WO2013006994A1

WO2013006994A1 - Anti-congestion system and method for scheduling road traffic

Info

Publication number: WO2013006994A1
Application number: PCT/CN2011/001502
Authority: WO
Inventors: 王云虎
Original assignee: Wang Yunhu
Priority date: 2011-07-13
Filing date: 2011-09-05
Publication date: 2013-01-17
Also published as: CN102354446A

Abstract

Disclosed is an anti-congestion system and method for scheduling road traffic, relating to the field of road traffic. The anti-congestion system for scheduling road traffic designs an intersection as a stepped intersection and provides a plurality of multiple U-turn lanes (2) outside the centre region of the intersection, the multiple U-turn lanes (2) comprising multiple U-turn lanes before the intersection (9), multiple U-turn lanes on the right side of the intersection (10), and multiple U-turn lanes after the intersection (11), the multiple U-turn lanes before the intersection (9) being provided on the right side thereof with a through waiting lane (4), through flow lanes (5) and a right-turn transfer lane (6). The anti-congestion system and method for scheduling road traffic enables through traffic in all directions of the intersection to be kept flowing at the intersection, by means of a rational scheduling of the length of the roads and a rational configuration of the traffic lights at the intersection. This relieves the traffic pressure greatly and allows smoother driving for automobiles on the roads.

Description

A road traffic planning anti-blocking system and anti-blocking method.

(1) Technical field

The invention relates to the field of road traffic, in particular to a road traffic planning anti-blocking system and an anti-blocking method.

(2) Background technology

At present, the problem of urban traffic jams caused by the lack of road traffic planning has become increasingly serious, and it has become the biggest problem in major cities around the world. For example, how much distance between the road and the road is more suitable, how to plan the width of the intersection, how much the speed of the car can be smoother, how to set the traffic lights in all directions of the intersection, and so on. The traffic jam problem can be divided into saturated traffic jam and unsaturated traffic jam. The saturated traffic jam means that the vehicle on the road is too saturated and the road is seriously blocked. The unsaturated traffic jam means that the vehicle is not too large. It has not reached saturation and is still stuck in traffic. Non-saturated traffic jams are actually traffic jams at intersections. Sometimes traffic jams on the roads are caused by traffic jams at the intersections. The reason is that there are only traffic in both directions. The vehicles can travel all day, and the intersections are the convergence points of traffic in many directions. It is like the bottleneck of a bottle, which tightly catches the smooth flow of the vehicle. So how to break this bottleneck and realize the road. Unblocked? At present, we usually use two methods: one is to widen the road, but the blind widening of the road can not effectively solve the traffic jam at the intersection. There are often fewer vehicles on the road, and the traffic is still blocked at the intersection, and it takes up a lot of land and increases a lot. The cost of road construction; another common method is to repair the bridge and build the elevated road, the effect is better, but the cost is too high, and the traffic jam is generally serious near the exit and the entrance of the viaduct.

(3) Invention content

In order to make up for the defects of the prior art, the present invention provides a road traffic planning anti-blocking system and an anti-blocking method for making an intersection vehicle run smoothly.

The invention is achieved by the following technical solutions:

A road traffic planning anti-blocking system, characterized in that: the intersection is designed as a stepped intersection, and a plurality of multi-u-shaped return lanes are arranged outside the center of the intersection, and the right side of the multi-u-shaped return lane in front of the mouth is sequentially arranged There are straight waiting lanes, straight running lanes and right turn transition lanes. Straight-line vehicles in red light need to wait in a straight lane waiting for lanes, and these vehicles are prohibited from occupying straight-through running lanes.

The road traffic planning anti-blocking system, the multiple U-shaped returning lane is to widen the existing returning intersection to 10-100 meters, and draw a number of U-shaped turning vehicles in a dotted line, so that several The car is turning back at the same time. In a very short time, it can pass a large number of vehicles, including multiple U-shaped back lanes in front of the mouth, multiple U-shaped back lanes in the mouth and multiple U-shaped back lanes in the mouth; The transitional lane includes the pre-turn transition lane, the middle-turn transition lane and the post-transition transition vehicle replacement page (Article 26) Road. There is a left-to-left turn transition lane behind the intersection, which is reserved for left-to-left vehicles. The straight-through vehicles are forbidden to occupy. The left-to-left turn-only lane, the left-to-left vehicle and the straight-going vehicle travel in the same green time. The length of the merged transition lane between any two lanes is 8-12 meters, and the trajectory of the parallel vehicles is a three-fold line. The beginning of the parallel transition lane has double solid lines, and the left side to the right side is merged with the right side. The situation is similar to the left side. The left-to-left turn transition lane, the parallel transition lane and the right-turn transition lane avoid the collision between the turning vehicle and the straight-going vehicle, and can travel smoothly in the same green time.

An anti-blocking method for the above-mentioned road traffic planning anti-blocking system, which is characterized by: planning road intersections, the specific methods are as follows:

1 Increase the road area of the intersection and increase the number of intersections. The relationship between the number N of lanes after the intersection expansion and the number of lanes of the road is: N n+3, the meaning of "3" is the three lanes added by the intersection, respectively For the front or back lane, the left lane, the straight lane and the right lane;

2 Plan the transit time of traffic flow and pedestrian flow on each lane of the intersection;

3 Run straight on the straight-through vehicles at the intersection. ,

The road traffic planning anti-blocking method, the planning of the traffic flow of the traffic flow and the pedestrian flow in each lane of the intersection includes two steps of turning the left turn method, the two-step round-trip straight method, and the slow-track vehicle two steps back to the left side of the traffic flow at the intersection Turning the law, the pedestrian flow at the intersection is carried out by a two-step pedestrian crossing method. The two-step roundabout method is completed in two steps for the left traffic flow. The first step is to cross the intersection with the straight traffic flow, and the second step is to cross the intersection and follow the multiple U-shaped return lane to turn back. There are three signal lights in front of the intersection, at the intersection and at the intersection. The first signal light is set up to avoid the conflict between the straight-through vehicle and the reverse-back vehicle. The second signal light is to avoid the straight-going vehicle and the left direction. Or the right-handed vehicle is set up in conflict, the third heavy signal only limits the vehicle to the original return; the two-step round-trip method is completed in two steps for the straight traffic, the first step is to turn right, the second step, the second step Pass the right U-shaped back lane and then turn right; the slow-track vehicle two-step back-to-left turn method is left-turning and slow-moving in two steps. The first step is synchronized with the straight-direction signal, the second step and the right Synchronizing to the straight line signal; the pedestrian two-step sectioning method adds a central safety island in the middle of the road, and the pedestrian crosses the road in two steps. The running of the water is designed for the green light of each intersection, so that the green light of the straight-through vehicles at the adjacent intersections is gradually opened, so that the straight-going vehicles driving in the straight-flowing waterway are traveling at a constant speed to the next intersection, all of which are green lights, and the straight-through vehicles are in various directions. There is no need to stay at the intersection to reach continuous driving. The running water includes various methods of flowing water lengths of lt, lt-2t, 2t and more than 2t, respectively, and the vehicles on the main road and the secondary road respectively flow at different speeds, and the method of queuing including running water And the odd method, the time-to-distance method between the intersections of all the main roads of the main road is an even multiple of t, and the vertical and horizontal straight intersections of the intersections are realized, and the maximum transit time of the straight-through vehicles in all directions is realized; The odd distance is the main road. The distance between the main intersections and the main intersection is t. Replacement page (Article 26) An odd number of times, this position is called the singularity. This position is the best position to set the two-way turn. In this position, the vehicle can be turned back in the shortest waiting time, and when the straight running time is 21, it is odd. The returning vehicle in both directions can be directly turned back without waiting during the entire running time. The running of the water includes a circular multi-level public transportation system on the main road and the secondary road, and the circular multi-level public transportation system divides the city into a plurality of areas by using the vertical and horizontal main roads of the city as an edge line, and divides the public transportation vehicles into multiple Level system, the first-class big bus runs on the main road, take the big circular route, only straight and right turn, no left turn; the second-class small bus travels in each area, also takes the circular route, and only goes straight and Turn right and design the number and size of small buses according to the size of the area.

The beneficial effects of the invention are: the road traffic planning anti-blocking system and the anti-blocking method, through the reasonable planning of the length of the road, through the reasonable setting of the traffic lights at the intersection, the straight traffic flow in all directions of the intersection can reach the running water at the intersection The state has greatly eased the traffic pressure and made the vehicles on the road more smooth.

(iv) Description of the rain

The invention will now be further described with reference to the accompanying drawings.

1 is a schematic structural view of a stepped intersection of the present invention.

2 is a schematic structural view of a multiple U-shaped returning lane of the present invention.

3 is a schematic structural view of a right turn transition lane of the present invention.

4 is a schematic structural view of a merged transition lane of the present invention.

FIG. 5 is a schematic structural view of a two-step roundabout method according to the present invention.

Figure 6 is a schematic structural view of the two-step round-trip straight method of the present invention.

7 is a schematic structural view of a two-step roundabout method of a slow-track vehicle according to the present invention.

FIG. 8 is a schematic structural view of a two-step segmented walking method of a pedestrian according to the present invention.

Figure 9 is a schematic view of the basic scheme 1 of running water running according to the present invention.

Figure 10 is a schematic view of the basic scheme 2 of running water running according to the present invention.

Figure 1 is a schematic view of the flow running extension scheme 1 of the present invention.

Figure 12 is a schematic view of the flow running extension scheme 2 of the present invention.

Figure 13 is a schematic view of the flow running extension scheme 3 of the present invention.

Figure 14 is a schematic view of a specific embodiment of a running water travel extension scheme 3 of the present invention.

Figure 15 is a schematic view of the integrated running solution 1 of the present invention.

Figure 16 is a schematic view of the integrated running solution 2 of the present invention.

Figure 17 is a schematic view of a circular multi-stage bus system of the present invention.

FIG. 18 is a schematic structural view of an intersection traffic flow combination scheme according to the present invention. Replacement page (Article 26) Figure 19 is a schematic view showing the structure of the node a in Figure 9 of the present invention.

Figure 20 is a schematic structural view of a node segment of Figure 10 of the present invention.

Figure 21 is a schematic view showing the structure of a node b in Figure 10 of the present invention.

Figure 22 is a schematic view showing the structure of a node c in Figure 10 of the present invention.

Figure 23 is a schematic view showing the structure of a node d in Figure 10 of the present invention.

Figure 24 is a schematic structural view of a node e in Figure 10 of the present invention.

Figure 25 is a block diagram showing the structure of the node f in Figure 10 of the present invention.

Figure 26 is a schematic view showing the structure of a node g in Figure 10 of the present invention.

Figure 27 is a schematic view showing the structure of a node h in Figure 10 of the present invention.

Figure 28 is a schematic structural view of a node i in Figure 10 of the present invention.

Figure 29 is a block diagram showing the structure of the node j of Figure 10 of the present invention.

Figure 30 is a block diagram showing the structure of node k in Figure 10 of the present invention.

Figure 31 is a schematic view showing the structure of a node m in Figure 13 of the present invention.

Figure 32 is a block diagram showing the structure of the node n in Figure 14 of the present invention.

Figure 33 is a block diagram showing the structure of the node p in Figure 18 of the present invention. '

Figure 34 is a block diagram showing the structure of the node q in Figure 16 of the present invention.

In the picture, 1 pedestrian zebra crossing, 2 multiple U-shaped return lanes, 4 straight waiting lanes, 5 straight running lanes, 6 right turn transition lanes, 7 left turn left dedicated transition lanes, 8 left turn left vehicle trajectory, 9-port multiple U-shaped return lanes, 10 right multi-U-shaped return lanes, 11 post-multiple U-shaped return lanes, 12 two-step round-trip straight vehicle trajectory, 13-turn front transition lanes, 14-turn intermediate transition lanes , 15 turn-by-turn transition lanes, 16-way transitional lanes, 17 green belts, 18 straight forward traffic lights, 19 main intersection traffic lights, 20 multi-shaped U-turn signals behind the mouth, 21 reverse front straight traffic lights , 22 reverse intersection signal lights, 23 reverse port multiple U-turn signal lights, 24 left-direction straight traffic lights, 25 two-step round-trip signal lights, 26 right-direction straight line front lights, 27 left-way rear multiple U-shaped back Turn signal lights, 28 first to pedestrians walking signal lights, 29 second to pedestrians walking signal lights, 30 first to pedestrians walking signal lights, 31 second reverse pedestrians walking signal lights, 32 central safety islands, 3 3 tri-fold line, 34 pairs of solid line, 35 left-direction vehicle straight-line signal, 36 right-direction vehicle straight-line signal, 37 multi-shaped U-turn signal lights in front of the mouth, 38 multiple U-shaped turn signals in front of the reverse port.

(5) Specific implementation methods

The drawings are a specific embodiment of the invention. The road traffic planning anti-blocking system is characterized in that: the intersection is designed as a stepped intersection, and a plurality of multiple U-shaped return lanes 2 are arranged outside the center of the intersection, and the multiple U-shaped back replacement page in front of the mouth (Detail 26 article) On the right side of the lane 9, there are a straight waiting lane 4, a straight running lane 5 and a right turning transition lane 6. The multiple U-shaped return lane 2 is to widen the existing returning pass to 10-100 meters, including multiple U-shaped return lanes in front of the mouth 9, multiple right U-shaped return lanes 10' and multiple post-mouth The U-turn lane 11; the right-turn transition lane 6 includes a foreturn transition lane 13, a mid-turn transition lane 14, and a trailing transition lane 15. There is a left-to-left turn transition lane 7 behind the intersection, and the left-to-left vehicle shares the same green time period with the straight-through vehicle. The length of the merged transition lane 16 between any two lanes is 8 - 12 meters, and the two sides of the merged lane 16 are green belts 17, and the trajectory of the parallel vehicles is a three-fold line 33, and the beginning of the parallel transition lane 16 is set. There are double solid lines 34.

The anti-blocking method for applying the above-mentioned road traffic planning anti-blocking system is characterized in that: the road intersection is planned, and the specific method is as follows:

1 Increase the road area of the intersection and increase the number of intersections. The relationship between the number of lanes N after the intersection expansion and the number of lanes on the road is: N n+3 ;

2 Plan the passage time of traffic flow and pedestrian flow on each lane of the intersection;

3 Straight traffic to the intersection is carried out. .

The road traffic planning anti-blocking system and the anti-blocking method, the planning of the traffic flow of the traffic flow and the pedestrian flow in each lane of the intersection includes a two-step roundabout method, a two-step round-trip method, and a slow-track vehicle for the traffic flow at the intersection In the second step, the left-turn method is used to implement the pedestrian two-step segmentation method for the pedestrian flow at the intersection. The two-step round-trip method is completed in two steps for the left-hand traffic flow. The first step is to cross the intersection with the straight traffic flow, and the second step is to cross the intersection and follow the multiple U-shaped return lane 2 to turn back. A triple signal light is arranged in front of the intersection, in the intersection and after the intersection; the two-step round-trip straight method is completed by two steps of two-step round-trip vehicle travel trajectory in two steps, the first step is first right turn, the second step is passed Right multi-U-shaped back lane 10 and then right turn; the slow-track vehicle two-step back-to-left turn method is left-turning slow-moving in two steps, the first step is synchronized with the straight-direction signal, the second step and the right direction Straight line signal synchronization; the pedestrian two-step sectioning method adds a central safety island 32 in the middle of the road, and the pedestrian crosses the road in two steps. The running of the water is designed for the green light of each intersection, so that the green light of the straight traffic of the adjacent intersection is gradually opened, so that the straight traveling vehicle traveling in the straight running lane 5 is driven at a constant speed to the next intersection, and the green light is in the straight line. There is no need to stay at each intersection to achieve continuous driving. The running water includes various methods of flowing water lengths of U, It-2t, 2t and more than 2t, respectively, and the vehicles on the main road and the secondary trunk road respectively flow at different speeds, and the method of queuing including running water And the odd method, the time-to-distance method between the all-fishing crossroads of the main road is an even multiple of t, realizing the vertical and horizontal straight-cut intersections of the intersections, and realizing the maximum transit time of the straight-through vehicles in all directions; The odd method is the main road. The distance between the main intersections and the main intersection is an odd multiple of t. This position is called the singularity. This position is the best position for setting the two-way turning. In this position, the vehicle can be turned back. Turn back in the shortest waiting time, and when the straight running time is 2t, replace the page at the singularity (Article 26) The reversing vehicle in both the forward and reverse directions can be directly turned back without waiting during the entire running time. The running of the water includes a circular multi-level public transportation system on the main road and the secondary road, and the circular multi-level public transportation system divides the city into a plurality of areas by using the vertical and horizontal main roads of the city as an edge line, and divides the public transportation vehicles into multiple Level system, the first-class big bus runs on the main thousand roads, take the big circular route, only straight and right turn, no left turn; the second-class small bus travels in each area, also takes the circular route, and also only goes straight and Turn right and design the number and size of small buses according to the size of the area.

The road traffic planning anti-blocking system and anti-blocking method, as shown in Figure 5, the two-step back-turning method is completed in two steps. The first step is to go straight ahead to the signal light 18 and the main road signal light 19 green light, first cross At the intersection, wait for the multi-shaped U-turn signal light 20 after the main port, and after the second direction, the multi-shaped U-turn signal light 20 green light and then pass through the port and then multi-shaped U-turn lane 11 and then proceed Turn right, at this time, the straight forward signal light 21 and the reverse intersection signal light 22 are turned red. The first straight forward traffic light 18 is set up to avoid a collision between the straight-through vehicle and the reverse-back vehicle after the reverse port; the second-way traffic light 19 is to avoid the straight-going vehicle and the left or right. The vehicle is set up in conflict with the traveling vehicle; the third multi-shaped U-turn signal light 20 is limited to the original vehicle, and the original vehicle is unrestricted. On the contrary, the reverse port front straight signal lamp 21, the reverse intersection signal lamp 22, and the reverse port rear multiple U-shaped return signal lamp 23 also function. As shown in Fig. 6, the first step of the two-step round-trip straight method is to turn right and turn right, and merge with the multi-shaped U-turn vehicle behind the left-facing port, waiting for the green light signal of the multi-shaped U-turn signal lamp 27 after the left-facing port. At this time, the two steps back to the straight line light 25 green light, and the left straight line signal 24 red light; the second step after the left side of the multiple U-shaped turn signal 27 green light, through the right multi-shaped U-shaped turn lane 10, then turn right, at this time the right straight line front light 26 is red. The two-step round-trip signal light 25 is a traffic light dedicated to the two-step round-trip vehicle. The green light is set to avoid the running time of the left-handed vehicle and leave enough time for the left to go straight. The running water of the vehicle. As shown in Fig. 7, the first step of the slow-track vehicle in the second step of the left-turning method is synchronized with the straight-direction signal, from the A position to the B position, and then the B position waits for the right-direction straight-line signal, and the second step is to turn the right-direction straight line light. After that, the express train with the rightward straight line is synchronized from the B position to the C position, and the left turn is completed. The one-step process is broken down into two steps, avoiding accidents and conflicts, and has no effect on the straight traffic. As shown in Fig. 8, the first step of the pedestrian two-step segmenting method, the first pedestrian pedestrian traffic light 28 on the pedestrian safety island 32 or the first reverse pedestrian traffic light 30 green light starts after the pedestrian zebra crossing 1 line to the center The safety island 32 waits, when the first pedestrian traffic light 28 lights up green, the left vehicle straight traffic light 35 just lights up red, and when the first reverse pedestrian traffic light 30 lights up green, the right vehicle straight traffic light 36 just lights up. Red light; the second step, when the second pedestrian walks through the signal light 29 or the second reverse pedestrian travel signal 31 green light, the pedestrian is from the center safe island 32 to the opposite side of the road, where the second pedestrian crossing signal light 29 lights up green The leftward vehicle straight traffic light 35 lights red, and the second reverse pedestrian traffic light 31 lights green, and the rightward traffic light 36 lights red. Replacement page (Article 26) The road traffic planning anti-blocking system and the anti-blocking method implement running water to the straight-through vehicles at the intersection, and the specific implementation scheme is as follows:

First, let's talk about a few definitions and rules:

1. Green light cycle: After all the traffic flows are combined at one intersection, the sum of the green time of all the combined cycle is defined as the green cycle. In this study, we set the green cycle of the intersection to 4t, t we define The basic time unit of the invention. The green light cycle has three characteristics, one is cyclical, repeating from 0t-4t, every 4t, and reciprocating. The second is uniqueness. A city is a whole. We want to plan the traffic lights at all intersections in this city. We stipulate that the green cycle with any traffic light intersection is 4t. The third is variability. The green light cycle period 4t is associated with the running speed. It is corresponding and variable, that is, the running speed V 1 X 4U = running speed V2 X 4t2, ie V l X tl=V2 X t2, Here, t1 and t2 are respectively two basic time units corresponding to V l and V2.

2. Green light period: The passage time period from the start time to the end time of the green light of one combination or one cycle of the vehicle flow. We call this combination or the green time period of this traffic flow. The length of the green light period is called the green light duration. The green light duration is only a length of time regardless of the start and end, and the green light period has both the length of time and the start and end moments.

3. Running time: Straight-line vehicles running in water The green light starts and ends at each intersection. The green light starts and ends at the next intersection. The green light period of the running water is also called the intersection time. The running time is not only at the intersection. Yes, there is a flow period at any position of the entire road. Similarly, the length of the running time is called the running time, and the time outside the straight running time is called the idle time of the straight-through vehicle.

4. Time Distance: The time taken by the vehicle to flow at a constant speed from a junction to the next intersection. We call the time distance between the two intersections.

Distance: In order to distinguish from the time distance, we call the actual distance between the two intersections as the distance of travel. It is obvious that the distance is equal to the speed of the water V multiplied by the time distance.

5. The complementary principle of intersection area and transit time. The number of intersections and the green light transit time of vehicles can compensate each other. If one party cannot adjust, we can increase the other party to meet the purpose of vehicle traffic.

(1) Basic plan 1: The time distance between adjacent intersections is I t , and the running time of straight vehicles is l t.

As shown in Figure 9 in order to solve the problem of straight-through vehicles running in all directions, we start with the simplest and most basic. We stipulate that each road is parallel or vertical, and the distance between all adjacent intersections is lt, each There are 8 traffic flows at the intersection for the direct traffic in 4 directions and the left traffic in 4 directions. We set the straight traffic and the left traffic flow in each direction as a combination. We use symbols to indicate the combination of the straight and the left. . Four combinations of these four directions, replacement page (Article 26) They are -::. At the same time, we stipulate that each combination occupies an equal transit time, that is, the green light of ~^ =it

4

Time, the actual green time periods occupied by the four combinations are Ot - It, lt~2t, 2t~3t, 3t^0t (4t), 0t (4t) ^lt (5t) , It (5t) ~2t (6t )... After 4t, it starts to cycle from Ot, and 4t is a cycle. According to the above regulations, we draw the basic graphics of the straight-through vehicles in all directions.

1

The line in the figure represents the road, and the intersection of the two lines is the intersection. In the figure, we also call the node. ^ means reverse straight 厶

The green light period with the left turn is It- 2t, and the meaning of 1 is that the green light starts at lt. ? The green time period indicating the leftward and leftward turns is 2t-3t, and the meaning of 2 is that the green light starts at 2t. The green time period indicating the rightward straight line and the left turn is 3t- 0t, and the meaning of 3 is that the green light start time is St o ^^, indicating that the green light start time of the straight line and the left turn is Ot, and the green light period is 0t-lt. The number "1" on the line between the nodes indicates that the time distance between the intersections is lt. It can be seen from the node graph that when the normal direction is 0, the reverse direction is set to 1, and the other two directions must be 2 and 3 respectively; when the original direction is 2, the reverse direction must be 3, and the other two directions are They are 0 and 1, respectively.

For any running road, the sum of the green lights at the beginning and the end of each intersection on the entire road is two fixed values. The relationship between these two fixed values: Suppose one is a and the other is a+ 4 (when a<4) or a-4 (when a>4) This is called the node theorem. For example: Please see the bottom left corner node a of Figure 9 as shown in Figure 19.

(1) The sum of the inversion direction and the start time of the reverse green light is 0+1 = 1, then the sum of the intrinsic direction and the reverse green light start time of each intersection along the entire direction in the normal direction or the reverse direction For 1 or 1+4 = 5, please see the figure. The sum of the intersections along the normal direction is: first 0+1=1, second 1 +0 = 1, third 2+3 = 5, the fourth 3+2 = 5, ...

(2) The sum of the start time of the left and right green lights is 2+3 = 5, then the intersection of the two directions in the left and right directions is 5 or 5 - 4 = 1 . Please see the picture: The sum of the intersections from left to right is: first 2+3 = 5, second 3+2 = 5, third 0+1 = 1, fourth 1 + 0 = 1,

This theorem applies to any roads and intersections that run by water. This is also true for any position on the road (not just the intersection).

It can be seen from Fig. 9 that the straight-line vehicle is running at the speed of the running water, and the time taken to the next intersection at a constant speed is the straight green light at the beginning and end of each intersection of the It and the beginning and the end of the straight green light at the next intersection, that is, the vehicle is at the intersection. At the beginning of the green light, the speed of the water will drive to the next intersection, which is also the beginning of the green light. At the end of the green light, the page will be replaced at the speed of the running speed (Article 26) Driving to the lower intersection is also the end of the green light. The straight-through vehicles in all directions can achieve the effect of running water as long as they drive at the speed of the running water. The running time of the straight-through vehicles here is it.

(2) Basic plan 2: The distance between adjacent intersections is 0. It, and the running time of straight vehicles is lt.

As shown in Figure 10, all nodes still conform to the node theorem. The sum of the starting lights of the straight-through vehicles in both directions is 1 or 1+4=5. It can be seen from the figure that most of the intersections do not conflict with each other in the vertical and horizontal directions, and all of them can travel straight in all directions, and the following is taken as the node segment in the lower left corner.

This time interval is a square of I t for specific analysis. In this square road network, there are 100 intersections, of which 80 intersections can reach the full flow of vehicles in all directions, and the other 20 intersections (intersections circled by pens) There are conflicts between the vertical and horizontal flow periods, but the degree of conflict is different. The first eight types of intersections with the smallest conflict are respectively four nodes b. As shown in Figure 21 and four nodes c, as shown in Figure 22, the conflict is relatively large. The second type of six intersections are respectively three nodes d as shown in Fig. 23 and three nodes e as shown in Fig. 24. The third type of intersections with larger collisions are two nodes f, as shown in Fig. 25 and two nodes. g As shown in Fig. 26, the four types of intersections with the greatest conflict are node h as shown in Fig. 27 and node i as shown in Fig. 28. We have changed the green light running time of these conflicting intersections to node j as shown in Fig. 29 and node k as shown in Fig. 30, then the straight green time of each direction of the first type of 8 intersections has a time of 0. 9t and The running time coincides, that is to say, 90% of the straight-through vehicles can reach the state of running water at the intersection. For example, the original node node b is as shown in FIG. 21, and now the node j is as shown in FIG. 29, and the present description is taken as an example. The current direction of the flow period is 0. 4t~1. 4t, and now the current green light 'time period is 0. 5t~1. 5t, obviously 0. 5t~l. 4t count 0. 9t time period is coincident, so in In the total green time of It, there is 0. 9t of time to run, other nodes can be pushed in other directions.

So we conclude that:

1 In this scheme, 80% of the intersections can reach the full flow of vehicles in all directions.

2 8' ÷ 100 = 8% of the intersections can reach 90% of the straight-through vehicles in all directions

3 with 6 ÷ 100 = 6% of the intersections can reach 80% of the traffic in all directions

4 with 4 ÷ 100 = 4% of the intersections can reach 70% of the traffic in all directions

Replacement page (Article 26) 5 with 2 + 100 = 2% of the intersections can reach 60% of the straight-through vehicles in all directions

5. Scope of application: The time between intersections is 0. It can be applied to the integer multiple of It to make the straight-through vehicle basically achieve the effect of running water. Specifically: 1 assuming t = 0. 5 minutes, running water velocity V = 40k _m / hour, then 0. It's distance S = (0. 1 X 0. 5 + 60) X 40 = 0. 03.3 = 33 Meter. The 33m is a short distance, which shows that in the existing urban roads, we can use this method to basically reach the state of running water in all directions of each intersection.

2 In actual operation, because the straight traffic is the main traffic, and the left traffic is less, it is obviously unreasonable for the two traffic to enjoy the green time of the It. We can lengthen the straight green time of the intersection, but we must 5t, the left-turn period is shortened to 0. 5t. The 5th (the flow period of the flow) is shortened to 0. 5t. .

In this case, we can see that the distance between the area where the water is completely flowed and the area that cannot be completely flowed is evenly spaced, and the distance between them is 0. 5t, this is We have defined the direction in the design of road flow rules.

(1) Extension plan 1: The time distance is 2t, and the running time is 2t. Figure 11,

1. As can be seen from the figure, this scheme has the following characteristics:

1 The time distance between all adjacent intersections is 2t, and the straight running time in any direction of all intersections is 2t _;

2 It can be seen from the node graph that in the green light cycle of the intersection, the longitudinal and lateral directions occupy 2t in all 4t time, and the direct and reverse straight traffic are simultaneously open, and the left and right directions are straight. The traffic flow also turns on the green light at the same time. If the vertical direction is 0t and the two sides are simultaneously open, the horizontal direction must be 2t at the same time, and vice versa;

3 This way there is no left-turning green light passage time of the vehicle. We can make multiple U-shaped turn around before the mouth at the intersection, and multiple U-shaped turn around after the mouth. You can also set multiple U-shaped turn at the appropriate position in the road.

(2) Extension Scheme 2: The time is 2t from the bird, and the length of the water in the individual direction is > 2t. As shown in Figure 12,

This scheme is basically the same as the extension scheme. The main difference is: the intersection green light cycle period 4t is not equally divided into the vertical and horizontal directions, but the lateral direction is 2. 5t of the green light period, the longitudinal direction is 1. 5t of the green light period, this scheme is for the lateral vehicle More long strip cities are very suitable. Of course, the horizontal green light period can also be 2. 3t, 2. 4t...etc., while the vertical direction can also be 1. 7t, 1. 6t...etc. More details.

(3) Extension Scheme 3: It <flow time <2t, as shown in Figure 13,

In the straight flow period of the first two extension schemes, the green light cycle period 41 is fully occupied, and there is no extra time at the intersection to turn left. The straight flow time of each scheme is less than 2t, and the intersection has a green light time of left turn, intersection and There may be no multiple U-shaped return lanes in the road. 5t。 The horizontal length of the green light is 0. 6t. Replacement page (Article 26) Obviously, in this scheme, the straight-through vehicles at all intersections can reach the running water, the running time is 1.4t, and the left-turn green light in each direction is 0.6t. Now the node m is as shown in Figure 31, the green light for each direction. The time period is specified:

Ot-0.6t : ,; 0.6tl.4t :

; 2t-2.6t :

2.6t-3.4t _:

3.4t-0t: 4 . This program has an obvious feature: the time distance of each road is

The 0.6t and 1.4t intervals are distributed in both vertical and horizontal directions. And 0.6t is the length of the left turn green light, and 1.4t is the length of the straight green light. Therefore, we refer to the area between the two paths with a time distance of 0.6t as the "left turn area", and the area between the two paths with the time distance of 1.4t is called the "straight line area". Further research has found that roads can be arbitrarily added in the "left-turning area", and the straight traffic flow at each intersection can reach the running water, but no road can be added in the "straight-line area", otherwise the straight-through vehicles will collide and cannot reach full flow. travel.

For further explanation and argumentation, we will add two roads in the horizontal and vertical directions of the "left turn area", as shown in Figure 14. It is obvious that the straight-through vehicles at all intersections in this scheme can reach the running water, and the running time is 1.4. t, the left turn green light duration in all directions is also 0.6t, but there is a little shortcoming that some intersection left turn period is divided into two segments in one cycle, the current node n is specifically illustrated in Figure 14.

J ^ ,

0. lt-0.7t _: 0.7tl.5t: ~ ^> ; 1.5t-2. It: ; 2. lt-2.5t: ^,; 2.5t— 3.5t:

3.5t-3.9t:

3.9t-0. It:,. In this node, the green light period of the reverse left turn is divided into 2. lt-2.5t counts 0.4t and 3.9t- 0. It counts 0.2t two periods. Therefore, we summarize a rule. When the left turn green light is at, and the straight running water is (2- a) t (K2-a<2), the running plan is: "Left turn at area" and "straight line (2 - a) t area "interval distribution, and roads can be set in the at area and the vehicles in all directions can still reach the running water. No road can be added in the (2-a) t area, otherwise conflicts will occur. A straight-through vehicle cannot reach full flow.

(i) Comprehensive programme one:

Replacement page (Article 26) Figure 15: 1. The double solid line is the main road, the single solid line is the secondary road, the running speed of the main road vehicle is V, and the running speed of the secondary road vehicle is 2/3V. With the same distance, the vehicle on the main road takes 2t, while the vehicle on the secondary road takes 3t to complete.

2. The time distance of adjacent main roads is 2t. The main road is divided into three equal divisions between two adjacent intersections. The secondary roads are set on the equal points, so that the time distances of adjacent intersections on the main road are both 2 /3t. The time interval of adjacent intersections on the secondary trunk road is .3t/3=l t.

3. All the main roads are running in all directions, and the running time is 2t. In the square area enclosed by each main road, all the secondary roads flow in all directions, and the running time is Lt. In this scheme, the running water of the main road is consistent from beginning to end, but the running water on the secondary road is regional. When the vehicle crosses the main road from one area to another, there will be a short wait for a short period of time.

4. The order of primary and secondary traffic is: 1 First is the straight traffic on the main road. The planning and setting of roads and traffic lights should be centered on it. 2 Secondly, the left-turn traffic on the secondary road when the secondary road crosses the main road. It is obvious that the left-turn vehicle at the intersection is far more than the straight-through vehicle. 3 straight traffic on the main road.

5. Intersection:

1 At the intersection of the main road and the main thousand roads, we choose the intersection traffic flow scheme shown in Figure 18, that is, there is no left turn on the main road, only the vertical and horizontal two-way straight travel, and at the intersection with the peripheral mouth and the mouth The multi-shaped U-turnback is simultaneously provided with a multi-shaped U-turn signal lamp 37 in front of the front port and a multi-shaped X-turn signal lamp 38 in front of the reverse port.

At the intersection of the two thousand roads and the main road, go straight in all directions according to the water flow period marked in Figure 15. There is still no left turn on the main road, and there is no multi-shaped U-turn back after the mouth. There is only straight line on the main road. Right turn and multiple U-shaped turn in front of the mouth, and multiple U-shaped turn in the road. The left turn of the secondary trunk to the main road is shown in Figure 1. There is a special transition lane 7 for left-to-left turn, which can be realized smoothly. The vehicle on the secondary road turns to the left of the main road.

Example of a 3-way node: 'If node P is as shown in Figure 33,

The first time period: 10t/3~4t (0t)~2t/3 counts the green light duration of 4t/3. The main road is headed straight and the front is turned back and the second road is turned left and left into a combination, occupying the same green time. During this time, the left side of the main road of the main road is green, and the main road on the right side of the main road is green. When other cars are lit red.

The second period: 2 t /3~4 t /3 The green light duration of 2t/3, the main road is bidirectional. The beginning of this period is exactly the beginning of the reverse traffic of the main road, and the end is just the end of the traffic.

Replacement page (Article 26) The third period: 4 t / 3 ~ 8 t / 3 meter 4 t / 3 green light duration. This period begins with the end of the main road to the traffic. The end of this period is the end of the reverse traffic. During this time, the main road reverses straight and turns back and the secondary road turns right and left into a combination. At this time, the right side of the center safe island is lit green. The slow road on the left side of the main road lights up in a green light, and the other cars turn red.

The fourth time period: 8 t /3~10 t /3 The green light duration of 2 t /3, during this time, the main road is in both directions, the two hours are straight, the red light is on, and the second thousand roads are bright green light. The traffic lights of the flow of people crossing the main road in two steps all turn green, and the slow traffic on the secondary road lights up at the same time. The main road and the reverse front of the multi-shaped U-shaped return traffic flow are green. The intersection of other primary and secondary roads, and so on, will not be detailed.

(ii) Comprehensive programme II:

Figure 16: 1. In this scheme, the double solid line represents the main road, the single solid line represents the secondary trunk road, the running speed of the vehicle on the main road is V, and the running speed of the vehicle on the secondary trunk road is 3/5 V.

2. The time distance between adjacent main roads is 6 t. In this 6 t range, the secondary roads are set at the time distances of 2. 25t, 1.5t and 2.25t respectively, so that the time of the intersection of the main roads The distance is 2. 25t, 1. 5 t, 2. 25t, 2. 25t, 1. 5t, 2. 25t... The main road is 2. 25t on both sides, and the middle is 1. 5t, corresponding to the secondary road. The time distance of each intersection is 2. 25t ÷ 3/5=3. 75t,. 1. 5t ÷ 3/5=2. 5t, 2. 25t ÷ 3/5=3. 75t.

3, The straight traffic flow in all directions on all main roads is running in water, the running time is 2t, and the straight traffic flow in all directions on the secondary road is also running, the running time is 1. 5t, the difference between this scheme and the previous scheme is that The flow of traffic on the thousandth lane is no longer a regional flow of water running from start to finish.

4, intersection

Φ The intersection of the main thousand roads and the main road is the same as the comprehensive plan one, and will not be repeated here.

2 The intersection of the main road and the secondary road.

Depending on the flow planning and combination, there are many different types, but the starting moment of the straight-through traffic is constant. Others can be selected as needed.

An example of a junction node, such as node q, is shown in Figure 34.

The first type: The main and the secondary roads are not left-turned. The multiple U-shaped back-turns before and after the mouth are also divided into four periods, namely: the first period 1. 75 t~2. 25t count 0 5t green light duration, main road right straight and turn back and secondary roads turn back; second time period is 2. 25 t~3. 75t count 1. 5t green light pair long, main road two-way straight and secondary road On the vehicle

Replacement page (Article 26) The third time period is 3.75Γ0. 25t count 0. 5t green light duration, the main road is left and straight, and the vehicle is turned back on the secondary road; the fourth time period is 0. 25Γ1. 75Ϊ1 1. 5t The green light duration, the secondary roads go straight in two directions and the vehicles on the main road turn back. The length of the main road is 3⁄4 ^, and the length of the secondary road is 1. 5t. The length of the multiple V-shaped turns before and after the crossing is 2t. The length of the turn does not need to be so long. The length of the green light can be shortened at the time of approaching the straight running time, so as not to affect the straight running ice of the main and secondary trunk roads. The time of the main road pedestrians also reaches the length of 2t. This length can also be appropriately reduced to avoid the straight traffic flow. interdependent.

The second type: The main road only has multiple U-shaped turns and straight ahead before the mouth, and the left and right lines of the secondary road. It is also divided into four time periods: The first time period is 1.75~2. 25t meter 0. 5t green light duration, the main road is straight to the right and the front is turned back and the secondary road is turned to the left; the second time is 2. 25t ~3. 75t meter 1. 5t green light duration, the main road is bidirectional straight; the third time period is 3. 75f0. 25t count 0. 5t green light duration, main road left straight and frontal back turn and secondary road reverse left turn The fourth paragraph is 0. 25 Γ 1. 751 counts 1. 51 green light duration, secondary trunk two-way straight travel and main road two-way front multiple U-turn.

The third type - the second type of variation, the first three periods are the same, only the fourth period is divided into two periods, one period of the secondary road is two-way straight, and another period is used for the two-way of the secondary road Turn left, this is mainly used when the secondary trunk road turns left to the main road.

Of course, it is also possible to combine these types to form a new type, which is mainly determined according to needs.

According to the methods of the previous two comprehensive series of schemes, the method of quiz is summed up, which is the even distance of all the intersections of the main roads, that is, 2t, 4t, 6t. Etc. Therefore, when planning roads to set traffic lights, whether it is a new city or an old city, we must strive to make the time distance between the main roads an even multiple of t. Only in this way can the vertical and horizontal straight intersections of the intersections be realized, achieving various directions. The maximum transit time of a straight-through vehicle. The odd method, on the main road, the distance between the main intersections and the main intersection is an odd multiple of t. This position is called the singularity. This position is the best position for setting the two-way turning. Only in this position, back. The vehicle can be turned back within the shortest waiting time, and when the straight running time is 2t, the returning vehicle in both the positive and negative directions can directly turn back without waiting in the whole running time. On the basis of Figure 8, we add multiple U-shaped return lanes for the vehicles in the forward and reverse directions on both ends of the zebra crossing, and add multiple U-shaped turn signals, which form a complete set of vehicle turnarounds and pedestrians. At the intersection of the roads, because of the running water, there are running time and idle time of the straight-through vehicles at any place on the road, so we can use the free time to set such intersections wherever needed, which avoids pedestrians. Scurrying and chaotic vehicles, while ensuring that the vehicle is running.

The road traffic planning anti-blocking system and the anti-blocking method, the circular multi-level public transport system, as shown in Fig. 17, a circular multi-level public transport system: dividing the city into several areas by using the city's vertical and horizontal main roads as side lines, The bus is divided into a multi-level system. The first-class bus runs on the main road and takes the big ring route (usually only the straight line and the right replacement page (Article 26) Turn, no left turn) The second-class small bus travels in each area, and also takes the circular route. It also has only straight and right turn. The number and size of small buses are designed according to the size of the area. Some small areas can even use miniatures. The van acts as a small bus. This is called the multi-level public transport system, also known as the secondary public transport system. However, if the central area of the big bus is very busy, the passengers are large, and the passengers in the remote areas are small, then we will add a large number in the central section. Bus, still taking the ring route. The added bus is called the secondary bus, and the small bus in the area is called the third-class bus. This system is called the three-level bus system, and so on. ·· Level 4............ Level 5...

There are also three requirements for the circular multi-level bus system: . '

1. Large buses only have 2 stations when passing through each area.

2. The stop time of each bus of the big bus is best considered with the green light cycle period of 4t. The big bus should be connected with the traffic light control center to grasp the appropriate driving speed and the station stay time.

3, the same level of bus appearance and stop sign in the same color, to facilitate passengers to know.

Second, the function distinction: Big bus driving on the main road, large size, large passenger capacity, fast driving speed, long distance transport passengers

The small bus has two functions: one is to drive in the area, it is convenient to send passengers to the destination, and the other is to facilitate passengers to transfer to other large buses in the other direction, so that passengers can really achieve zero transfer, fast transfer, bus and The bus is stitched and docked.

Third, the advantages:

1. The number of buses has been greatly reduced, the bus distribution is more reasonable and balanced, and repeated waste is avoided.

2. Due to the implementation of the circular route, there is no left-turn signal of the bus, which makes the intersection go straight longer and makes the bus run faster. This also coincides with the left-turn of the main road in the comprehensive series.

3. Since only one or two stations are set in each area, the needs can be met, the station of the big bus is greatly reduced, the time on the road is greatly reduced, and the long-distance passengers can reach the destination more quickly.

4. Due to the seamless docking of small buses, passengers can quickly transfer to other big buses.

5, so that passengers will go to the nearest route anywhere, no longer take the road.

6. In combination, it can be said that this system can make the bus really a fast bus, so that passengers can quickly reach any part of the city.

Replacement page (Article 26)

Claims

Claim

1. A road traffic planning anti-blocking system, which is characterized in that: the intersection is designed as a stepped intersection, and a plurality of multiple U-shaped return lanes (2) are arranged outside the center of the intersection, The U-shaped return lane (9) has a straight waiting lane (4), a straight running lane (5) and a right-turning lane (6) on the right side.

2. The road traffic planning anti-blocking system according to claim 1, wherein: said multiple U-shaped turning lane

(2) In order to widen the existing reversing junction to 10-100 m, including the multi-turnback lane (9) in front of the mouth, the multi-shaped U-turn lane (10) in the right and the multiple U-shaped back The lane (11); the right turn transition lane (6). The forward transition lane (13), the middle transition lane (14), and the trailing transition lane (15).

3. The road traffic planning anti-blocking system according to claim 1, wherein: the left-to-left turn dedicated transition lane (7) is arranged behind the intersection, and the left-to-left vehicle shares the same green time period as the straight-through vehicle.

4. The road traffic planning anti-blocking system according to claim 1, 2 or 3, characterized in that: the parallel transitional lane (16) between any two lanes is 8-12 meters in length, and the parallel vehicles are driven. The trajectory is a three-fold line (33), and the beginning of the parallel transition lane (16) is provided with a double solid line (34).

5. An anti-blocking method for applying an anti-blocking system for road traffic planning according to claim 1, characterized in that: planning a road intersection, the specific method is as follows:

1 Increase the road junction area, increase the number of intersections, and the number of lanes after the intersection expansion is Ν^ η+3 _;

3 Straight traffic to the intersection is carried out.

6 . The road traffic planning anti-blocking method according to claim 5 , wherein: planning the traffic time of the traffic flow and the pedestrian flow on each lane of the intersection comprises: performing a two-step roundabout method on the traffic flow at the intersection, and two Step back to the straight line method, the slow road vehicle two steps back to the left turn method, the pedestrian flow at the intersection to implement the pedestrian two-step segmentation method.

7. The road traffic planning anti-blocking method according to claim 5, wherein: the running water is designed to design a green light of each intersection, so that the green light of the straight traffic of the adjacent intersection is gradually opened, so that the straight running water lane is 5) The straight-going vehicles driving at a certain speed are driven to a green light at the next intersection, and the straight-through vehicles do not need to stay at each intersection to achieve continuous driving.

8. The road traffic planning anti-blocking method according to claim 6, wherein: the two-step roundabout method is completed in two steps for the left traffic flow, and the first step is to cross the intersection with the straight traffic flow. The second step is to cross the intersection and follow the multiple U-shaped return lane (2) to make a turn. It is necessary to set a triple signal light in front of the intersection, in the intersection and after the intersection; Replacement page (Article 26) The two-step round-trip straight method is completed in two steps for the straight traffic flow, the first step is first right turn, the second step is passed through the right multi-U-shaped return drive lane (10) and then turned right; the slow track vehicle The two-step back-turning method is completed in two steps: the first step is synchronized with the straight-direction signal, the second step is synchronized with the right-direction straight line signal; the pedestrian two-step segmentation-line method is _ Add a central security island ( _{32) in the} middle of _Ma Road. Pedestrians wear a two-step-through-horse-road.

9. The road traffic planning anti-blocking method according to claim 7, wherein: the running water comprises various methods of flowing water lengths of lt, I t - 2t, 2t and greater than 2t, respectively, and includes main roads. And the vehicles on the secondary roads run at different speeds, respectively, and the courtship method and the odd method, including the flow distance, that is, the time distance between all the intersections of the main roads is an even multiple of t The straight-line and horizontal cross-section of the intersection is realized, and the maximum transit time of the straight-through vehicles in all directions is realized; the odd-numbering method is the main road, and the distance between the main intersections is a few times of the distance from the main intersection, which is called the position. For the singularity, this position is the best position to set the two-way turn. In this position, the vehicle can be turned back within the shortest waiting time, and when the straight running time is 2t, the singularity is reversed in both directions. The abducted vehicle can be directly turned back without waiting during the entire ice blasting period.

10. The road traffic planning anti-blocking method according to claim 9, wherein: the flowing water running comprises a circular multi-level public transportation system on the main road and the secondary road, and the circular multi-level public transportation system is a city. The vertical and horizontal main road divides the city into several areas for the sideline, and divides the public transportation vehicles into multi-level systems. The first-class big buses drive on the main roads, take the big circular route, only go straight and turn right, no left turn; Small buses travel in each area, and also take the circular route. They also have straight and right turn, and the number and size of small buses are designed according to the size of the area.

Replacement page (Article 26)