JP2005032121A - Traffic control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the movement of vehicles at an intersection smooth and safe, and to increase the number of passing vehicles per unit time. <P>SOLUTION: The traffic control system which controls the traffic at an intersection comprises first guiding machines 11a, 12a, 21a, 22a which are provided an driveways 11, 12, 21, 22, respectively, for a vehicle entering an intersection C and control the approach of the vehicle to the intersection, second guiding machines 11b, 12, 21b, 22b provided on the vehicle roads and in the front of the first guiding machines by a predetermined distance, and a guiding machine control means 3 which makes control of the first and second guiding machines so that, when a group consisting of vehicles positioned between the first and second guiding machines is regarded as one unit, at least the entire vehicles in the one unit pass through the intersection when the first guiding machine permits the progress of the vehicle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a traffic control system for controlling traffic at an intersection.

In recent years, the number of vehicles traveling on the road has increased, and tends to be crowded with straight cars, right-turn cars, left-turn cars, and pedestrians crossing, especially at intersections. At this intersection, a traffic light is provided, and the vehicle stops when the signal is red and moves forward in blue. (For example, Patent Documents 1 and 2)
JP 2003-85688 A JP-A-11-272992

  However, as mentioned above, when the signal is red and the vehicle stops, the driver first confirms that the signal has changed to blue when leaving the vehicle, and then moves to the start-up operation. It becomes. Also, if the previous vehicle does not depart, the vehicle cannot depart, so the departures are delayed one after another and the delay increases. As a result, the inter-vehicle distance is increased and the number of passing vehicles per unit time is reduced.

  In addition, since the vehicle enters the intersection until the signal switches from blue to yellow or red, for example, a right turn car can not turn right easily due to the oncoming vehicle, and a situation where a sudden turn to the right occurs at the end. The movement of the vehicle at the intersection was messy and had a safety problem.

  Furthermore, since straight and right-turn cars are mixed at the intersection, it is unavoidable that a situation where a right-turn vehicle and a straight-turn car try to intersect at the same time cannot be avoided. Was prone to clutter and had safety issues.

  The present invention has been proposed in view of the above, and it is intended to provide a traffic control system that can make the movement of a vehicle at an intersection smooth and safe and can increase the number of passing vehicles per unit time. Objective.

  In order to achieve the above object, the invention according to claim 1 is a traffic control system for controlling traffic at an intersection, and is provided for each roadway of a vehicle entering the intersection, and the vehicle enters the intersection. A first induction machine for controlling the first induction machine, a second induction machine provided on the roadway and a predetermined distance from the first induction machine, the first induction machine and the second induction machine, The first induction machine and the second induction machine are controlled so that at least one whole vehicle passes through the intersection when the first induction machine is permitted to move forward. And induction machine control means for performing the above.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention described above, the induction machine control means stops the second induction machine when the first induction machine is permitted to move forward. The second induction machine is controlled to be permitted to move forward when the first induction machine is stopped.

  The invention described in claim 3 is characterized in that, in addition to the configuration of the invention described in claim 1 or 2, the roadway includes lanes of straight ahead, right turn, and left turn.

  Furthermore, the invention described in claim 4 is characterized in that, in addition to the configuration of the invention described in any one of claims 1 to 3, the intersection includes a rotary.

  In addition to the configuration of the invention according to any one of the first to fourth aspects, the invention according to claim 5 is configured such that the distance between the first induction machine and the second induction machine is determined as an intersection. It is characterized by being set to be equal to or shorter than the diameter.

  The invention described in claim 6 is characterized in that, in addition to the configuration of the invention described in any one of claims 1 to 5, a safety zone is provided on the pedestrian crossing.

  In the traffic control system of the present invention, the group of vehicles between the first induction machine and the second induction machine is taken as one unit, and the first vehicle is passed through the intersection so that the whole vehicle of the one unit passes through the intersection. Control the induction machine and the second induction machine. For this reason, the entire vehicle of one unit moves as a group at a slow speed without stopping even before the intersection. Therefore, the phenomenon that has occurred in the past, when the train of stopped vehicles starts, does not cause a long train (inter-vehicle distance), and the unit vehicle group moves smoothly as a group.

  In addition, since the vehicle train does not become long, it is possible to increase the number of vehicles that can pass during the period when the signal is green, which can contribute to the elimination of traffic congestion.

  Moreover, since the 1st induction machine should just ensure the time slot | zone during which the vehicle unit of 1 unit passes, it can perform the change from the stop of the 1st induction machine to advance permission, and the advance permission to stop in a short time. In addition, there is no need to stop and wait at an intersection for a long time (for example, 1 minute) as in the conventional case.

  In addition, no vehicle other than the one unit vehicle group is allowed to pass through the intersection, so there is no vehicle that rushes into the vehicle before it stops and the vehicle can move smoothly at the intersection. It can be.

  In addition, straight and right turn cars are mixed at the intersection, but only one unit of vehicle group passes through the intersection, so when the right turn turns to the right, the oncoming lane and the right turn are complete. The right turn car can turn right at a slow speed without stopping. From this point, the vehicle can move smoothly at the intersection and be safe. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing the overall configuration of the traffic control system of the present invention. The traffic control system according to the present invention is a system for controlling traffic at an intersection C between two roads 10 and 20. On the opposite roadways 11 and 12 of the road 10, the first induction machines 11a and 12a for controlling the approach of the vehicle to the intersection C and the first induction machines 11a and 12a on the roadways 11 and 12 are provided. From each of these, the second induction machines 11b and 12b provided in front of a predetermined distance are respectively arranged.

  Similarly, on the roads 21 and 22 opposite to each other on the road 20, the first guidance machines 21a and 22a for controlling the approach of the vehicle to the intersection C and the first guidance on the roads 21 and 22 are provided. From each of the machines 21a and 22a, second induction machines 21b and 22b provided in front of a predetermined distance are respectively arranged.

  These induction machines 11a, 11b, 12a, 12b, 21a, 21b, 22a, 22b are connected to the induction machine control means 3 by electric wiring or wirelessly, and exchange signals with each other. That is, the induction machine control means 3 sends a control signal to each of the induction machines 11a, 11b, 12a, 12b, 21a, 21b, 22a, and 22b to control the induction machine and the second induction machine. A group consisting of vehicles in between (for example, a vehicle between the first induction machine 11a and the second induction machine 11b) is defined as one unit, and when the first induction machine is permitted to move forward, at least one unit of the entire vehicle Is controlled to pass through the intersection.

  Next, traffic control performed by the induction machine control means will be described more specifically with reference to FIGS.

  2-10 is explanatory drawing which shows the traffic control by a guidance machine control means in steps. In these figures, pedestrian crossings 31, 32, 33, and 34 are further added as elements to FIG. 1 described above. In the middle of each pedestrian crossing 31, 32, 33, 34, a safety zone S where a pedestrian can safely wait is provided. In the following explanation, the induction machines 11a, 11b, 12a, 12b, 21a, 21b, 22a, and 22b in FIG. 1 can be lit with red (stop), blue (forward permission), and yellow (caution) lamps. It is assumed that the signal is a traffic light. In addition, pedestrian traffic lights 31m, 31n, 32m, 32n, 33m, 33n, 34m, and 34n are provided at both ends of the pedestrian crossing 31, 32, 33, and 34, respectively.

  The induction machine control means 3 (FIG. 1) has the traffic signal 11a and the traffic signal 12a as a pair, the traffic signal 21a and the traffic signal 22a, the traffic signal 11b and the traffic signal 12b, and the traffic signal 21b and the traffic signal 22b, respectively. Let's do the operation. Then, control is performed so that when the traffic lights 11a and 12a are blue, the traffic lights 11b and 12b are red, and when the traffic lights 11a and 12a are red, the traffic lights 11b and 12b are blue. Further, the traffic lights 31m, 31n, 33m, and 33n are caused to perform the same operation, and the traffic lights 32m, 32n, 34m, and 34n are caused to perform the same operation.

  Each of the roadways 11, 12, 21, and 22 is divided into three lanes in front of the intersection C: left turn, straight ahead, and right turn. The traffic lights 11a, 11b, 12a, 12b, 21a, 21b, 22a, and 22b are shown hatched when the signal is red, white when the signal is blue, and shaded when the signal is yellow. As described above, the road 10 is provided with the opposite roads 11 and 12, and the road 20 is provided with the opposite roads 21 and 22, and the vehicle passes through each of the roads 11, 12, 21 and 22. However, here, the description will be focused on the movement of the vehicle on the roadway 11.

  First, referring to FIG. 2, a vehicle traveling on the roadway 11 from the traffic light 11b toward the traffic light 11a toward the intersection C travels at a low speed because the traffic light 11a is a red signal, and the leading vehicle moves to the intersection C. Before reaching, the traffic light 11a switches from red to blue.

  FIG. 3 shows the situation when the traffic lights 11a, 12a are switched from red to blue. At this time, the traffic lights 11b and 12b are switched from blue to yellow and then red, the traffic lights 21a and 22a are similarly switched from blue to yellow and red, and the traffic lights 21b and 22b are switched from red to blue. Also, the pedestrian-only traffic lights 31m, 31n, 34m, and 34n are switched from red to blue like the traffic lights 11a and 12a, and the pedestrian-only traffic lights 32m, 32n, 34m, and 34n are more than the traffic lights 21a and 22a. It is in a state of switching from blue to yellow through red about 2 seconds earlier.

  In FIG. 3, since the traffic light 11b turns red, the vehicles between the traffic lights 11a and 11b are grouped and operate as one unit without increasing / decreasing thereafter. It will move forward as a group while slowing down. Then, when the leading vehicle reaches the pedestrian crossing 34 before the intersection C, the traffic light 11a switches from red to blue. Therefore, the leading vehicle enters the intersection C at a slow speed without stopping, and moves forward at the slow speed without stopping at the following vehicle.

  That is, even if the traffic light 11a is present, the vehicle is not stopped by the traffic light 11a, and the traffic light 11a has a function of slowing down a unit vehicle group that moves forward.

  4 shows the situation after 1 second when the traffic lights 11a and 12a turn blue, FIG. 5 shows the situation after 3 seconds, FIG. 6 shows the situation after 5 seconds, and FIG. 7 shows the situation after 6 seconds. 8 shows a situation after 8 seconds, FIG. 9 shows a situation after 9 seconds, and FIG. 10 shows a situation after 10 seconds.

  The intersection C is divided into concentric three lanes C1, C2, C3 and a central circular central safety zone C0. When passing through the intersection C, the left turn vehicle is the lane C3 and the corner lane. Drive C4, straight lanes select lanes C2 and C3, and right turn vehicles select lanes C1 and C2.

  The traffic lights 11a, 12a, 21b, and 22b switch from blue to yellow after 8 seconds (FIG. 8), and switch from yellow to red after 10 seconds (FIG. 10). The traffic lights 21a, 22a, 11b, and 12b are switched from red to blue after 10 seconds (FIG. 10).

  Of the vehicles that have passed the traffic light 11a, the left turn vehicle waits for the pedestrian to finish crossing the pedestrian crossing 31 and passes the pedestrian crossing 31 from the corner lane C4 to the left lane of the lane 21 or from the lane C3 to the pedestrian crossing 31. Pass through and enter the central lane of roadway 21. The straight vehicle travels along the road C3, passes through the pedestrian crossing 32, and enters the central lane of the road 11. The right turn car turns to the right along the lanes C1 and C2. At that time, the straight car and the right turn car in the opposite lane 12 have just finished passing and are no longer in front. Head toward the pedestrian crossing 33 and after passing through the pedestrian crossing 33, enter the center lane or the left lane of the roadway 22.

  The central safety zone C0 at the intersection C is normally prohibited from entering, but can be used as a retreat place for temporarily evacuating a damaged vehicle or an accident vehicle in the intersection C. By causing the intersection C to evacuate at the time of occurrence of the traffic, it is possible to avoid traffic congestion at the intersection C.

  On the other hand, on the roads 21 and 22, the vehicle temporarily goes out between the traffic light 21 a and the traffic light 21 b and between the traffic light 22 a and the traffic light 22 b (FIGS. 2 and 3), but the traffic lights 21 b and 22 b Since it switches to blue, the vehicle in front of it enters (FIG. 4). In that case, since the front traffic lights 21a and 22a are red signals, they move forward slowly. When the leading vehicle reaches the pedestrian crossing 31 and 33 in front of the intersection C, the traffic lights 21a and 22a are switched from red to blue (FIG. 10). Therefore, the leading vehicle enters the intersection C at a slow speed without stopping, and moves forward at the slow speed without stopping at the following vehicle. Further, since the traffic lights 21b and 22b are red by that time, the vehicle between the traffic lights 21a and 21b and the vehicle between the traffic lights 22a and 22b do not increase or decrease thereafter. It operates as one unit. That is, like the traffic lights 11a and 12a, the traffic lights 21a and 22a have a function of slowing down a unit vehicle group moving forward.

  In this traffic control system, when a unit vehicle group passes through the intersection C, the traffic lights are switched quickly. For example, in this embodiment, the traffic lights 11a and 12a change from red to blue in 10 seconds or from blue to yellow through red. The time to cross the pedestrian crossing will be shortened accordingly. Therefore, in the middle of each pedestrian crossing 31, 32, 33, 34, there is a safety zone S where pedestrians can safely stand by, and if the signal switches halfway before crossing the pedestrian crossing, To be able to wait. Since the waiting time for the safety zone S is as short as about 10 seconds in this embodiment, even when waiting for the safety zone S, it is possible to walk again after 10 seconds and to cross quickly.

  Here, a numerical example will be given and described. Intersection C (corner C4) with a lane width of 3m, a distance between traffic lights 11a and 11b of 24m (vehicle length is 4m, distance between vehicles is 5m), and crosswalks on both sides are included. The diameter (including the diameter of the rotary) is 36 m. There are a total of 15 vehicles in 5 lanes between the traffic light 11a and the traffic light 11b, and this vehicle group becomes one unit and heads for the traffic light 11a at a slow speed of 18 km / h (5 m / s). It is assumed that a straight vehicle becomes a little less than 30 km / h (8 m / s) when exiting intersection C.

  At this time, 15 cars (30 cars in total) on the roadways 11 and 12 pass through the intersection C in 10 seconds during which the vehicle group can move forward until the traffic light 11a turns red again, and then the next 10 seconds. Now, 15 vehicles (30 vehicles in total) on the roads 21 and 22 pass through the intersection C. That is, 60 units (= 30 × 2) pass in 20 seconds, and 180 units pass in 1 minute.

  On the other hand, in the case of conventional traffic control, when the intersecting roads are both three lanes on one side before the intersection as in this embodiment, the time from red to red again is about 60 seconds, There is data that the number of passing vehicles per minute during that period is 98 vehicles. In this case, on the other road that intersects, the vehicle stops for 60 seconds and waits.

  As described above, in the traffic control system of the present invention, the group consisting of the vehicles between the traffic lights 11a and 11b is taken as one unit, and the traffic lights 11a and the traffic lights are arranged so that the entire vehicle of one unit passes through the intersection C. 11b is controlled. For this reason, the entire vehicle of one unit moves as a group at a slow speed without stopping even before the intersection C. Therefore, the phenomenon that has occurred in the past, when the train of stopped vehicles starts, does not cause a long train (inter-vehicle distance), and the unit vehicle group moves smoothly as a group.

  In addition, since the vehicle train does not become long, it is possible to increase the number of vehicles that can pass during the period when the signal is green, which can contribute to the elimination of traffic congestion.

  In addition, since the traffic light only needs to secure a time zone during which one unit vehicle group passes, the traffic light can be switched from red to blue and from blue to red in a short time. There is no longer any waiting and stopping at the intersection for one minute).

  Further, since the intersection C is not allowed to pass through other than the unit vehicle group, there is no vehicle that enters in a rush before turning red, and therefore the movement of the vehicle at the intersection C can be made smooth. Can be safe.

  In addition, straight and right turn cars are mixed at the intersection, but only one unit of vehicle group passes through the intersection C. Therefore, when the right turn turns to the right, the straight and right turn cars on the opposite lane pass. When it is completed, the car turns right and the right turn car can turn right at a slow speed without stopping. From this point as well, the movement of the vehicle at intersection C can be smooth and safe. It can be.

  In the above description, the case where the intersecting roads are both one-side three lanes before the intersection has been described as an aspect of the intersection, but the present invention can be similarly applied even if the intersection is in another aspect. For example, the intersection roads are both one-lane four lanes before the intersection, the intersection roads are both one-lane two lanes before the intersection, and the intersection roads are both one-lane lanes before the intersection. The present invention can be applied to various forms of intersections such as an intersection or one of the intersecting roads in front of the intersection with three lanes on one side and the other in front of the intersection with two lanes on one side or one lane. Can be made.

  In the above description, as the first and second induction machines, the traffic lights that light red, blue, and yellow are used. However, other types of induction machines, for example, a breaker or elevator that operates a bar, are used. You may make it use.

  In addition, although the signal switching of the traffic light has been described as 10 seconds, an arbitrary time may be set according to the size of the intersection, for example, 6 seconds or 15 seconds. In short, it is only necessary to set a time width during which one unit of vehicle group can pass without difficulty.

  Furthermore, regarding the relationship between the distance between the first induction machine and the second induction machine and the diameter of the intersection, the distance between the first induction machine and the second induction machine in the above description is The diameter of the intersection is 30 m, and the diameter of the intersection is 36 m. However, these may be set to an optimum distance as appropriate in consideration of the size of the intersection, traffic volume, and the like. However, in consideration of quick movement at the intersection of one unit vehicle group, it is preferable to set the distance between the first induction machine and the second induction machine to be equal to or shorter than the diameter of the intersection.

It is a figure showing the whole traffic control system composition of this invention. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, and has shown the condition before the traffic lights 11a and 12a switch from red to blue. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, and has shown the condition at the time of the traffic lights 11a and 12a switching from red to blue. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, The traffic lights 11a and 12a turn blue and the condition after 1 second is shown. FIG. 5 shows the situation after 3 seconds, FIG. 6 shows the situation after 5 seconds, FIG. 7 shows the situation after 6 seconds, and FIG. 9 shows the situation after 9 seconds, FIG. 9 shows the situation after 9 seconds, and FIG. 10 shows the situation after 10 seconds. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, The traffic lights 11a and 12a turn blue and the condition after 3 seconds is shown. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, The traffic lights 11a and 12a turn blue and the condition after 5 seconds is shown. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, The traffic lights 11a and 12a turn blue and the condition after 6 seconds is shown. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, and has shown the situation 8 seconds after the traffic lights 11a and 12a turn blue. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, and shows the situation 9 seconds after the traffic lights 11a and 12a turn blue. It is explanatory drawing which shows the traffic control by a guidance machine control means in steps, and shows the situation 10 seconds after the traffic lights 11a and 12a turn blue.

Explanation of symbols

3 induction machine control means 10 road 11 road 11a traffic light (first induction machine)
11b Traffic light (second induction machine)
12 Roadway 12a Traffic light (first induction machine)
12b Traffic light (second induction machine)
20 Road 21 Road 21a Traffic light (first induction machine)
21b Traffic light (second induction machine)
22 Roadway 22a Traffic light (first induction machine)
22b Traffic light (second induction machine)
31, 32, 33, 34 Crosswalk 31m, 31n, 32m, 32n, 33m, 33n, 34m, 34n Traffic light C Intersection C0 Central safety zone C1, C2, C3 lane C4 Corner lane S Safety zone

Claims (6)

In a traffic control system that controls traffic at intersections,
A first induction machine provided for each roadway of a vehicle entering the intersection and controlling the vehicle's approach to the intersection;
A second induction machine provided on the roadway and a predetermined distance from the first induction machine;
The group consisting of vehicles between the first induction machine and the second induction machine is set as one unit, and when the first induction machine is allowed to move forward, at least one unit of the whole vehicle passes through the intersection. Induction machine control means for controlling the first induction machine and the second induction machine;
A traffic control system comprising:   The induction machine control means controls the second induction machine to stop when the first induction machine is permitted to advance, and to control the second induction machine to allow advance when the first induction machine is stopped. Item 2. The traffic control system according to Item 1.   The traffic control system according to claim 1, wherein the roadway includes straight lanes, right turn, and left turn lanes.   The traffic control system according to claim 1, wherein the intersection includes a rotary.   The traffic control system according to any one of claims 1 to 4, wherein a distance between the first induction machine and the second induction machine is set to be equal to or shorter than a diameter of the intersection.   The traffic control system according to claim 1, wherein a safety zone is provided on the pedestrian crossing.