JPS5822800B2 - Road junction inflow control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road merging section inflow control device that can smoothly control traffic flow at, for example, a highway merging section.

Conventionally, at expressway junctions, traffic signals are used to inform vehicles traveling on each road whether or not vehicles are traveling on the main road or approach road near the junction. The influx of vehicles is carried out smoothly and safely.

However, simply using traffic signals to notify whether or not vehicles are passing on each road near the junction is not enough.
When vehicles are constantly passing on the main road, the driver of a vehicle attempting to enter the main road from the approach road must:
Before entering the main road, check behind you and stop once before entering the main road, so from the approach road,
It is not possible to enter the main road smoothly and safely.

Therefore, the present invention was made in view of the above-mentioned drawbacks of the conventional example. An object of the present invention is to provide a road junction inflow control device that allows vehicles to smoothly and safely flow from a road to a main road.

According to the present invention, the traffic volume and traffic flow on the main road and the approach road are detected, the available lanes of the main road or the approach road at the merging point are determined based on the detection output, and the usable lanes of the main road or the approach road at the merging point are determined based on the determination result. Since the traffic signals placed in each lane are controlled, drivers of vehicles entering the main road from the approach road can smoothly merge onto the main road without checking behind them or stopping. It is possible to perform smooth and safe inflow control at a road junction by preventing rear-end collisions that occur when checking the rear and traffic jams caused by following vehicles that occur when a vehicle repeatedly stops.

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 shows the installation state of a road junction inflow control device 4 at a junction 3 between a main road 1 of an expressway and an approach road 2 entering the main road 1. As shown in FIG.

And this main road 1 is the first lane 1a + second lane 1b,
It has a third lane 1c and a fourth lane 1d, and the approach road 2 has a first lane 2a and a second lane 2b.

These lanes 1a, lb, 1c, 1a + 2 a +
2b is formed by a dividing line.

A road information board 5 and a traffic signal section 6 are installed in the forward direction of the main road 1 in the direction of vehicle movement at the merging point 3 in order of the direction of movement of the vehicle.

The road information board 5 variably designates and displays the driving lane for vehicles traveling in the 3 directions at the merging point on the main road 1, so that the vehicles traveling in the 3 directions at the merging point drive in the designated lane. It is something that helps you do what you want.

The traffic signal unit 6 includes a first lane dedicated signal 6a that can prohibit traffic in the first lane 1a at the merging area 3, and a second lane dedicated traffic signal 6a that can prohibit traffic in the second lane 1b at the merging area 3. A dedicated traffic light 6b, a third lane dedicated signal 6c that can prohibit traffic in the third lane 1c at the merging section 3, and a third lane dedicated traffic signal 6c that can prohibit traffic in the fourth lane 6d at the merging section 3.

A traffic light 6d exclusively for the fourth lane is provided.

Traffic lights 6 a + 6 b t 6 C dedicated to each lane are provided in each of the lanes 1 a, 1 b, 1 c, and 1 d.

6d, vehicles are finally prohibited from entering the merging section 3 from lanes other than the designated lane designated in accordance with the traffic volume.

Each lane 1a, lb, 1c, 1d has each traffic light 6a +
Stop line 7a corresponding to 6 b + 6 c + 6 d
, 7b + 7c + 7a are provided.

In the forward direction of the approaching vehicle on the approach line road 2 at the merging point 3, there are a road information board 8, a variable speed sign 9, a road information board 10, and a variable speed sign 11a in the order of the direction of the approaching vehicle.
and a variable label 11b, variable labels 12a, 12b,
A first traffic signal section 13, a second traffic signal section 14, and a variable speed sign section 15° are installed.

A stop line 16a, 16b is provided in each lane 2a, 2b in the lower part of the second traffic signal section 14.

The road information board 8 displays a designated lane for vehicles traveling on the approach road 2 toward the junction 3 when they enter the main road 1.

The contents of this designated display can be changed.

The variable speed signs 9.11a and 15 are for variably displaying a safe driving speed for vehicles traveling on the approach road 2 in the direction of the merging point 3 in accordance with the traffic volume.

The road information board 10 is capable of variably specifying and displaying the driving lane of a vehicle traveling on the approach road 2 in the direction of the merging point 3.

The variable sign 11b is used to variably display to a vehicle traveling on the approach road 2 in the direction of the merging point 3 that the driving lane on the approach road 2 is reduced before the merging point 3.

The variable sign 12a variably displays whether or not it is possible for vehicles to travel in the corresponding first lane 2a.

Similarly, the variable sign 12b variably displays whether it is possible for vehicles to travel in the corresponding second lane 2b.

The first traffic light section 13 includes a first lane 2a at the merging section 3.
A preliminary traffic light 13a informs rear vehicles traveling on the approach road 2 whether or not the second lane 2b at the merging section 3 is passable. A backup signal 13b is provided to notify a traveling vehicle behind the vehicle.

The second traffic signal section 14 includes the first lane 2a at the merging section.
A traffic light 14 exclusively for the first lane that can prohibit the passage of traffic.
a, and a second lane dedicated traffic light 14b that can prohibit traffic in the second lane 2b at the merging section 3.

A traffic light 1 dedicated to each lane installed in each lane 2at2b
4a and 14b, it is finally prohibited to enter the merging area from lanes other than the designated lane designated according to the traffic volume.
h.

A monitoring ITV camera 17 is installed in front of the merging section 3 as a vehicle detection means for detecting the traffic flow and traffic volume on each road 1 and 2.

A loudspeaker 18 is provided at the merging section 3 to notify drivers of traffic regulation information by voice.

On the main road 1 and the approach road 2, well-known vehicle detectors 19 for detecting the traffic flow and traffic volume on each road 1 and 2 are installed at appropriate locations before the merging point 3 (Fig. (not shown).

As shown in FIG. 2, information on traffic flow and traffic volume detected by the vehicle detectors 19...
, the center modem 21, the terminal modem 22, etc. are sent to the central control center 23, which is a determining means for determining usable lanes at the merging section.

Based on the sent traffic flow and traffic volume information, the central control center 23 determines usable lanes at the merging section and sends out a command signal.

This command signal is transmitted to the terminal modem 24 and the center modem 2.
1. Main line signal controller 26 via terminal modem 25
and the traffic lights 6a, 6b, 6c, and 6d are controlled.

Similarly, the traffic lights 13a and 13b on the approach road 2.

Command signals from the central control center 23 are the ends of 14a and 14b.

Floor modem 27, center modem 21, terminal modem 2
8 to the approach line signal controller 29 for control.

The road information board 5 of the main road 1 receives command signals from the central control center 28 via a terminal modem 30, a center modem 21, and a terminal modem 31.

It is transmitted to the controller 32 and controlled.

The road information boards 8 and 10 on the approach road 2 are controlled by a command signal from a central control center 23 transmitted to a controller 35 via a terminal modem 33, a center modem 21, and a terminal modem 34.

Variable speed sign9. , 11a, 15, command signals from the two central control stations 23 are sent to the terminal modem 36 and the center modem 2.
1. It is transmitted to the slave station 38 via the terminal modem 37 and controlled.

Variable label 11b. 12a and 12b are controlled by a command signal from a central control center 23 transmitted to a slave station 41 via a terminal modem 39, a center modem 21, and a terminal monidem 40.

For example, as a result of the sensing by the vehicle sensor 19, the traffic flow on the main road 1 is such that it is sufficiently smooth and safe to use only 3 out of 4 lanes, and the traffic flow on the main road 1 is such that it is sufficiently smooth and safe to use only 3 lanes out of the 4 lanes. If so, a command signal is issued from the central control center 23 based on this.

As a result of this signal, the road information board 5 of the main road 1 displays a message saying, ``From now on, the lanes will be reduced by 200 m. Drive in the 2nd, 3rd, and 4th lanes.'' Let me know.

The first lane dedicated traffic signal 6a of the traffic signal section 6 is red, indicating 2.
．． Third. 4th lane dedicated traffic light・8 b t 6 c t
6d displays blue, and the number of driving lanes is finally reduced to three.

and a road information board 8 and a road information board for the approach road 2;
The variable sign 11b displays a pattern indicating the lane reduction, and the variable sign 12a displays a pattern indicating a lane reduction for 200 m ahead, drive on the left.

12b displays whether or not it is possible to travel in each lane.
let them know that you are there.

In the first traffic signal section 13, the first lane dedicated signal 1'3a displays blue, and the second lane dedicated signal 13b displays red, and in the second traffic signal section 14, the first lane dedicated signal 14a displays blue, and the second lane dedicated signal 14a displays blue. The lane-specific traffic light 14b displays red, ultimately limiting the driving lane to the first lane 2a.

Further, variable speed signs 9.11a and 15 display safe speeds appropriate to the traffic volume.

``As a result, vehicles traveling on the main road 1 toward the merging section 3 are forced to move to the 2nd, 3rd, and 4th lanes 6a.
+60.6d and enter the first lane 2 of approach road 2.
A vehicle traveling on A smoothly moves to the first lane 1 of main road 1.
You can enter a.

That is, based on the sensing results of the vehicle sensor 19, each road 1
, 2, the traffic flow at the merging section 3 can be made smooth by keeping the travel lanes of each road 1, 2 constant in accordance with the traffic volume and flow of the roads 1 and 2.

[Brief explanation of the drawing]

The drawings show an embodiment of the road merging inflow control device of the present invention, FIG. 1 is an installation diagram of the road merging inflow control device on an expressway, and FIG. 2 is a control circuit block diagram of the road merging inflow control device. It is. 1... Main road, 2... Approach road,
3...merging section, 6,13.14...traffic signal.

Claims (1)

[Scope of Claims] 1. At a merging point between a main road having a plurality of lanes and an approach road that enters the main road, every fourth lane of the main road and the approach road before the merging point. In a road merging section inflow control device which is provided with a traffic signal at the main road and the approach road, there is provided a vehicle detection means for detecting traffic flow and traffic volume on the main road and the approach road, respectively, and a vehicle detection means for detecting the traffic flow and the traffic volume at the merging section based on the output of the vehicle detection means. A determination means for determining usable lanes. A road merging section inflow control device comprising: a control means for controlling a plurality of traffic signals installed for each lane of the main road and the approach road based on the output of the determination means.