection with wide central isolation zone - Google Patents

Traffic organization method for intersection with wide central isolation zone Download PDF

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CN108961786B
CN108961786B CN201810855642.8A CN201810855642A CN108961786B CN 108961786 B CN108961786 B CN 108961786B CN 201810855642 A CN201810855642 A CN 201810855642A CN 108961786 B CN108961786 B CN 108961786B
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waiting area
phase
east
west
north
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CN108961786A (en
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祖永昶
卢健
付强
王建强
邱红桐
华璟怡
顾金刚
王波
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Traffic Management Research Institute of Ministry of Public Security
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Traffic Management Research Institute of Ministry of Public Security
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/07Controlling traffic signals
    • G08G1/08Controlling traffic signals according to detected number or speed of vehicles
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/07Controlling traffic signals
    • G08G1/081Plural intersections under common control
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/095Traffic lights
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/096Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase

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  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention provides a traffic organization method of an intersection with a wide central isolation zone, which utilizes the space of the intersection of the road generated by the existence of the central isolation zone to set a dynamic variable waiting area, the dynamic variable waiting area is arranged in the intersection of the road corresponding to the central isolation zone, a variable lane is arranged in the dynamic variable waiting area, a waiting area signal lamp is respectively arranged in each dynamic variable waiting area, a variable lane indicating sign is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane, when the central isolation zone is positioned in the middle of the road in the east-west direction, the dynamic variable waiting area in the intersection of the road is correspondingly set as an east waiting area and a west waiting area, vehicles circularly pass through according to a set phase sequence, the clear time of the intersection is compressed through reasonable phase setting, the intersection passing efficiency is improved, and the goal of passing more traffic flows in unit time is realized through space-time optimization, the vehicle overflow is avoided, and the passing efficiency is improved.

Description

Traffic organization method for intersection with wide central isolation zone
Technical Field
The invention relates to the field of urban road traffic organization, in particular to a traffic organization method for an intersection with a wide central isolation zone.
Background
In urban traffic, the traffic capacity of road intersections directly affects and restricts the traffic efficiency of the whole road network, which becomes a bottleneck of urban traffic, and how to improve the traffic efficiency of the intersections is an effective means for solving traffic problems.
At present, in many cities, due to reasons of road widening, large-scale road construction, viaduct beam construction, natural river obstruction and the like, large-scale intersections with wide central isolation are formed in the cities. The intersection has the difficulty that traffic organization is inconvenient to carry out due to overlarge intersection space, and the traffic organization is difficult. The existing intersection is mainly organized in the following ways: (1) the intersection is divided into two small intersections for signal control, but the intersection is often improperly coordinated due to overlarge flow in a peak period, and vehicles at the intersection are easy to overflow in the peak period; (2) the signal lamp control is carried out according to the conventional intersection mode, but the traffic distance is too long, the emptying time is too long, the traffic efficiency is not high due to too large intersection space, and even traffic accidents are easily caused due to untimely emptying.
Disclosure of Invention
Aiming at the problems, the invention provides a traffic organization method for an intersection with a wide central isolation zone, which utilizes the space of the road intersection generated by the existence of the central isolation zone to set a dynamic variable waiting area, utilizes the space resources of the intersection to the maximum extent, compresses the clearing time of the intersection through reasonable phase setting, improves the passing efficiency of the intersection, and realizes the aim of passing more traffic flows in unit time through space-time optimization, thereby avoiding vehicle overflow and improving the passing efficiency.
The technical scheme is as follows: a traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in a road intersection, a dynamic variable waiting area is arranged corresponding to a central isolation belt, a variable lane is arranged in the dynamic variable waiting area, a signal lamp of the waiting area is arranged in each dynamic variable waiting area, a variable lane indicator is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane, when the central isolation belt is positioned in the middle of a road in the east-west direction, the dynamic variable waiting area in the road intersection is correspondingly arranged into an east waiting area and a west waiting area, and vehicles can pass through in a circulating mode according to the following phase sequence:
phase 1: when the east import is released, the function of the variable lane in the west waiting area is adjusted to be 'straight-going'; at this time, the south entry vehicle enters the east waiting area to wait, and the lane-changing function of the east waiting area is adjusted to 'left turn + straight travel'.
Phase 2: the east import stops releasing, the west waiting area continues releasing, the left-turning vehicle at the east import is ensured to move to the south through the west waiting area, the west waiting area is emptied, and the vehicle is prevented from overflowing; subsequently, the south entry and the east standby area are cleared.
Phase 3: the south entrance signal is adjusted to be red light in advance, vehicles are forbidden to enter the east waiting area, the west waiting area stops releasing, and vehicles in the road of the south half-width road are emptied; the east waiting area continues to be released, and vehicles in the east waiting area are emptied to avoid overflow;
phase 4: the west import starts to release, the east waiting area keeps the release state, and the function of the variable lane is adjusted to be 'straight-going'; the north-entry vehicles enter the west waiting area to wait for passing, and the lane-changing function of the west waiting area is adjusted to 'left turn + straight going'.
Phase 5: the west entrance stops releasing, the east waiting area continues releasing, the left-turning vehicle at the west entrance is ensured to drive to the north through the east waiting area, the east waiting area is emptied, and the vehicle is prevented from overflowing; subsequently, the north import and the west waiting area are released.
Phase 6: the north entrance signal is adjusted to be a red light in advance, vehicles are forbidden to enter a west waiting area, the east waiting area stops releasing, and vehicles in a north half-width road are emptied; and the west waiting area continues to be released, and vehicles in the west waiting area are emptied to avoid overflow.
Furthermore, each inlet of the road intersection is respectively provided with a flow detector, and the division of the number of the left-turn lanes and the straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
The requirements for green and clear six phase signals at a road intersection are as follows:
(1) west waiting area green time t of phase 11The green time t of the west waiting area of the phase 22The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(2) green time t of east standby row zone of phase 23Green time t of east standby zone with phase 34The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(3) green time t of east standby zone of phase 45Green time t of east standby zone with phase 36The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) west waiting area green time t of phase 57The green time t of the west waiting area of the phase 68The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(5) when the phase is converted to the phase, the interior of the intersection is ensured to be empty, wherein
When the phase 1 is converted into the phase 2, clearing the north half way;
when the phase 3 is converted into the phase 4, clearing the east half way;
when the phase 4 is converted into the phase 5, clearing the south half way;
when the phase 6 is converted into the phase 1, emptying the west half way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
A traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in the road intersection, a dynamic variable waiting area is arranged corresponding to the central isolation zone, a variable lane is arranged in the dynamic variable waiting area, a signal lamp of the waiting area is respectively arranged in each dynamic variable waiting area, a variable lane dividing indication mark is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane,
when the central isolation belt is positioned in the middle of a road in the south-north direction, the dynamic variable waiting areas in the road intersection are correspondingly set as a south waiting area and a north waiting area, and vehicles can pass through in a circulating mode according to the following phase sequence:
phase 1: when the south import is released, the waiting area on the north side keeps the released state, and the function of the variable lane is adjusted to be 'straight-going'; the west import vehicle enters the south waiting area to wait for passing, and the lane-changing function of the south waiting area is adjusted to 'left turn + straight going';
phase 2: the release of the south import is stopped, the release of the north waiting area is continued, the left-turning vehicles at the south import are guaranteed to run to the west through the north waiting area, the north waiting area is emptied, and the vehicles are prevented from overflowing; then, the west import and the south waiting area are released;
phase 3: the west entrance signal is adjusted to a red light in advance, vehicles are prohibited from entering a south waiting area, the north waiting area stops releasing, and vehicles in a west half-way entrance are emptied; the waiting area on the south side continues to be released, and vehicles in the waiting area on the south side are emptied to avoid overflowing;
phase 4: the north import starts to release, the south waiting area keeps the release state, and the function of the variable lane is adjusted to be 'straight-going'; the east imported vehicle enters a north waiting area to wait for passing, and the lane-changing function of the north waiting area is adjusted to 'left turn + straight going';
phase 5: the release of the north import is stopped, the release of the south waiting area is continued, the left-turning vehicles at the north import are ensured to pass through the south waiting area and move to the east, the south waiting area is emptied, and the vehicles are prevented from overflowing; the east import and the north waiting area are released;
phase 6: the east import signal is adjusted to be a red light in advance, the vehicle is forbidden to enter a waiting area on the north side, the waiting area on the south side stops releasing, and the vehicle in a half-width intersection on the east side is cleared; and the north waiting area continues to be released, and vehicles in the north waiting area are emptied to avoid overflow.
Furthermore, each inlet of the road intersection is respectively provided with a flow detector, and the division of the number of the left-turn lanes and the straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
The requirements for green and clear six phase signals at a road intersection are as follows:
(1) phase 1 green time t of north standby area1The green time t of the north waiting area of phase 22The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(2) south waiting area green time t of phase 23And the south waiting area green time t of the phase 34The vehicle in the waiting area on the south side can be emptied, or the queuing length of the waiting area on the south side is ensured not to overflow the waiting area on the south side;
(3) south waiting area green light time t of phase 45And the south waiting area green time t of the phase 36The vehicle in the waiting area on the south side can be emptied, or the queuing length of the waiting area on the south side is ensured not to overflow the waiting area on the south side;
(4) phase 5 green time t of north standby area7And the green time t of the north waiting area of the phase 68The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(5) when the phase is converted to the phase, the inside of the intersection is ensured to be emptied:
when the phase 1 is converted into the phase 2, clearing the south half way;
when the phase 3 is converted into the phase 4, emptying the west half way;
when the phase 4 is converted into the phase 5, clearing the north half way;
when the phase 6 is converted into the phase 1, clearing the east half-way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
A traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in the road intersection, a dynamic variable waiting area is arranged corresponding to the central isolation belt, a variable lane is arranged in the dynamic variable waiting area, each dynamic variable waiting area is respectively provided with a waiting area signal lamp, a variable lane indicator is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane, when the central isolation belt is arranged in the middle of the roads in the east-west direction and the north-south direction, the dynamic variable waiting area in the road intersection is correspondingly arranged into an east waiting area, a west waiting area, a south waiting area and a north waiting area, and vehicles can pass through circularly according to the following phase sequence:
phase 1: the south waiting area stops releasing, the east entrance, the north waiting area and the west waiting area release, the variable lane function of the north waiting area is adjusted to 'go straight + turn left', and the variable lane function of the west waiting area is adjusted to 'go straight'; the south entry vehicle enters an east waiting area to wait for passing, and the lane-changing function of the east waiting area is adjusted to 'left turn + straight going';
phase 2: the east import stops releasing, the west waiting area continues releasing, the left-turning vehicle at the east import is ensured to move to the south through the west waiting area, the west waiting area is emptied, and the vehicle is prevented from overflowing; then, releasing the south import, the east waiting area and the north waiting area;
phase 3: the west waiting area stops releasing, the south import area, the east waiting area and the north waiting area continue releasing, and the function of the changeable lane of the north waiting area is adjusted to 'straight driving'; vehicles at the west entrance enter the south waiting area to wait for passing, and the lane-changing function of the south waiting area is adjusted to be 'left-turning + straight-going';
phase 4: the release of the south import is stopped, the release of the north waiting area is continued, the left-turning vehicles at the south import are guaranteed to run to the west through the north waiting area, the north waiting area is emptied, and the vehicles are prevented from overflowing; the west import, the south waiting area and the east waiting area are released;
phase 5: the north waiting area stops releasing, the west entrance, the south waiting area and the east waiting area continue releasing, wherein the lane function of the east waiting area is adjusted to be 'straight going'; the north-entry vehicle enters a west waiting area to wait for passing, and the function of the variable lane of the west waiting area is adjusted to be 'left-turn + straight-going';
phase 6: the west entrance stops releasing, the east waiting area continues releasing, the left-turning vehicle at the west entrance is ensured to drive to the north through the east waiting area, the east waiting area is emptied, and the vehicle is prevented from overflowing; the north import, the west waiting area and the south waiting area are released;
phase 7: the east waiting area stops releasing, the north import waiting area, the west waiting area and the south waiting area continue releasing, wherein the lane function of the south waiting area is adjusted to be 'straight going'; the east import vehicle enters a north waiting area to wait for passing, and the lane function is adjusted to 'left turn + straight going';
phase 8: the release of the north import is stopped, the release of the south waiting area is continued, the left-turning vehicles at the north import are ensured to pass through the south waiting area and move to the east, the south waiting area is emptied, and the vehicles are prevented from overflowing; and the east import, the north waiting area and the west waiting area are released.
Furthermore, each inlet of the road intersection is respectively provided with a flow detector, and the division of the number of the left-turn lanes and the straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
Further, the green light release time of the intersection in four directions is determined by adopting an HCM method, and meanwhile, the release time of partial phase signals meets the following conditions:
(1) phase 1 green time t1Green time t of phase 22And green time t of phase 612The sum of the waiting time and the waiting time can ensure that vehicles in the west waiting area can be emptied or the queuing length of the west waiting area can not overflow the west waiting area;
(2) green time t of phase 23Green time t of phase 34And green time t of phase 45In addition, the vehicles in the north waiting area are emptied as far as possible, or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(3) green time t of phase 46、Green time t of phase 57And green time t of phase 68In addition, vehicles in the east waiting area are emptied as far as possible, or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) green time t of phase 69Green time t of phase 710And green time t of phase 811In addition, vehicles in the south waiting area are emptied as far as possible, or the shortest queuing length of the waiting area is ensured and the vehicles do not overflow into the road junction;
(5) when the phase is switched, the interior of the intersection should be ensured to be empty, the central isolation belt is arranged, so that only the intersection space at the diagonal side needs to be cleaned, when the phase 1 is switched to the phase 2, the phase 3 is switched to the phase 4, the phase 5 is switched to the phase 6, the phase 7 is switched to the phase 8, the phase 2 is switched to the phase 3, the phase 4 is switched to the phase 5, the phase 6 is switched to the phase 7, the phase 8 is switched to the phase 1, the phase 6 is switched to the northwest, the phase 8 is switched to the southwest, the emptying duration can be determined according to the road width of the diagonal and the real-time traffic speed of the vehicle detected by the detector, the emptying time t = L/v, wherein the road width of the diagonal is L, and the real-time traffic speed of the vehicle detected by the detector is.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the dynamic variable waiting area is set by utilizing the central isolated space, so that the queuing space of the vehicle is increased;
2. through the arrangement of the built-in dynamic variable waiting area, the stop line can move forwards, the distance between the vehicles passing through the intersection is shortened, and the passing time is reduced;
3. the traffic flow data detected by the flow detector is combined with the setting of phase release to realize the dynamic adjustment of the lane function and the lane number of the to-be-driven area, so that space resources are more reasonably distributed;
4. the arrangement of the cyclic release and lap joint phase signals is adopted, the traffic conflict between intersections is reduced, yellow light or full red clearing time is not required to be arranged between part of phase transitions, the intersection space is divided into a part of road passing areas and a part of road clearing areas when the other part of phase transitions are in operation, the intersection clearing time and space are effectively compressed, the intersection is always in a continuous vehicle passing state, and the intersection signal release efficiency is effectively improved.
Drawings
FIG. 1 is a schematic illustration of an intersection with a wide central isolation zone according to specific embodiment 1 of the present invention;
fig. 2 is a schematic diagram of signal passing phases 1 and 2 of embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of signal passing phases 3 and 4 of embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of signal passing phases 5 and 6 of embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of signal passing phases 1 and 2 of embodiment 2 of the present invention;
FIG. 6 is a schematic diagram of signal passing phases 3 and 4 of embodiment 2 of the present invention;
FIG. 7 is a schematic diagram of signal passing phases 5 and 6 of embodiment 2 of the present invention;
FIG. 8 is a schematic illustration of an intersection with a wide central median strip according to specific embodiment 3 of the present invention;
FIG. 9 is a schematic diagram of signal passing phases 1 and 2 of embodiment 3 of the present invention;
FIG. 10 is a schematic diagram of signal passing phases 3 and 4 of embodiment 3 of the present invention;
FIG. 11 is a schematic diagram of signal passing phases 5 and 6 of embodiment 3 of the present invention;
fig. 12 is a schematic diagram of signal release phases 7 and 8 of embodiment 3 of the present invention.
Detailed Description
Specific example 1: referring to fig. 1, 2, 3 and 4, in the traffic organization method for an intersection with a wide central isolation zone, the central isolation zone 1 is located in the middle of a road in an east-west direction, an east-side waiting area 3 and a west-side waiting area 4 are arranged in the intersection 2, variable lanes are arranged in the east-side waiting area 3 and the west-side waiting area 4, waiting area signal lamps 12 are respectively arranged in the east-side waiting area 3 and the west-side waiting area 4, variable lane division indication signs (not shown in the figure) are arranged in front of the east-side waiting area 3 and the west-side waiting area 4 and used for guiding variable changes, signal lamps 11 are respectively arranged at an east inlet 7, a west inlet 8, a south inlet 9 and a north inlet 10 of the intersection, and vehicles can pass circularly according to the following phase sequence:
phase 1: when the east import 7 is released, the function of the variable lane of the west waiting area 4 is adjusted to be 'straight-going'; at this time, the vehicle enters the east waiting area 3 for waiting at the south entrance 9, and the variable lane function of the east waiting area 3 is adjusted to "turn left + go straight".
Phase 2: the east import 7 stops releasing, the west waiting area 4 continues releasing, the left-turning vehicle of the east import 7 is ensured to move to the south through the west waiting area 4, the west waiting area 4 is emptied, and the vehicle overflow is avoided; subsequently, the south entry 9 and the east pending zone 3 are cleared.
Phase 3: the signal of the south entrance 9 is adjusted to be red light in advance, vehicles are forbidden to enter the east waiting area 3, the west waiting area 4 stops releasing, and vehicles in the intersection of the south half-width road are emptied; the east waiting area 3 keeps releasing continuously, and the vehicles 3 in the east waiting area are emptied to avoid overflowing;
phase 4: the west entrance 8 starts to release, the east waiting area 3 keeps the release state, and the function of the variable lane is adjusted to be 'straight-going'; the vehicles at the north import 10 enter the west waiting area 4 to wait for passing, and the function of the variable lane of the west waiting area 4 is adjusted to be 'left turn + straight going'.
Phase 5: the west entrance 8 stops releasing, the east waiting area 3 continues releasing, it is guaranteed that a left-turning vehicle at the west entrance 8 travels northwards through the east waiting area 3, the east waiting area 3 is emptied, and the vehicle is prevented from overflowing; subsequently, the north entry 10 and the west pending zone 4 are cleared.
Phase 6: the signal of the north entrance 10 is adjusted to be red light in advance, vehicles are forbidden to enter the west waiting area 4, the east waiting area 3 stops releasing, and vehicles in the north half-width road are emptied; and the west waiting area 4 keeps releasing continuously, and vehicles in the west waiting area 4 are emptied to avoid overflowing.
Meanwhile, each entrance of the intersection 2 is provided with a flow detector (not shown in the figure), and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
Referring to fig. 2, 3 and 4, the requirements for green and clear signals of six phase signals at the intersection in the present embodiment are as follows:
(1) west waiting area green time t of phase 11The green time t of the west waiting area of the phase 22The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(2) green time t of east standby row zone of phase 23Green time t of east standby zone with phase 34The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(3) green time t of east standby zone of phase 45Green time t of east standby zone with phase 36The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) west waiting area green time t of phase 57The green time t of the west waiting area of the phase 68The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(5) when the phase is converted to the phase, the interior of the intersection is ensured to be empty, wherein
When the phase 1 is converted into the phase 2, clearing the north half way;
when the phase 3 is converted into the phase 4, clearing the east half way;
when the phase 4 is converted into the phase 5, clearing the south half way;
when the phase 6 is converted into the phase 1, emptying the west half way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
Specific example 2:
referring to fig. 5, 6 and 7, in the traffic organization method for an intersection with a wide central isolation zone, the central isolation zone 1 is located in the middle of roads in the north-south direction, a south waiting area 5 and a north waiting area 6 are arranged in a road intersection 2, variable lanes are arranged in the south waiting area 5 and the north waiting area 6, the south waiting area 5 and the north waiting area 6 are respectively provided with a waiting area signal lamp 5, variable lane-dividing indication signs (not shown) are arranged in front of the south waiting area 5 and the north waiting area 6 and used for guiding the variable lane change, signal lamps 11 are respectively arranged at an east entrance 7, a west entrance 8, a south entrance 9 and a north entrance 10 of the road intersection, and vehicles can pass in a circulating mode according to the following phase sequence:
phase 1: when the south import is in line 9, the north waiting area 6 keeps a release state, and the function of the variable lane is adjusted to be 'straight-going'; at the moment, 8 vehicles from the west enter the south waiting area 5 to pass through, and the variable lane function of the south waiting area 5 is adjusted to be 'left turn + straight going';
phase 2: the south import 9 stops releasing, the north waiting area 6 continues releasing, the left-turning vehicles at the south import 9 are guaranteed to run towards the west through the north waiting area 6, the north waiting area 6 is emptied, and the vehicles are prevented from overflowing; subsequently, the west entrance 8 and the south waiting area 5 are released;
phase 3: the signal of the west entrance 8 is adjusted to a red light in advance, the vehicle is prohibited to enter the south waiting area 5, the north waiting area 6 stops releasing, and the vehicle in the west half intersection is emptied; the south waiting area 5 keeps releasing continuously, and vehicles in the south waiting area 5 are emptied to avoid overflowing;
phase 4: the north import 10 starts to release, the south waiting area 5 keeps the release state, and the lane-changeable function is adjusted to 'straight-going'; the vehicle at the east import 7 enters the north waiting area 6 to wait for passing, and the lane-changeable function of the north waiting area 6 is adjusted to 'left turn + straight going';
phase 5: the north import 10 stops releasing, the south waiting area 5 continues releasing, the left-turning vehicles of the north import 10 are ensured to pass through the south waiting area 5 and move to the east, the south waiting area 5 is emptied, and the vehicles are prevented from overflowing; then, the east import 7 and the north waited area 6 are released;
phase 6: the signal of the east import 7 is adjusted to be red light in advance, the vehicle is forbidden to enter the waiting area 6 at the north side, the waiting area 5 at the south side stops releasing, and the vehicle in the middle of the east side road opening is cleared; the north waiting area 6 keeps releasing continuously, and vehicles in the north waiting area 6 are emptied to avoid overflowing;
each inlet of the road intersection is provided with a flow detector, and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
The requirements for green and clear six phase signals at a road intersection are as follows:
(1) phase 1 green time t of north standby area1The green time t of the north waiting area of phase 22The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(2) south waiting area green time t of phase 23And the south waiting area green time t of the phase 34The vehicle in the waiting area on the south side can be emptied, or the queuing length of the waiting area on the south side is ensured not to overflow the waiting area on the south side;
(3) south waiting area green light time t of phase 45And the south waiting area green time t of the phase 36In addition, it can ensure that the vehicles in the south waiting area are emptied orEnsuring that the queuing length of the south waiting area does not overflow the south waiting area;
(4) phase 5 green time t of north standby area7And the green time t of the north waiting area of the phase 68The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(5) when the phase is converted to the phase, the interior of the intersection is ensured to be empty,
when the phase 1 is converted into the phase 2, clearing the south half way;
when the phase 3 is converted into the phase 4, emptying the west half way;
when the phase 4 is converted into the phase 5, clearing the north half way;
when the phase 6 is converted into the phase 1, clearing the east half-way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
Specific example 3: referring to fig. 8, 9, 10 and 11, the traffic organization method of the intersection with the wide central isolation zone of the invention comprises that signal lamps are respectively arranged at an east inlet 7, a west inlet 8, a south inlet 9 and a north inlet 10 of a road intersection 1, the central isolation zone is arranged in the middle of roads in east-west direction and south-north direction in the road intersection 1, an east waiting zone 3, a west waiting zone 4, a south waiting zone 5 and a north waiting zone 6 are arranged corresponding to the central isolation zone 2, an isolation zone 13 is arranged between the east waiting zone 3, the west waiting zone 4, the south waiting zone 5 and the north waiting zone 6, variable lanes are arranged in the east waiting zone 3, the west waiting zone 4, the south waiting zone 5 and the north waiting zone 6, the east waiting zone 3, the west waiting zone 4, the south waiting zone 5 and the north waiting zone 6 are respectively provided with waiting zone signal lamps 5, and east waiting zone 3, Variable lane-dividing indication marks (not shown in the figure) are respectively arranged in front of the west waiting area 4, the south waiting area 5 and the north waiting area 6 and used for guiding variable lane change, and vehicles can pass through circularly according to the following phase sequence:
phase 1: the south waiting area 5 stops releasing, the east inlet 7, the north waiting area 6 and the west waiting area 4 release, the variable lane function of the north waiting area 6 is adjusted to 'go straight + turn left', and the variable lane function of the west waiting area 4 is adjusted to 'go straight'; the south import 9 vehicle enters the east waiting area 3 to wait for passing, and then the variable lane function of the east waiting area 3 is adjusted to 'left turn + straight' and then the vehicle enters the east waiting area 3 to wait for passing;
phase 2: the east import 7 stops releasing, the west waiting area 4 continues releasing, the left-turning vehicle of the east import 7 is ensured to move to the south through the west waiting area 4, the west waiting area 4 is emptied, and the vehicle overflow is avoided; subsequently, the south inlet 9, the east waiting area 3 and the north waiting area 6 are released;
phase 3: the west waiting area 4 stops releasing, the south inlet 9, the east waiting area 3 and the north waiting area 6 continue releasing, wherein the function of the changeable lane of the north waiting area 6 is adjusted to 'go straight'; vehicles at the west inlet 8 enter the south waiting area 5 to wait for passing, and the function of the variable lane of the south waiting area 5 is adjusted to be 'left turn + straight going';
phase 4: the south import 9 stops releasing, the north waiting area 6 continues releasing, the left-turning vehicles at the south import 9 are guaranteed to run towards the west through the north waiting area 6, the north waiting area 6 is emptied, and the vehicles are prevented from overflowing; the west inlet 8, the south waiting area 5 and the east waiting area 3 are released;
phase 5: the north waiting area 6 stops releasing, the west entrance 8, the south waiting area 5 and the east waiting area 3 continue releasing, wherein the lane function of the east waiting area 3 is adjusted to be 'straight-going'; the vehicle enters the west waiting area 4 for passing through at the north entrance 10, and the function of the variable lane of the west waiting area 4 is adjusted to be 'left turn + straight going';
phase 6: the west entrance 8 stops releasing, the east waiting area 3 continues releasing, it is guaranteed that a left-turning vehicle at the west entrance 8 travels northwards through the east waiting area 3, the east waiting area 3 is emptied, and the vehicle is prevented from overflowing; the north import 10, the west waiting area 4 and the south waiting area 5 are released;
phase 7: the east waiting area 3 stops releasing, the north entrance 10, the west waiting area 4 and the south waiting area 5 continue releasing, wherein the lane function of the south waiting area 5 is adjusted to 'go straight'; the east import 7 vehicle enters the north waiting area 6 to wait for passing, and the lane function is adjusted to 'left turn + straight going';
phase 8: the north import 10 stops releasing, the south waiting area 5 continues releasing, the left-turning vehicles of the north import 10 are ensured to pass through the south waiting area 5 and move to the east, the south waiting area 5 is emptied, and the vehicles are prevented from overflowing; the east import 7, the north waiting area 6 and the west waiting area 4 are released.
Each inlet of the road intersection is provided with a flow detector, and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
The method comprises the following steps of determining green light release time in four directions of an intersection by adopting an HCM (hybrid control method), wherein the release time of partial phase signals meets the following conditions:
(1) phase 1 green time t1Green time t of phase 22And green time t of phase 612The sum of the waiting time and the waiting time can ensure that vehicles in the west waiting area can be emptied or the queuing length of the west waiting area can not overflow the west waiting area;
(2) green time t of phase 23Green time t of phase 34And green time t of phase 45In addition, the vehicles in the north waiting area are emptied as far as possible, or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(3) green time t of phase 46、Green time t of phase 57And green time t of phase 68In addition, vehicles in the east waiting area are emptied as far as possible, or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) green time t of phase 69Green time t of phase 710And green time t of phase 811In addition, vehicles in the south waiting area are emptied as far as possible, or the shortest queuing length of the waiting area is ensured and the vehicles do not overflow into the road junction;
(5) when the phase is switched, the interior of the intersection should be ensured to be empty, the central isolation belt is arranged, so that only the intersection space at the diagonal side needs to be cleaned, when the phase 1 is switched to the phase 2, the phase 3 is switched to the phase 4, the phase 5 is switched to the phase 6, the phase 7 is switched to the phase 8, the phase 2 is switched to the phase 3, the phase 4 is switched to the phase 5, the phase 6 is switched to the phase 7, the phase 8 is switched to the phase 1, the phase 6 is switched to the northwest, the phase 8 is switched to the southwest, the emptying duration can be determined according to the road width of the diagonal and the real-time traffic speed of the vehicle detected by the detector, the emptying time t = L/v, wherein the road width of the diagonal is L, and the real-time traffic speed of the vehicle detected by the detector is.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the central isolated space is used for setting a waiting area, so that the queuing space of the vehicles is increased;
2. through the arrangement of the built-in waiting area, the stop line can move forwards, the distance between the vehicles passing through the intersection is shortened, and the passing time is reduced;
3. the dynamic adjustment of the lane function and the lane number of the to-be-driven area is realized by the traffic flow data detected by the traffic flow detection equipment and the setting of phase passing, so that space resources are more reasonably distributed;
4. the arrangement of the cyclic release and lap joint phase signals is adopted, the traffic conflict between intersections is reduced, yellow light or full red clearing time is not required to be arranged between part of phase transitions, the intersection space is divided into a part of road passing areas and a part of road clearing areas when the other part of phase transitions are in operation, the intersection clearing time and space are effectively compressed, the intersection is always in a continuous vehicle passing state, and the intersection signal release efficiency is effectively improved.

Claims (9)

1. A traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in a road intersection, a dynamic variable waiting area is arranged corresponding to a central isolation belt, a variable lane is arranged in the dynamic variable waiting area, a signal lamp of the waiting area is arranged in each dynamic variable waiting area, a variable lane indicator is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane, when the central isolation belt is positioned in the middle of a road in the east-west direction, the dynamic variable waiting area in the road intersection is correspondingly arranged into an east waiting area and a west waiting area, and vehicles can pass through in a circulating mode according to the following phase sequence:
phase 1: when the east import is released, the function of the variable lane in the west waiting area is adjusted to be 'straight-going'; at the moment, the south entry vehicle enters the east waiting area to wait, and the lane-changing function of the east waiting area is adjusted to 'left turn + straight travel';
phase 2: the east import stops releasing, the west waiting area continues releasing, the left-turning vehicle at the east import is ensured to move to the south through the west waiting area, the west waiting area is emptied, and the vehicle is prevented from overflowing; then, the south entrance and the east waiting area are released;
phase 3: the south entrance signal is adjusted to be red light in advance, vehicles are forbidden to enter the east waiting area, the west waiting area stops releasing, and vehicles in the road of the south half-width road are emptied; the east waiting area continues to be released, and vehicles in the east waiting area are emptied to avoid overflow;
phase 4: the west import starts to release, the east waiting area keeps the release state, and the function of the variable lane is adjusted to be 'straight-going'; the north-entry vehicles enter the west waiting area to wait for passing, and the lane-changing function of the west waiting area is adjusted to 'left turn + straight going';
phase 5: the west entrance stops releasing, the east waiting area continues releasing, the left-turning vehicle at the west entrance is ensured to drive to the north through the east waiting area, the east waiting area is emptied, and the vehicle is prevented from overflowing; then, the areas to be passed at the north import and the west are released;
phase 6: the north entrance signal is adjusted to be a red light in advance, vehicles are forbidden to enter a west waiting area, the east waiting area stops releasing, and vehicles in a north half-width road are emptied; and the west waiting area continues to be released, and vehicles in the west waiting area are emptied to avoid overflow.
2. The traffic organization method for intersections with wide central median barriers of claim 1, wherein: each inlet of the road intersection is provided with a flow detector, and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
3. The traffic organization method for intersections with wide central median barriers of claim 2, wherein: the requirements for green and clear six phase signals at a road intersection are as follows:
(1) west waiting area green time t of phase 11The green time t of the west waiting area of the phase 22The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(2) green time t of east standby row zone of phase 23Green time t of east standby zone with phase 34The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(3) green time t of east standby zone of phase 45Green time t of east standby zone with phase 36The vehicle in the east waiting area can be emptied or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) west waiting area green time t of phase 57The green time t of the west waiting area of the phase 68The sum of the waiting areas can ensure that vehicles in the west waiting area can be emptied, or the queuing length of the west waiting area can be ensured not to overflow the west waiting area;
(5) when the phase is converted to the phase, the interior of the intersection is ensured to be empty, wherein
When the phase 1 is converted into the phase 2, clearing the north half way;
when the phase 3 is converted into the phase 4, clearing the east half way;
when the phase 4 is converted into the phase 5, clearing the south half way;
when the phase 6 is converted into the phase 1, emptying the west half way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
4. A traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in the road intersection, a dynamic variable waiting area is arranged corresponding to the central isolation zone, a variable lane is arranged in the dynamic variable waiting area, a signal lamp of the waiting area is respectively arranged in each dynamic variable waiting area, a variable lane dividing indication mark is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane,
when the central isolation belt is positioned in the middle of a road in the south-north direction, the dynamic variable waiting areas in the road intersection are correspondingly set as a south waiting area and a north waiting area, and vehicles can pass through in a circulating mode according to the following phase sequence:
phase 1: when the south import is released, the waiting area on the north side keeps the released state, and the function of the variable lane is adjusted to be 'straight-going'; the west import vehicle enters the south waiting area to wait for passing, and the lane-changing function of the south waiting area is adjusted to 'left turn + straight going';
phase 2: the release of the south import is stopped, the release of the north waiting area is continued, the left-turning vehicles at the south import are guaranteed to run to the west through the north waiting area, the north waiting area is emptied, and the vehicles are prevented from overflowing; then, the west import and the south waiting area are released;
phase 3: the west entrance signal is adjusted to a red light in advance, vehicles are prohibited from entering a south waiting area, the north waiting area stops releasing, and vehicles in a west half-way entrance are emptied; the waiting area on the south side continues to be released, and vehicles in the waiting area on the south side are emptied to avoid overflowing;
phase 4: the north import starts to release, the south waiting area keeps the release state, and the function of the variable lane is adjusted to be 'straight-going'; the east imported vehicle enters a north waiting area to wait for passing, and the lane-changing function of the north waiting area is adjusted to 'left turn + straight going';
phase 5: the release of the north import is stopped, the release of the south waiting area is continued, the left-turning vehicles at the north import are ensured to pass through the south waiting area and move to the east, the south waiting area is emptied, and the vehicles are prevented from overflowing; the east import and the north waiting area are released;
phase 6: the east import signal is adjusted to be a red light in advance, the vehicle is forbidden to enter a waiting area on the north side, the waiting area on the south side stops releasing, and the vehicle in a half-width intersection on the east side is cleared; and the north waiting area continues to be released, and vehicles in the north waiting area are emptied to avoid overflow.
5. The traffic organization method for intersections with wide central median barriers of claim 4 wherein: each inlet of the road intersection is provided with a flow detector, and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
6. The traffic organization method for intersections with wide central median barriers of claim 5 wherein: the requirements for green and clear six phase signals at a road intersection are as follows:
(1) phase 1 green time t of north standby area1The green time t of the north waiting area of phase 22The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(2) south waiting area green time t of phase 23And the south waiting area green time t of the phase 34The vehicle in the waiting area on the south side can be emptied, or the queuing length of the waiting area on the south side is ensured not to overflow the waiting area on the south side;
(3) south waiting area green light time t of phase 45And the south waiting area green time t of the phase 36The vehicle in the waiting area on the south side can be emptied, or the queuing length of the waiting area on the south side is ensured not to overflow the waiting area on the south side;
(4) phase 5 green time t of north standby area7And the green time t of the north waiting area of the phase 68The vehicle in the north waiting area can be emptied or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(5) when the phase is converted to the phase, the inside of the intersection is ensured to be emptied:
when the phase 1 is converted into the phase 2, clearing the south half way;
when the phase 3 is converted into the phase 4, emptying the west half way;
when the phase 4 is converted into the phase 5, clearing the north half way;
when the phase 6 is converted into the phase 1, clearing the east half-way;
the transition from phase 2 to phase 3 and from phase 5 to phase 6 does not require setting of blanking time;
the emptying time length is determined according to the width of the intersection and the real-time passing speed of the vehicle detected by the detector, the emptying time t = L/v, the width of the intersection is L, and the real-time passing speed of the vehicle detected by the detector is v.
7. A traffic organization method for an intersection with a wide central isolation zone is characterized in that signal lamps are respectively arranged at an east inlet, a west inlet, a south inlet and a north inlet of the intersection, and the traffic organization method is characterized in that: in the road intersection, a dynamic variable waiting area is arranged corresponding to the central isolation belt, a variable lane is arranged in the dynamic variable waiting area, each dynamic variable waiting area is respectively provided with a waiting area signal lamp, a variable lane indicator is arranged in front of the dynamic variable waiting area and used for guiding the change of the variable lane, when the central isolation belt is arranged in the middle of the roads in the east-west direction and the north-south direction, the dynamic variable waiting area in the road intersection is correspondingly arranged into an east waiting area, a west waiting area, a south waiting area and a north waiting area, and vehicles can pass through circularly according to the following phase sequence:
phase 1: the south waiting area stops releasing, the east entrance, the north waiting area and the west waiting area release, the variable lane function of the north waiting area is adjusted to 'go straight + turn left', and the variable lane function of the west waiting area is adjusted to 'go straight'; the south entry vehicle enters an east waiting area to wait for passing, and the lane-changing function of the east waiting area is adjusted to 'left turn + straight going';
phase 2: the east import stops releasing, the west waiting area continues releasing, the left-turning vehicle at the east import is ensured to move to the south through the west waiting area, the west waiting area is emptied, and the vehicle is prevented from overflowing; then, releasing the south import, the east waiting area and the north waiting area;
phase 3: the west waiting area stops releasing, the south import area, the east waiting area and the north waiting area continue releasing, and the function of the changeable lane of the north waiting area is adjusted to 'straight driving'; vehicles at the west entrance enter the south waiting area to wait for passing, and the lane-changing function of the south waiting area is adjusted to be 'left-turning + straight-going';
phase 4: the release of the south import is stopped, the release of the north waiting area is continued, the left-turning vehicles at the south import are guaranteed to run to the west through the north waiting area, the north waiting area is emptied, and the vehicles are prevented from overflowing; then, the west entrance, the south waiting area and the east waiting area are released;
phase 5: the north waiting area stops releasing, the west entrance, the south waiting area and the east waiting area continue releasing, wherein the lane function of the east waiting area is adjusted to be 'straight going'; the north-entry vehicle enters a west waiting area to wait for passing, and the function of the variable lane of the west waiting area is adjusted to be 'left-turn + straight-going';
phase 6: the west entrance stops releasing, the east waiting area continues releasing, the left-turning vehicle at the west entrance is ensured to drive to the north through the east waiting area, the east waiting area is emptied, and the vehicle is prevented from overflowing; the north import, the west waiting area and the south waiting area are released;
phase 7: the east waiting area stops releasing, the north import waiting area, the west waiting area and the south waiting area continue releasing, wherein the lane function of the south waiting area is adjusted to be 'straight going'; the east import vehicle enters a north waiting area to wait for passing, and the lane function is adjusted to 'left turn + straight going';
phase 8: the release of the north import is stopped, the release of the south waiting area is continued, the left-turning vehicles at the north import are ensured to pass through the south waiting area and move to the east, the south waiting area is emptied, and the vehicles are prevented from overflowing; and the east import, the north waiting area and the west waiting area are released.
8. The traffic organization method for intersections with wide central median barriers of claim 7 wherein: each inlet of the road intersection is provided with a flow detector, and the division of the number of left-turn lanes and straight lanes in the variable lanes is determined according to the traffic flow detected by the flow detectors.
9. The traffic organization method for intersections with wide central median barriers of claim 8 wherein: the method comprises the following steps of determining green light release time in four directions of an intersection by adopting an HCM (hybrid control method), wherein the release time of partial phase signals meets the following conditions:
(1) phase 1 green time t1Green time t of phase 22And green time t of phase 812The sum of the waiting time and the waiting time can ensure that vehicles in the west waiting area can be emptied or the queuing length of the west waiting area can not overflow the west waiting area;
(2) green time t of phase 23Green time t of phase 34And green time t of phase 45In addition, the vehicles in the north waiting area are emptied as far as possible, or the queuing length of the north waiting area is ensured not to overflow the north waiting area;
(3) green time t of phase 46、Green time t of phase 57And green time t of phase 68In addition, vehicles in the east waiting area are emptied as far as possible, or the queuing length of the east waiting area is ensured not to overflow the east waiting area;
(4) green time t of phase 69Green time t of phase 710And green time t of phase 811The sum of the total weight of the components,the vehicles in the south waiting area are emptied as far as possible, or the shortest queuing length of the waiting area is ensured, and the vehicles do not overflow into the road junction;
(5) when the phase is switched, the interior of the intersection should be ensured to be empty, the central isolation belt is arranged, so that only the intersection space at the diagonal side needs to be cleaned, when the phase 1 is switched to the phase 2, the phase 3 is switched to the phase 4, the phase 5 is switched to the phase 6, the phase 7 is switched to the phase 8, the phase 2 is switched to the phase 3, the phase 4 is switched to the phase 5, the phase 6 is switched to the phase 7, the phase 8 is switched to the phase 1, the phase 6 is switched to the northwest, the phase 8 is switched to the southwest, the emptying duration can be determined according to the road width of the diagonal and the real-time traffic speed of the vehicle detected by the detector, the emptying time t = L/v, wherein the road width of the diagonal is L, and the real-time traffic speed of the vehicle detected by the detector is.
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