CN104408949B - Public transport priority signal control method based on right-turning vehicles and bus Shared Lane - Google Patents

Abstract

The invention discloses a bus priority signal control method based on right-turning vehicles and buses sharing lanes. At intersections where right-turning is not controlled, the right-turning lane at each entrance road is shared with buses, which is used for right-turning and bus-only lanes. For bus shared lanes, a bus bay platform is established at each entrance road and at a distance from the intersection stop line, and a group of bus platform signal lights are set directly above each bay platform stop; go straight or turn left When the bus arrives at the harbor-style platform, if the signal light on the corresponding bus platform shows a green light, the bus does not need to wait to turn right and enter the intersection directly through the bus-shared lane; if the bus-only signal light shows a red light, the bus needs to enter Wait first in the harbor-style platform; use the right-turn lane to achieve bus priority on the premise that there is no need for a dedicated entrance lane for buses and the normal driving of other motor vehicles is not affected.

Description

Bus priority signal control method based on right-turning vehicles and buses sharing lane

technical field

The invention belongs to the field of urban road traffic signal control, relates to intersection signal timing, in particular to a control method for giving priority to buses at intersections where right-turning vehicles are not controlled.

Background technique

In view of the rapid increase of the number of motor vehicles in cities, environmental pollution and traffic jams, a method of bus priority is proposed, mainly to open bus lanes reasonably. Existing bus-only lanes can solve the problem of saving bus queuing time and improve bus traffic efficiency. However, bus-only lanes can improve bus traffic efficiency in non-intersection sections. The road will reduce the traffic capacity of the intersection and aggravate traffic congestion, so there is no bus lane at the intersection, that is, the bus still needs to queue up, there is no signal priority, and the real bus priority has not been realized.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a right-turning vehicle based on a right-turning vehicle in which the bus can realize public transportation priority under the condition that the normal running of the right-turning vehicle is not affected at a signalized intersection where the right-turning vehicle is not controlled. A bus priority signal control method for sharing lanes with buses.

For realizing this purpose, the technical scheme that the present invention adopts has the following steps:

(1) At the intersection where the right turn is not controlled, the right turn lane at each entrance lane is shared with buses, and it is a right turn and bus shared lane, at each entrance lane and at a certain distance from the stop line at the intersection Set up a bus platform at the harbor-style platform, and set up a group of bus platform signal lights directly above each harbor-style platform stop; (2) When a bus going straight or turning left arrives at the harbor-style platform, if the corresponding bus platform If the signal light shows a green light, the bus will enter the intersection directly through the right turn and the bus shared lane without waiting. If the special signal light for the bus shows a red light, the bus needs to drive into the harbor platform and wait first. When the special signal light for the bus turns green Then drive out of the platform, turn right and enter the intersection from the bus-sharing lane; (3) When the bus entering the intersection from the right-turning and bus-sharing lane reaches the stop line at the intersection entrance, the main signal light will display green light, and the bus will Go straight or turn left with vehicles in the straight or left turn lane.

Further, the phase difference between the green light phase of the bus stop signal light and the green light phase of the main signal , is the distance between the bus bay platform and the stop line, unit: m; is the speed of the bus passing the right turn and the bus shared lane, unit: m/s; It is safe time, take 3s.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention sets right-turn vehicles and bus shared lanes at the intersection entrance where right-turn is not controlled, because the traffic volume of right-turn lanes is small, bus-only lanes and right-turn lanes can be shared; at the intersection upstream Set deep harbor-style bus stops and bus stop signal lights, and reasonably set the phase difference between the main signal lights and bus stop signal lights, so that when the bus leaving the harbor-style platform passes the right-turn lane and arrives at the intersection when the bus stop signal light is green, the main signal lights are just right. It is a green light for going straight (turn left). The bus can pass through the intersection through the straight (turn left) lane and the vehicles lined up for straight (turn left) without affecting the normal passage of right-turn vehicles. If there is no need for a dedicated entrance lane for buses And under the premise of not affecting the normal driving of other motor vehicles, use the right-turn lane to achieve bus priority.

2. After the left-turning and straight-going buses leave the platform, the present invention does not need to change lanes multiple times to pass through the intersection, which is convenient for the driver to operate and improves the traffic safety of the intersection.

3. At the intersection, the bus only needs to wait at the platform once, and does not need to stop at the stop line twice, which not only reduces vehicle wear and tear, reduces bus exhaust emissions, but also improves passenger comfort.

Description of drawings

Fig. 1 is the arrangement diagram of the right-turn vehicle and the bus shared lane and bus stop signal lights at the intersection;

Fig. 2 is the flow chart of the bus priority signal control method based on right-turn vehicles and bus shared lanes in the present invention;

Figure 3 is a four-phase control diagram adopted at the intersection;

Figure 4 is a phase setting diagram of the main signal and the bus stop signal.

In the figure: 1. Main signal light; 3, 8, 13, 18. Right turn and bus shared lane; 2, 7, 12, 17. Intersection stop line; 5, 10, 15, 20. Bus harbor platform ; 4, 9, 14, 19. Signal lights; 6, 11, 16, 21. Buses.

detailed description

As shown in FIG. 1 , the intersection road is divided into four intersections, namely, an N (north) intersection, an S (south) intersection, a W (west) intersection, and an E (east) intersection.

The signal light in the middle of the intersection is the main signal light 1. The right-turn lanes at each intersection entrance at the intersection are right-turn and bus-sharing lanes 3, 8, 13, and 18, that is, bus-only lanes and right-turn lanes are shared, and buses that go straight or turn left and turn right Motor vehicle driving. Build a bus bay platform with a depth of 3.5m at the entrance of each intersection at the intersection and at a distance from the intersection stop line, and set a set of signal lights directly above each bay platform stop , known as bus stop signal lights, are used to control straight-going and left-turning buses to leave the platform. Specifically: at the intersection entrance road in the N direction, the distance from the intersection stop line 2 to the L _N position is to establish a bus harbor platform 5 with a depth of 3.5m, and the bus 6 stops at the harbor platform 5, and at the harbor platform 5 A group of signal lights 4 are set up directly above the station to control the straight-going and left-turning buses 6 to leave the platform; the distance from the intersection stop line 7 to the _E direction intersection is to set up a bus with a depth of 3.5m. Harbor-style platform 10, bus 11 stops at the harbor-style platform 10, a group of signal lights 9 are set directly above the harbor-style platform 10, used to control the straight-going and left-turning buses 11 to leave the platform; S direction intersection entrance road Set up a bus harbor platform 15 with a depth (width direction of the lane) of 3.5m at the position L _S from the stop line 12 at the intersection, and the bus 16 stops at the harbor platform 15. A group of signal lights 14 are arranged above to control the straight-going and left-turning buses 16 to leave the platform; the distance from the intersection entrance to the W direction to the intersection stop line 17 is the L _W position to establish a bus harbor with a depth of 3.5m Platform 20, bus 21 is parked at harbor-style platform 20 places, and a group of signal lights 19 are set directly above harbor-style platform 20, and the bus 21 that is used to control going straight and turning left leaves the platform. When the signal light on the platform is red, the bus stops in the harbor platform and waits. When the signal light on the platform is green, the bus can pass in the right-turn lane.

For buses that need to go straight or turn left, if the corresponding signal lights 4, 9, 14, and 19 show green lights when they arrive at bay-style platforms 5, 10, 15, and 20, the bus can pass right-turn and turn-left without waiting. Bus shared lanes 3, 8, 13, 18 enter the intersection. If the bus arrives at the harbor-style platform, the bus special signal lights 4, 9, 14, and 19 show red lights, then the bus needs to drive into the harbor-style platform and wait. The car drives out of the platform, turns right and enters the intersection with bus shared lanes 3, 8, 13, and 18. In addition, by reasonably setting the phase difference between the main signal and the platform signal, when the bus entering the intersection from the right turn and bus shared lane 3, 8, 13, 18 arrives at the intersection entrance stop line 2, 7, 12, 17 , the main signal light 1 shows a green light, so that the bus can go straight or turn left together with the car on the straight or left turn lane, without secondary waiting. For the bus that needs to turn right, it is not controlled by the signal lights on the platform, and it enters the intersection from the right-turn lane the same as other right-turn motor vehicles.

Referring to Figure 3, four-phase control is adopted at the intersection, that is, north-south (SN) straight-going phase control, north-south (SN) left-turn phase control, east-west (EW) straight-go control and east-west (EW) left-turn phase control. The traffic flow in the north-south straight phase includes: north-south straight motor vehicles; the north-south left-turn phase traffic flow includes: north-south left-turn motor vehicles; the east-west straight traffic phase includes: east-west straight motor vehicles; the east-west left-turn phase traffic flow includes: East and west turn left motor vehicle.

Refer to the phase setting of the main signal and bus stop signal in Figure 4, gray indicates green light, white indicates yellow light, and black indicates red light. In order to avoid the secondary parking of the bus and eliminate the impact on the traffic of right-turning vehicles, it is necessary to set the phase difference between the main signal and the bus stop signal. The straight-going motor vehicles at the east (E), west (W), south (S), and north (N) entrances of the intersection pass through the corresponding right turns and the speeds of bus shared lanes 3, 8, 13, and 18 are V respectively. _E , V _W , V _S , V _N ; the distance between the east entrance parking line 6 and the bus bay platform 10 is L _E , the distance between the west entrance parking line 17 and the bus bay platform 20 is L _W , and the south The distance between the entrance parking line 12 and the bus bay platform 15 is L _S , and the distance between the north entrance parking line 2 and the bus bay platform 5 is L _N . The cycle and green light time of each bus stop signal light 4,9,14,19 and main signal light 1 are identical, and the green light of each bus stop platform signal light 4,9,14,19 starts earlier than the green light of main signal light 1 and ends in advance.

The phase difference between the green light phase of the bus stop signal light and the green light phase of the main signal 1 for: ,in, is the distance between the bus bay platform and the stop line, unit: m; is the speed of the imported bus passing the right turn and the bus shared lane, unit: m/s, to ensure that the main signal shows green light when the bus arrives at the intersection through the right turn and the bus shared lane; is a safe time, usually 3 seconds (s). The specific phase difference is as follows:

The phase difference between the green light phase of signal light 19 at the west entrance bus stop and the east-west green light phase of main signal 1 (the green light of the bus stop signal is earlier than the green light of the main signal) is:

,

Then the phase difference between the green light phase of signal light 9 at the east entrance bus stop and the east-west green light phase of main signal 1 (the green light of the bus stop signal is earlier than the green light of the main signal) is:

,

Then the phase difference between the green light phase of the signal light 4 at the north entrance bus stop and the north-south green light phase of the main signal 1 (the green light of the bus stop signal is earlier than the green light of the main signal) is:

,

Then the phase difference between the green light phase of the bus stop signal light 14 at the south exit and the north-south green light phase of the main signal 1 (the bus stop signal green light is earlier than the main signal green light) is:

.

Claims (4)

1. a public transport priority signal control method based on right-turning vehicles and bus Shared Lane, is characterized in that having following Step:

(1) at uncontrolled cross junction of turning right, right-turn lane and public transport at each entrance driveway are special shared, for the right side Turn and public transport Shared Lane, at each entrance driveway and at distance intersection parking line one segment distance, set up a bus bay Formula platform, is respectively provided with one group of bus platform signal lamp in the surface of each bay type multi-storied platform anchor point；

(2) keep straight on or the bus that turns left is when arriving bay type multi-storied platform, if the bus platform traffic light system green light of correspondence, then Bus is without waiting for directly by turning right and public transport Shared Lane entrance crossing, if public transport special signal lamp shows red light, Then bus first waits in need to sailing bay type multi-storied platform into, rolls platform again away from when public transport special signal lamp becomes green light, by turning right Crossing is sailed into public transport Shared Lane；

(3) when entering the bus of crossing at arrival crossing inlet stop line from turning right with public transport Shared Lane, main letter Signal lamp display green light, bus is kept straight on together with the car in craspedodrome or left changing lane or turns left；

Phase difference between green light phase place and the green light phase place of main signal of bus platform signal lamp,It is public transport Distance between bay type multi-storied platform and stop line, unit: m；It is that bus passes through to turn right and the speed of public transport Shared Lane, single Position: m/ s；It is safety time, takes 3s.

Public transport priority signal control method based on right-turning vehicles and bus Shared Lane the most according to claim 1, its Feature is: in step (3), bus platform signal is identical with the main signal cycle, and green time is identical.

Public transport priority signal control method based on right-turning vehicles and bus Shared Lane the most according to claim 1, its Feature is: in step (3), and the bus of right-hand rotation is not controlled by public transport special signal lamp and main signal light, directly from turn right and Public transport Shared Lane is turned right after entering crossing.

Public transport priority signal control method based on right-turning vehicles and bus Shared Lane the most according to claim 1, its Feature is: the degree of depth of the bus bay type multi-storied platform in step (1) is 3.5m.