JPS6025000B2 - traffic signal control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traffic signal control device for controlling traffic on a one-lane road.

On a two-lane road, only one lane may be open due to construction or other reasons. Also, two lanes in both directions are common sense, but if the traffic demand is small, if the road can be made into one lane in both directions and cars can be controlled and passed smoothly, road construction costs will be reduced and economical. It is true. The present invention provides a traffic signal control device that efficiently controls traffic on the above-mentioned roads, and embodiments thereof will be described below.

FIG. 1 shows the relationship between a road, a signal lamp, and a traffic signal that controls the operation of the signal lamp. 1 is the road,
la (la,, la2) is a two-lane section connected to a one-lane section, lb (lb,, IQ, 1 wide) is a one-lane section, and lc (
lc,, lc2) is the vehicle exchange section [passing section], 2
(2a to 2f) are signal lamps, and 3 is a traffic signal.

In this configuration, the signal lamps 2a, 2d, and 2e have the IG (blue), IY (yellow), and IR (red) signal cycles shown in FIG. 2, and at the same time, the signal lamps 2b, 2c, and 2f are shown in FIG. Each signal light device 2 is connected to a traffic signal 3 so that it operates in the signal cycle of 2R (red), 2G (blue), and 2Y (yellow).
By controlling the above, at the first timing IG, up traffic in odd-numbered one-lane sections and down-traffic in even-numbered one-lane sections are carried out.

Further, at the second timing 2G, down traffic in even-numbered one-lane sections and down-bound traffic in odd-numbered one-lane sections are performed. Therefore, the relationship between the display of the signal lamp and the running of the car is as shown in Fig. 3, and the car can run smoothly without having to wait for a long time.

In the figure, dotted lines indicate green lights, solid lines indicate red lights, and arrows indicate the direction of travel of the vehicle. Also, when constructing roads, 1
It is advantageous in practical terms because it is not mainly used for lane roads. By the way, in the configuration shown in FIGS. 1 to 3, if more than a certain number of cars enter the one-lane section during green time from the two-lane section la,, la2, they will pass each other, and the section lc ，
, lc2 may not be accommodated.

Figure 4 is a diagram that solves this problem, and shows signal lamps 2a to 2.
f is connected to a traffic signal 3, which is a central signal control device, via a traffic control device 4 (4a to 4d).

In addition, the traffic controllers 4a and 4d are equipped with vehicle detectors d, q, so that regardless of the signal from the traffic signal 3, when the number of passing vehicles reaches a certain amount, the signal display changes from green to red. ing. Figures 5 and 6 show the relationship between traffic signals and passing vehicles. A little, case) is shown.

Note that FIG. 5A and FIG. 6A show the pulses generated for each vehicle, and FIGS. 5A and 6B show the current state of the signal. Although only the overall configuration is shown in FIG. 4, the outputs of the vehicle sensors d, d4 are transmitted to the traffic controllers 4a, 4d.
When the count value of the counter (not shown) reaches a certain value, a command to switch the display from blue to red is issued in place of the step signal set by a timer, etc. It has means (not shown) for emitting.

As is clear from the above description, the present invention is useful because it prevents cars from passing each other and from accumulating too much in the area, allowing vehicles entering from both sides to pass smoothly.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of a traffic signal control device according to an embodiment of the present invention, Fig. 2 is a switching diagram of the signal lamp display, Fig. 3 is a state diagram of the signal lamp display and vehicle running, and Fig. 4 is a diagram of the traffic signal control device according to an embodiment of the present invention. FIG. 5 is a system diagram of another embodiment, and FIGS. 5 and 6 are diagrams showing the relationship between passing vehicles and signal indications. 1...road, la...2 lane section, l
b...1 lane section, 2...signal lamp, 3...
...Traffic signal, 4...Traffic control device, d,
~4...Vehicle detector. Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 Figure Dimensions

Claims (1)

[Scope of Claims] 1. At least one passing place is provided in the middle of a one-lane road, and two- or three-way vehicles are installed at both ends of each one-lane section of the road.
A signal light device is provided, and the signal lights are switched at least at four timings of 1G, 1R, 2G, and 2R in order at all times, and at timing 1G, the odd numbered (even numbered) one lane section is set. Up traffic and even numbers (
The signal lamp corresponding to the down traffic in the odd (odd) 1 lane section is turned green, and at timing 2G, it corresponds to the up traffic in the even (odd) 1 lane section and the down traffic in the odd (even) 1 lane section. In addition to turning the traffic lights green, all traffic lights other than blue lights turn red, and when a certain number of cars enter or are entering the one-lane road, the light is forcibly switched from blue to red. A traffic signal control device featuring: 2. The signal lamp installed at the entrance to a one-lane road is one that is set in a green state based on the detection information of vehicles entering or entering the one-lane road, separately from other signal lamps. 2. The traffic signal control device according to claim 1, further comprising switching means for changing from blue to red before the traffic signal changes.