CN214245163U - Crossing traffic command system - Google Patents

Abstract

Traffic regulations stipulate: the left-turn vehicles at the crossroad should lead the oncoming straight-going vehicles to go ahead, so as to avoid endless waiting of the left-turn vehicles caused by continuous straight-going vehicles in peak periods and further block the passing of the whole road, and a plurality of crossroads adopt traffic lights to carry out staggered passing on the straight-going lane and the left-turn lane, so that only part of lanes of one road are passed on green lights at any moment, and the crossroads form the bottleneck of road traffic flow. The utility model discloses a crossing traffic guidance system, the vehicle that turns left at the crossing is through turning right in proper order, turn around and guide the red light waiting highway section of specially establishing on horizontal road, turn left the vehicle and turn into the straight going vehicle of horizontal road, make all lanes of green light release road can both last to release, the traffic flow bottleneck at the crossing of road has been eliminated, the long duty ratio of green light of straight going traffic flow has been improved simultaneously, promote the road traffic capacity at the crossing by a wide margin, be favorable to alleviating the confusion that urban road peak crowd brought for city operation and economic development.

Description

Crossing traffic command system

Technical Field

The utility model relates to a highway traffic signal commands technical field, a crossing traffic guidance system.

Background

The traffic passage is divided into two traffic laws, right-side passage (such as inland in china) and left-side passage (such as hong kong in china). The following description is based on right-hand traffic regulations, such as left-hand traffic regulation where the content is to be referred to by left-hand traffic regulations.

Under the right-side traffic regulation, a vehicle about to turn left at an intersection must cross a straight lane in the opposite direction, and for the safety and the order of intersection traffic, the left-turn vehicle is regulated to wait for avoidance and give priority to the passing of the opposite straight vehicle. However, as the traffic flow of roads increases, especially during rush hour, many main roads are continuously driven by straight vehicles during green light release, and in order to avoid endless waiting of left-turn vehicles and congestion of the whole road caused by overstock of left-turn vehicles, staggered release of the straight lanes and the left-turn lanes is often carried out by traffic lights. The results were: in the intersection area where two roads are crossed, only part of lanes of one road are released at any time under the green light. For example, in the case of the bidirectional four-lane shown in fig. 1, when the green lights of the north-south straight lanes are on, only two opposite straight lanes pass through, and the red lights of the two left-turn lanes are off; similarly, when turning green left (see fig. 2), the two lanes in straight line are red-light disabled. That is to say, the road with four bidirectional lanes is equivalently contracted into two bidirectional lanes when arriving at the intersection, and the crossroads form the bottleneck of traffic flow passing during the peak time of road traffic, and become the main root … of the peak normalized congestion of the urban road, especially the central urban road. Although there are continuous efforts in the industry, for example, some intersections are additionally provided with various measures such as left-turn and straight-going vehicle waiting areas to improve the traffic efficiency of the intersections, the key problem of the traffic flow bottleneck at the intersections is not solved all the time.

The inventors of the present application made serial studies on road intersection traffic, for example, a academic paper entitled "yellow light signaling and traffic safety" was published in Shanghai university newspaper (Nature science edition) volume 20, phase 4; meanwhile, deep exploration research is carried out on the solution of the traffic flow bottleneck at the intersection, and the formed final solution becomes the content to be disclosed by the application, so that the aim is to solve the problem of road traffic jam which puzzles urban operation and economic development.

Disclosure of Invention

An object of the utility model is to provide a can eliminate the solution of road traffic flow at the bottleneck problem of intersection to alleviate the key problem that road traffic peak normality that puzzles up of operation in the city and economic development blocked up.

In order to achieve the above object, the crossing traffic guidance system (see fig. 3) of the present invention includes: four crossing branches (10), lane (9), road center median (13), crossing stop line (3), crossing traffic signal lamp, signal lamp controller, its characterized in that: a red light waiting road section (5) of a left-turn vehicle specially used for the left branch road is arranged on at least one lane (9) of at least one branch road (10) driving to the direction of the intersection; the intersection stop line (3) is the starting end of the red light waiting road section, the direction far away from the intersection is the tail end, and a vehicle turning channel (12) of a left-turning vehicle of a left branch road is arranged at the road center isolation belt (13) on the left side of the tail end part of the red light waiting road section.

Above-mentioned the utility model discloses a crossing traffic guidance system, its characterized in that: and a second stop line (4) is arranged, the second stop line (4) is superposed with the tail end line of the red light waiting road section (5), and a corresponding second traffic signal lamp is configured for the second stop line (4).

The second traffic signal lamp is switched from green to red for a few seconds in advance relative to the intersection traffic signal lamp, and the number of seconds in advance is determined by the length of the corresponding red waiting road section (5). The purpose of the advance conversion is to allow the straight-ahead vehicle driving into the red light waiting road section (5) to pass through the intersection before the traffic signal lamp of the intersection turns to the red light, and to reserve a parking position for the left-turning vehicle at the left branch.

The utility model discloses an above-mentioned the utility model discloses a crossing traffic guidance system, on the opposite direction lane of the fork of being provided with red light waiting highway section (5), be along with changeable lane (8) that the intersection traffic signal lamp changes to vehicle turn around passageway (12) district section from the crossing. The variable lane (8) is a straight lane and a turning lane at the green light release time of the vertical turnout, so that left-turning vehicles on the released turnout turn around and right-turning vehicles run straight; the variable lane (8) is a straight lane at the green light release time of the branch road, and the purpose is to prohibit straight vehicles from turning around through the vehicle turning channel (12) to interfere with the passing of reverse vehicles, ensure the passing efficiency of the intersection and eliminate the potential hazards of traffic accidents caused by the turning around.

The utility model discloses a crossing traffic guidance system's the principle of eliminating the current bottleneck of crossing traffic flow: taking the two-way four-lane case shown in fig. 4 as an example, when the intersection lights of the roads in the north and south directions are turned from red lights to green lights to be released, the left side of the two lanes in the one-way direction is a straight exclusive lane, and the right side lane is a three-way common lane for left turning, right turning and straight going, wherein the left-turning vehicle sequentially turns right and turns around to the red light waiting section (5) after driving to the intersection along the right side lane, such as a left-turning driving track (14) of a long vehicle (see fig. 3), while the right-turning vehicle turns right and then goes straight to the east (the vehicle in the opposite direction goes to the west), and the straight-going vehicle continues to go north (the vehicle in the opposite direction goes to the south) through the intersection. It can be seen that as long as the road ahead of the straight-ahead and right-turn vehicles is not blocked, the red light waiting section (5) can accommodate the number of left-turn vehicles within one red light time (if too many left-turn vehicles are driven in during the red light, the parking capacity of the red light waiting section is exceeded, the duration of the red light time can be shortened appropriately), and the bidirectional four-lane traffic flow passing through the intersection can be continued continuously (see fig. 4). That is to say, the number of lanes passing through the intersection area is not reduced, the problem of traffic flow bottleneck at the intersection is eliminated, and compared with the existing left-turn and straight-going lane staggered-time release (see fig. 1 and 2), the road passing efficiency is greatly improved.

The utility model discloses a crossing traffic guidance system's benefit: the method mainly eliminates the traffic flow bottleneck at the intersection, and can effectively relieve the difficulty brought by the urban operation and the economic development due to the road peak congestion; and secondly, because the green light time allocated to the left-turn vehicle to pass is eliminated, the probability of the vehicle encountering the green light when the vehicle passes through the intersection is increased, and the probability of the vehicle passing through the intersection in the aspects of speed reduction, braking, parking, starting, acceleration and other high energy consumption links is reduced, so that the energy is saved, the loss of the vehicle and the road is reduced, and meanwhile, the reduction of the exhaust emission of the vehicle is favorable for the atmospheric environment of the road, and is particularly favorable for the health of traffic police and the like working at the first line of the intersection for a long time.

Drawings

FIG. 1 is a schematic view of traffic flow at an intersection under a condition of green lights of a south-north direction straight lane in a conventional time-sharing release lower two-way four-lane case;

FIG. 2 is a schematic view of traffic flow at an intersection when turning left on a lane green light in the south and north directions in the case of a conventional time-sharing left-off lower bidirectional four-lane case;

fig. 3 is the structure and schematic diagram of the intersection traffic guidance system of the present invention.

FIG. 4 is the schematic diagram of the effect of the two-way four-lane case of the crossing traffic guidance system in the case of green lights in the north and south directions

In the figure:

1. crossroad 2, pedestrian crossing line 3, intersection stop line 4, second stop line

5. Red light waiting road section 6, straight going, left turning and right turning shared lane mark 7, straight going lane mark

8. Variable lane 9, lane 10, fork 11, non-motor lane

12. Vehicle turning channel 13, road center isolation belt 14, left-turning running track of long-body vehicle

15. 16. motor coach

Detailed Description

Fig. 4 shows an embodiment of the present invention, two crossed roads form a crossroad (1) with four branches (10) of east, south, west and north, each of the two directions of each branch has two lanes (9), the left lane is a straight-going dedicated lane, and the right lane is a straight-going, left-turning and right-turning shared lane; the two lanes are both set as a red light waiting road section (5) from the intersection stop line (3) (the specific length can be set according to intersection vehicle statistical data), and the tail end line of the red light waiting road section (5) far away from the intersection is set as a second stop line (4); a second traffic signal lamp is configured for the second stop line; a vehicle turning channel (12) is arranged at the side of the tail end part of the red light waiting road section (5) of the road center isolation belt (13); the second traffic signal lamp is about 3 to 5 seconds ahead of the corresponding intersection traffic signal lamp when the green light is turned to the red light (the specific time duration is determined by the design length of the red light waiting road section), so that a straight-going vehicle entering the red light waiting road section B (5) in the green light period can pass through the intersection, and a space is left for a left-turning vehicle to enter in the red light period; the two reverse lanes are variable lanes (8) switched along with traffic signals at the road junctions between the pedestrian crossing line (2) and the vehicle turning channel (12); the two variable lanes are both straight lanes and U-turn lanes at the same time when the green light is released on the vertical road, so that vehicles with longer bodies (such as buses and the like) can cross the two lanes and turn around through the right variable lane; and the two variable lanes are straight lanes during the green light of the corresponding turnout, so that the vehicle is prohibited from turning around in the vehicle turning-around channel to interfere the passing efficiency of the opposite vehicle, and the potential safety hazard left by the vehicle is eliminated.

Above only the utility model discloses four branches of crossroad are an embodiment of two-way four lanes, and units such as research, planning, design, construction, management of highway and traffic facilities can the utility model discloses on the system characteristic basis that the specification describes, form other implementation cases, if:

the number of lanes at each intersection is other values,

the number of the lanes of each branch road is different from each other,

the number of lanes in two directions of each turnout is not equal;

according to the specific situation such as the difference of a certain direction straight-going vehicle quantity of crossing, can select some switch to use the utility model discloses a system characteristic, all the other switches then adopt current timesharing to let pass, or dodge current …. Therefore, the above embodiments are not intended to limit the scope of the present invention, and the scope of the present invention is defined by the appended claims.

Claims (3)

1. An intersection traffic directing system comprising: four crossing branches (10), lane (9), road center median (13), crossing stop line (3), crossing traffic signal lamp, signal lamp controller, its characterized in that: a red light waiting road section (5) of a left-turn vehicle specially used for the left branch road is arranged on at least one lane of at least one branch road (10) driving to the direction of the intersection; the intersection stop line (3) is the starting end of the red light waiting road section, the direction far away from the intersection is the tail end, and a vehicle turning channel (12) of a left-turn vehicle at the left side of the road center isolation belt (13) at the tail end part of the red light waiting road section is arranged;

and a second stop line (4) is arranged, the second stop line (4) is superposed with the tail end line of the red light waiting road section (5), and a corresponding second traffic signal lamp is configured for the second stop line (4).

2. The intersection traffic directing system of claim 1, wherein: the second traffic signal lamp is converted into the red light a few seconds ahead of the corresponding intersection traffic signal lamp, and the number of seconds ahead is determined by the length of the corresponding red light waiting road section.

3. The intersection traffic directing system of claim 1 or claim 2, wherein: on a reverse lane of a fork road provided with a red light waiting road section (5), a section from the intersection to a vehicle turning channel (12) is a variable lane (8) which changes along with traffic lights of the intersection; the variable lane (8) is a straight lane and a turning lane at the green light release time of the vertical turnout, so that left-turning vehicles on the released turnout turn around and right-turning vehicles run straight; when the green light of the branch road is released, the variable lane (8) is a straight lane, and the straight vehicle is prohibited from turning around.

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