JP2849066B2 - Road traffic signal system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road traffic signal system for regulating and organizing traffic of vehicles and the like at intersections of roads, and more particularly to a new and improved road traffic signal system.

[0002]

2. Description of the Related Art Conventionally, road traffic signals for regulating and organizing traffic of vehicles and the like at intersections and the like are usually provided with traffic lights.
It is composed of a blue light, a yellow light, and a red light, and is arranged at a position such as on a road. Such a road traffic light changes blue, yellow, and red in a preset time, and in particular, the time when the color changes from blue to yellow varies. For example,
Normally, at traffic lights at intersections, there are a blue signal light, a yellow signal light (for 4 seconds), a red signal light, and a blue arrow signal light, and a blue signal, yellow signal, and red arrow signal light The time depends on each intersection,
In particular, a left-turn blue arrow signal often changes in a short time.

On the other hand, at an intersection or the like, despite the presence of a traffic signal, the vehicle cannot be stopped immediately before the intersection due to the location of the blue traffic light, the road width at the intersection, and the traveling speed of the vehicle. It is often observed that even a red light enters an intersection. that time,
Drivers often approached at higher speeds, and furthermore, property damage and personal injury led to major accidents.

[0004] In particular, in the case of a push-button type traffic light, a blue signal usually takes a long time, and the driver himself is likely to neglect. For this reason, pedestrians often jumped without being able to respond to sudden changes in traffic signals, and often collided with oncoming vehicles in the oncoming lane in an attempt to avoid traffic accidents. Even if the vehicle can be stopped, rear-end collisions by subsequent vehicles have occurred frequently.

[0005] Furthermore, recent vehicles are highly sealed and, in addition, the development of audio equipment products is particularly rapid.
For this reason, the driver in the car often does not hear the sound of the siren of the emergency vehicle due to the sound of the music, and often causes a contact accident or a collision accident near the intersection.

[0006] In addition, frustration waiting for a signal, or
It often sounds a horn at a car that does not start when the signal turns blue. As described above, the conventional road traffic signal does not always fulfill its function, and in some cases, causes traffic congestion, and also occurs with the road traffic signal. Insurance companies pay more than 20 trillion yen a year for accidents.

[0007]

As described above, in the conventional traffic signal for road traffic, the vehicle enters the red light intersection depending on the position, speed, etc. of the confirmation of the light of the blue signal. , Which often led to major accidents. In addition, the blue arrow signal of a right turn often changes in a short time, especially at a large intersection, a vehicle enters with a red signal, causing a collision accident with an oncoming vehicle in the traveling direction,
Furthermore, a major accident involving pedestrians occurred.
In particular, driving when turning right was very unstable for the driver, leading to a serious accident involving not only oncoming vehicles but also rear-end vehicles.

Accordingly, an object of the present invention is to solve the above problems in the conventional traffic signal for road traffic as described above, and to solve these problems, especially at intersections and the like, so that the driver can change the signal more. It is intended to provide a new and improved road traffic signal system that is easy to understand and that can safely and reliably regulate and organize traffic.

That is, according to the present invention, in order to achieve the above object, a blue light, a yellow light, and a red light are arranged, and a red light is provided above the blue light, the yellow light, and the red light.
Rutotomoni fitted with a red revolving light to display while rotating,
A traffic light having a blue arrow light attached below the red rotating light, and a lighting device for controlling the traffic of each of these lights by a control device. <br/> We set up a sensor to detect coming,
And the control device, wherein when from the blue light changes to said yellow light, a few seconds, after blink the blue light blue
Turn on the color arrow light, and then further turn on the blue arrow light.
It displayed so as to light up for a few seconds, when changes to the blue light from the red light for a few seconds, Ru blink the red light
It displayed as, and when said sensor senses the proximity of the emergency vehicle, and displays while rotating the red revolving light
A traffic signal system for road traffic, characterized by having such a configuration, is proposed.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, FIG. 1 shows an overall configuration of a road traffic signal system according to one embodiment of the present invention. According to this road traffic signal system, the traffic light 10
, A yellow light 12 and a red light 13. Further, a so-called red rotating light 15, which rotates and displays a red light, is provided above the center of each of these three colored lights, and a blue arrow light 16 is provided below the right side thereof. FIG. 2 is a plan view of the traffic light 10.

A so-called control device 20 is connected to the traffic light 10, and controls the lighting of each of the color lamps. In this example, the control device 20 is configured by, for example, a microcomputer, that is, the control device 20 includes a central processing unit (CPU) 21,
A storage device 22 including a ROM as a non-volatile storage device storing a predetermined program and a RAM as a storage device for calculation, a control unit 25 including an input / output device (I / O) 23, It includes a so-called lighting drive circuit 26 for supplying power to the traffic lights 10 and lighting them according to a command from the CPU 21 of the control unit 25. Further, near the intersection where the traffic light 10 is arranged, an emergency vehicle proximity sensor 30 for detecting the proximity of an emergency vehicle such as an ambulance or a fire engine is provided. It has been input to the device 20. The sensor 30 may be, for example, a microphone. An audio signal from the microphone may be used for the audio analysis circuit 2 provided in the control device 20.
7 to recognize the emergency car siren,
It becomes possible to detect the proximity of an emergency vehicle. Or,
It is also possible to transmit a radio wave of a predetermined frequency from the emergency vehicle and receive it to detect the proximity of the emergency vehicle.

Next, the operation of the above-described road traffic signal system according to the present invention will be described. In FIG.
A control device 20 that constitutes the road traffic signal system;
In particular, the operation of the control unit 25 is shown as a so-called flowchart. First, when the operation starts,
A blue signal is turned on (step S101). Thereafter, the period t1 during which the blue signal is turned on is a predetermined period (t1 =
(60 seconds) has elapsed (step S10).
2) If the time has not elapsed, the process returns to the step S101 in which the blue signal is turned on. If the time has elapsed, the blue signal is blinked next (step S103). As above,
The blinking of the blue signal is continued for t2 = 4 seconds (step S1).
04) Then, the yellow signal is turned on (step S10).
5). The lighting of this yellow signal is performed in the same manner as described above, and t3
= 4 seconds (step S106), and then the red signal is turned on (step S107). In the same manner as described above, this red signal is kept on for a period t4 = 60 seconds (step S108), and finally, this red signal is kept blinking for a period t5 = 4 seconds (steps S109 and S110). Returning to step S101, the above steps are repeated. That is, according to the road traffic signal system according to the present invention, the blue signal (60 seconds) and the blue blinking signal (4
Second), yellow signal (4 seconds), red signal (60 seconds), and red blinking signal (4 seconds) total time (132 seconds) is sequentially repeated.

When the emergency vehicle proximity sensor 30 and the voice analysis circuit 27 detect the approach of the emergency vehicle to the intersection, the controller 20 sets the red rotating light 15 of the traffic light 10 irrespective of the above operation. Rotate while blinking. For example, when an emergency vehicle approaches within a few hundred meters of the intersection, the sensor 30 is activated by radio waves or sound waves emitted from the vehicle, and the red rotating lights of all the traffic lights 10 provided at the intersection are rotated, and the driver near the intersection is driven. To inform the approach of emergency vehicles. As a result, the driver who is listening to music in the airtight interior of the vehicle can be informed of the approach of the emergency vehicle without any collision, so that the driver can drive safely. Become.

That is, according to the above-described road traffic signal system of the present invention, when changing from a green signal to a yellow signal, the blue signal flashes for several seconds, then changes to a yellow signal, and further changes from a red signal to a blue signal. Also when changing to, the red flashes for a few seconds and then returns to the blue signal repeatedly. According to the operation of the traffic signal system for road traffic according to the present invention, the driver confirms the blue traffic light at the intersection and approaches the intersection. On the other hand, when the traffic light changes to the yellow traffic light, the blue traffic light blinks blue. To warn that it will subsequently change to a yellow traffic light. So the driver stopped speeding up,
The vehicle enters a deceleration state and can be safely stopped at a red signal. Further, at that time, the following vehicle can also be stopped in the same manner, and collision due to sudden stop of the preceding vehicle can be prevented.

Here, the effect of the road traffic signal system according to the present invention will be described more specifically with reference to the graph of FIG. In this graph, the vertical axis shows the vehicle speed, and the horizontal axis shows the mileage to stop. For comparison, the stop distance in the conventional traffic signal system is A, and the new system according to the present invention is shown. The stop distance at the traffic signal is indicated by B. By the way, in the new system according to the present invention, the blinking blue is set to 4 seconds as in the above example. On the other hand, in the conventional traffic signal system, the total time (132 seconds) of the blue signal (60 seconds), the yellow signal (4 seconds), and the red signal (64 seconds)
Is set to

By the way, generally, for example, a speed of 60 km
The stopping distance of the vehicle running at / h needs to be about 50 m. This includes an idle running distance of about 20 m. This idle distance increases when the driver is tired. In addition, when the road is wet due to rain, when the load is heavy, or when the tires are extremely worn, the stopping distance should be extended to about twice (according to the "traffic rules" supervised by the Metropolitan Police Department of Transportation). Sometimes.

According to the new system for road traffic light according to the present invention described above, when the green light changes to the yellow light, the blue light flashes for several seconds to warn the driver, which is also clear from this graph. In this way, the driver can foresee that the signal will turn yellow from about 66 m before driving at 60 km / h in preparation for the yellow signal by the flashing blue light, and can enter the deceleration state. Even in the case of the condition, it can be safely stopped. On the other hand, in the conventional traffic signal system, when the traffic light turns yellow at a distance of 50 m or less before the traffic light, the vehicle cannot stop just before the intersection and enters the intersection.

Further, the relationship between the traveling speed of the vehicle and the confirmation position just before the signal at which the vehicle can be accurately stopped at the stop position when the blue signal is blinked (for 4 seconds) is as follows.
It is shown in the following table.

[Table 1]

According to the road traffic signal system of the present invention, the driver stopped at the red traffic light
By blinking the next red signal, the change of the traffic light to the next blue signal is known in advance without any irritation, and preparations are made for starting. As a result, a safe and smooth vehicle flow can be created, and congestion can be reduced. At this time, since the blinking of the blue and red signals is performed within the lighting time of the blue and red signals so far, there is no problem such as traffic congestion.

Furthermore, the driver must avoid danger,
Often speeding up and approaching an intersection. Further, the blue arrow signal (blue arrow light 16) is often used for a right turn signal, and conventionally changed in a short time in many cases. Then, with the blue arrow signal, the driver had to perform a very unstable driving, such as turning right, so that the driver could not cope with the sudden signal change and often entered the intersection with a red light. .

Therefore, in the road traffic signal system according to the present invention, even when the blue arrow signal (blue arrow light 16) is turned on, the blue arrow light 16 is turned on before the next yellow signal. Blinks to warn the driver that the next signal will be changed. According to this, the driver can accurately determine whether the vehicle is accelerating or decelerating from the position, and thus can safely stop at the subsequent red signal. Also, at that time, the following vehicle has also confirmed that the blue arrow light 16 is blinking in blue, so that it can safely stop without collision.

As can be seen from the above description, if it is known that the signal changes at an early stage due to the blinking blue light, it is possible to reduce the accident such as an intersection rather than halving it. Further, by utilizing the above advantages, a right turn vehicle can be prioritized at a yellow traffic light, and a collision accident with a straight vehicle can be reduced. That is, a straight-ahead vehicle does not need to consider a rear-end collision with a following vehicle. (However, it is necessary to revise the Road Traffic Law to allow only right turns at yellow traffic lights.)

Also, even if the signal is normally blue, such as a push button signal, the driver can be informed of the pedestrian's crossing at an early stage by blinking blue, and the vehicle can decelerate and stop safely at a red signal. . Further, since the blinking signal can be easily confirmed even at night, it can be applied to any signal by adjusting the blinking time.

Further, according to the new system described above, the traffic signal currently used can be used as it is, that is, it can be used if only the system is incorporated. Therefore, accidents at intersections and push-button signals can be halved at low cost. In addition, if the accident is halved, material loss, that is, the work of destroying or destroying a vehicle caused by a traffic accident, can be saved, and precious life can be saved. The company can pay a lot of money, which can be as simple as 10 trillion yen a year.

[0025]

As is apparent from the above detailed description, the road traffic signal system improved according to the present invention eliminates the problems of the conventional road traffic signal, that is, flashes blue. This makes it possible for the driver of the vehicle entering the intersection to recognize the change in the signal at an early stage, so that the change in the signal can be easily recognized by the driver, thereby ensuring safe and reliable traffic. It is possible to exhibit socially superior effects that it becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire configuration of a road traffic signal system according to one embodiment of the present invention.

FIG. 2 is a plan view of a traffic light constituting the road traffic signal system of the present invention.

FIG. 3 is a flowchart illustrating the operation of the road traffic signal system of the present invention.

FIG. 4 is a graph showing an effect of the road traffic signal system of the present invention in comparison with a conventional technology.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Traffic light 11 Blue light 12 Yellow light 13 Red light 15 Red rotating light 16 Blue arrow light 20 Control device 25 Control part 30 Sensor

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08G 1/095 G08G 1/087

Claims (1)

(57) [Claims] 1. A blue light / yellow light / red light is disposed, and a red light is provided above the blue light / yellow light / red light.
Rutotomoni fitted with a red revolving light to display while rotating,
A traffic light having a blue arrow light attached below the red rotating light, and a lighting device for controlling the traffic of each of these lights by a control device. <br/> We set up a sensor to detect coming,
And the control device, wherein when from the blue light changes to said yellow light, a few seconds, after blink the blue light blue
Turn on the color arrow light, and then further turn on the blue arrow light.
It displayed so as to light up for a few seconds, when changes to the blue light from the red light, a few seconds, Ru blink the red light
Uni displayed, and, when the sensor senses the proximity of the emergency vehicle displays while rotating the red revolving light
A traffic signal system for road traffic, characterized in that: