JPS60124800A - Traffic signal control - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a traffic signal control method, and particularly to a traffic signal control method for a traffic signal installed at an intersection where a priority road and a non-priority road intersect.

[Prior art]

Figure 1 shows an example of an intersection where two traffic signals are arranged. road (hereinafter referred to as non-priority road), 3 is the intersection, 4
For example, it is a traffic signal control device, which includes -traffic signals 4Δ, 4Δ on the priority road 1 side, non-(σtraffic signals 4B on the priority road 2 side,
Controls the 4B traffic signal display (three lights of blue, yellow, and red). 5-1.5-2 are passing vehicles. Arrow heart, (
Shows the running direction of traffic 11 cars.

At such an intersection point 3, there are relatively many vehicles passing on the non-priority road 2, for example, during the daytime, the number of vehicles passing through the non-priority road 2 is 4A, 4A
, 4B, 4B are all ゛ζAbove-month is hlI'The cycle light is turned on every predetermined time. Pass through intersection 3 following the yellow-red traffic lights.

For example, at night when the traffic volume on non-priority road 2 is low, traffic signals 4△ and 48 on priority road 1 are controlled to a priority display mode in which the traffic signal display flashes yellow, and traffic signal 4B on non-priority road 2 is controlled. , 4B are controlled to a non-priority mode in which the traffic signal display flashes red.

When controlled to this priority display mode, priority road 1
” The second passing vehicle 5-1 passes through the intersection 3 while paying attention to the surrounding traffic conditions, and the passing vehicle 5-2 on the non-priority road 2 stops once before the intersection 3, confirms safety, and then passes through the intersection 3. It is legal to use intersection 3.

However, at this type of intersection, the priority/non-priority display mode is used on a daily basis, and due to driver's habit, the driver often ignores the above cautions and exceeds the legal speed limit on the priority road. A situation occurred in which traffic vehicle 5-1, which had been traveling at a speed of

[Summary of the invention]

This invention was made in view of the above-mentioned conventional problems, and a vehicle speed detector is installed in front of an intersection, giving priority
When the vehicle speed detector detects a speeding vehicle in the non-priority display mode, the above-mentioned (priority/non-priority display mode is canceled and the three-part control interrupts the first vehicle). i1j, 1ilii intersection runaway can be prevented, and the safety of intersection traffic can be improved by iR compared to conventional methods.
We would like to propose a traffic signal control method that can be used in a variety of ways.

[Embodiments of the invention]

FIG. 2 shows an embodiment of the present invention in a comb 7, and numerals 1 to 5 indicate the same parts as in FIG. 1. 6 is the vehicle speed detector. (, +AI': Road ahead 10)
It is placed a predetermined distance in front of the intersection point 3. This vehicle speed detector 6 detects when a vehicle passing on the priority road 1 exceeds the speed limit and outputs an excess speed detection No. 11 i. A control signal line 7 transmits an overspeed detection signal i output from the vehicle speed detector 6 to the traffic signal control device 4. The traffic signal control device 4 performs the above-mentioned conventional two-part control and priority/non-priority display control (flashing control), but furthermore, when it receives the above-mentioned overspeed signal i during priority/non-priority control mode, it performs three-part control. Interrupt section control mode''
,V-1! , cancel priority/non-priority control and use the transportation rental machine 4
A function is added to switch Δ, 4A, 4B, and 4B to three-part control for a predetermined period of time.

Therefore, when the overspeed detection signal i is generated, the traffic signals 4Δ and 4A change from flashing yellow to red, and the traffic signals 4B and 4B change from flashing red to blue, causing abnormally high speed driving. Unless C, the speeding vehicle 5-1 is forced to stop at the intersection 3.

The display mode based on this interrupt three-part control may be the normal cycle time three-part control mode, but the display changes from flashing yellow to red before the speeding vehicle 5-1 reaches the intersection 3. If the cycle time is different from the period of cycle 11.1 above, the cycle time will not be displayed in blue.

In the above embodiment, when the overspeed detection signal i is generated, both the traffic signals on the priority road 1 side and the non-priority road 2 side are switched to the three-part control mode, but the traffic signal 4A on the priority road 1 side is switched to the three-part control mode. , 4A to the three-part control mode, it is possible to prevent runaway intersections.

FIG. 3 illustrates another embodiment of the present invention in which the intersections of a priority road and a non-priority road are continuous.
'I road 3-1 is the intersection where the non-priority road 2-1 intersects with the priority road 1, and 3-2 is the intersection where the non-priority road 2-2 intersects with JW road 1p ahead. 4Δ-1, 4Δ-1, 4B-1,
4B-1 is a traffic control machine at the intersection 3-1, and has a traffic signal side fJIl device '+I';:41m' which performs the same control 'rm' operation as the traffic signal control device 4 in Fig. 2. 52, L,
In game; 1j control. 4Δ-2,4Δ-2,41u-
2,41 U-2 is the traffic at the intersection 3-2 (, No. 3 is controlled by the traffic signal control device 4-2, which has the same control operation as the traffic signal control device 4-1). ,.(
j-1, 6-2 are vehicle speed 9 detectors (, intersection 3-1, 3-2, respectively) 11 predetermined 1〆1!1 season II +, 4. 2 are installed, and when a speeding vehicle is detected, a traffic signal 11i is sent respectively to the speeding detection signal i.
1J gα11 device 4-1.4-.

2 through signal lines 7-1 and 7-2 to transmit "C".

FIG. 4 shows vehicle speed detector 6-1. This example shows a case where there is a restriction on the installation location of G-2 and it has to be placed close to intersection 3-1, 3-2, or when the intersection is close. In such a case, the overspeed detection signal i of the vehicle speed detector 6-1 is activated to avoid danger.
Instead of controlling the traffic signal at intersection 3-■, the traffic signal at the next intersection 3-2 is controlled. The same applies to the vehicle speed detector 6-2.

In the above embodiment, the overspeed detection signal is transmitted through the control line, but an optical fiber or wireless transmission means may also be used.

In each of the above embodiments, vehicle speed detectors are installed only on one side of the priority road, but if the road is not one-way, they are installed on both sides of the road.

In addition, if the traffic signal is within a wide area traffic control area, in step 4, an excessive speed detection signal is sent to the traffic control center, and after the traffic control center performs the necessary processing, the traffic signal is sent to the traffic signal from the traffic control center. The configuration is configured to control.

〔Effect of the invention〕

As explained below, this invention
i Install a vehicle speed detector, and if the vehicle speed detector is 0 or the traffic signal is a priority/non-priority display mode 1" 4.Z〆p
〕11,1, If a speeding vehicle is detected in front of the intersection, the three-part control mode is immediately interrupted.
As a result, it is possible to force speeding vehicles to stop at the intersection, preventing speeding vehicles from driving out of control at the intersection, preventing traffic accidents from occurring, and reducing the number of traffic at intersections compared to the past. Safety can be increased.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram for explaining an intersection where a conventional traffic signal control method is implemented, FIG. 2 is a schematic diagram for explaining the present invention in detail, and FIGS. 3 and 4 is a schematic diagram of an intersection for explaining another embodiment of the present invention. In the figure, 1-road j becomes a priority road, 2.2-1.
2-2 = Road that becomes a non-recovery road, 3.3-1.3-2
-Intersection, 4.4-1.4-2...Traffic signal control device, 4A, 4
B-Traffic signal 1. 6.6-1.6-2 Vehicle speed detector. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa

Claims (1)

[Claims] (1) Detect and output a passing vehicle traveling at a speed exceeding a predetermined speed on one of the roads a predetermined distance ahead of the intersection point where one road that is a priority road and the other road that is a non-priority road intersect. A vehicle speed detector is arranged, and at the same time as the one road-side traffic signal at the intersection or the intersection behind the intersection is controlled to a priority display mode, the other road-side traffic signal is set to a non-priority display mode. A traffic signal control method characterized by interrupting a three-light control mode when the traffic signal is being controlled.