JP2003296881A - Device and system for supporting preferential passing of emergency vehicle and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for supporting route passing preferentially by correcting the time to pass respective traffic lights on the traveling route of an emergency vehicle matched with the speed change of the emergency vehicle. <P>SOLUTION: The server 100 of this invention comprises a traveling speed calculation part 112 for calculating a traveling speed on the basis of a route to a destination and a traveling position from the emergency vehicle 120 loaded with a GPS function, a passing time calculation part 114 for calculating the time to pass the traffic light on the route beforehand, a display control part 118 for controlling the traffic light so as to give the passing priority matched with the time to pass the traffic light, and a speed determining part 110 for determining whether or not the calculated traveling speed is within a traveling speed category corresponding to the immediately before traveling speed calculated immediately before. When the traveling speed is not within the traveling speed category by the decision, the time to pass the traffic light on the route is calculated again by the passing time calculation part 114 and the display of the traffic light is controlled so as to give the passing priority matched with the calculated passing time by a display control part 118. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for providing priority traffic assistance to an emergency vehicle, and in particular, correcting the traffic time of each traffic signal on the traveling route of the emergency vehicle in accordance with the speed change of the emergency vehicle, BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency vehicle priority traffic assistance device, system, and method that preferentially provide route traffic assistance.

[0002]

2. Description of the Related Art Conventionally, as a technique for supporting priority traffic of an emergency vehicle such as an ambulance or a police car, for example, Japanese Patent Laid-Open No. Hei 07 (1998) is used.
No. 306994 (hereinafter referred to as Document 1) and Japanese Patent Laid-Open No. 2000-163699 (hereinafter referred to as Document 2) are disclosed.

As described as the problem, Document 1 discloses a technique that realizes the shortest arrival time of an emergency vehicle at a destination by controlling a traffic light during a traffic jam. Specifically, the shortest distance to the destination is determined more accurately by simulating the priority control of the traffic signal during a traffic jam in advance.

Further, in Reference 2, by using a function of detecting the current position such as GPS, an indicator or an alarm in the traveling route of the emergency vehicle is caused to display or report the approach of the emergency vehicle in advance, thereby A system capable of accelerating the evacuation behavior of another vehicle and, as a result, supporting the safe and smooth running of the emergency vehicle is shown.

[0005]

However, in the above-mentioned document 1, the speed of the emergency vehicle is not particularly considered at the time of determining the traveling route. Since the speed change with time occurs in the emergency vehicle, it is impossible to perform priority traffic in consideration of the time at which the emergency vehicle will actually pass each traffic signal when controlling the traffic signal. Further, in the above-mentioned document 2, a command room for supporting priority running of the emergency vehicle is provided, and from this command room, a display or an alarm installed on the road is used to notify the approach of the emergency vehicle. Since it is a system, it is not possible to reliably give priority to the emergency vehicle itself at an intersection where a traffic signal is installed, which is the most difficult to pass.

The present invention has been made in view of the above problems, and an object of the present invention is to give priority to the route by correcting the traffic time of each traffic signal on the traveling route of the emergency vehicle according to the speed change of the emergency vehicle. An object of the present invention is to provide an emergency vehicle priority traffic assistance device, system, and method for performing traffic assistance.

[0007]

[Means for Solving the Problems] (1) In order to achieve the above object, an emergency vehicle priority traffic assistance device according to the present invention is derived from an emergency vehicle equipped with satellite positioning means by the satellite positioning means. Receiving means for receiving information of a route to a destination and position information of the emergency vehicle via a mobile communication network, and calculating a traveling speed of the emergency vehicle based on the position information and the reception time thereof. In order to give priority to the traveling speed calculation means, the passage time calculation means for calculating in advance the passage time of the emergency vehicle of each traffic signal on the route, and the passage time of each of the traffic lights of the emergency vehicle in accordance with the passage time. Display control means for performing display control of display lamps of the respective traffic lights, and a predetermined speed at which the traveling speed calculated by the traveling speed calculation means corresponds to the immediately preceding traveling speed calculated immediately before it. A traveling speed judging means for judging whether or not the traveling speed is within the traveling speed category set by the width, and if the traveling speed is not within the traveling speed category by the judgment, The traffic time calculating means pre-calculates the traffic time of the emergency vehicle of each traffic signal on the route again, and the display control means adjusts the traffic time so as to prioritize the traffic according to the calculated traffic time. The display control of the display lamp is performed.

(2) In addition, the priority traveling assistance system for an emergency vehicle according to the present invention includes information on a route from an emergency vehicle equipped with satellite positioning means to a destination derived by the satellite positioning means, and the emergency vehicle. Traffic time receiving means for receiving the position information of the vehicle via a mobile communication network, and calculating in advance the traffic time of the emergency vehicle of each traffic signal on the route,
Priority traffic of an emergency vehicle provided with a communication device having display control means for performing display control of display lamps of the traffic lights so as to give priority to the traffic according to the traffic time of the traffic lights of the emergency vehicle. In the assistance system, the emergency vehicle includes a traveling speed determination means for determining whether or not the traveling speed is within a traveling speed category set in a predetermined speed range corresponding to the traveling speed, and If it is detected that the traveling speed is not within the traveling speed category, traveling speed information transmitting means for transmitting traveling speed information associated with the detection to the communication device via the first mobile communication network. The communication device calculates the passage time of the emergency vehicle of each traffic signal on the route again based on the traveling speed information transmitted by the traveling speed information transmitting means by the traveling time calculation means. And, by the display control means, and performs the display control based on the traffic time issued the calculated.

(3) Further, in the emergency vehicle priority passage support system of (2), the emergency vehicle can communicate with the traveling speed information transmitting means via the first mobile communication network. Communication determination means for determining whether or not,
If the determination detects that communication is not possible,
Further comprising a switching means for switching communication to a second mobile communication network different from the first mobile communication network, wherein the traveling speed information transmitting means, if the switching is performed by the switching means, The traveling speed information is transmitted to the communication device via the second mobile communication network.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a block diagram for explaining an emergency vehicle priority passage assistance device according to the present invention and a network system including the same in the first embodiment. FIG. 2 is a flowchart for explaining the operation of the priority vehicle traffic assistance device of the emergency vehicle of FIG. In the second embodiment, FIG.
FIG. 1 is a block diagram for explaining a priority traffic assistance system for emergency vehicles according to the present invention. FIG. 4 is a flowchart for explaining the operation of the priority vehicle traffic assistance system of the emergency vehicle of FIG. FIG. 5 is a block diagram for explaining that priority traffic assistance for emergency vehicles is further provided by using a message bulletin board in the fourth embodiment.

(First Embodiment) With reference to FIG. 1, an explanation will be given of the configuration of an emergency vehicle priority traffic assistance device according to the present invention and a network system including the same.

In the network system 10, a priority traffic support device (hereinafter referred to as a server) 100, an emergency vehicle 120, and a traffic light 140 can communicate with each other via a wireless communication network which is a mobile communication network.

The emergency vehicle 120 comprises a GPS (Global Positioning System) navigation device 122 equipped with a satellite positioning system and a travel information transmission device 124.

The GPS navigation device 122 receives a radio wave indicating information about the position and time information from the satellite, and measures the current position information of the emergency vehicle 120 based on the received radio wave. The traveling information transmission device 124 is used for the emergency vehicle 12
The information of the route from 0 to the destination derived by the GPS navigation device 122, the measured position information of the emergency vehicle, and the measurement time of this position information are transmitted to the server 100 via the wireless communication network.

The traffic light 140 includes a lighting device 142 including a display lamp for guiding traffic, and a traffic light display control device 1.
It is configured to have 44. Although there are a plurality of traffic signals, the traffic signal 140 here is used as a general term for traffic signals on the route where the emergency vehicle is scheduled to travel, for convenience. The traffic light display control device 144 is a device for controlling the turn-on / turn-off display of the lighting device 142, and the turn-on / turn-off is controlled according to an instruction received from the server 100 via the wireless communication network.

The server 100 is a CPU (Cent) that performs calculation and control via an internal bus 102 that transfers data.
(ral processing unit) 106, a communication interface 104 that enables communication with wirelessly transmitted information, an input / output control unit (not particularly shown), a priority passage support processing unit 11
0s are connected to each other. The priority passage assistance processing unit 110 includes a traveling speed calculation unit 112, a passage time calculation unit 114, a speed determination unit 116, and a display control unit 118.
Is configured.

The communication interface 104 receives route information from the emergency vehicle 120 to the destination and position information of the emergency vehicle 120 via the mobile communication network.

The traveling speed calculation unit 112 calculates the traveling speed of the emergency vehicle 120 based on the received route information and position information and the reception time of receiving these information. This traveling speed is determined by the route information and the position information being transmitted from the emergency vehicle 120 continuously (every predetermined time period or irregularly to some extent), and particularly between two point positions detected from the position information. It is calculated by the distance and the reception time interval.

The transit time calculating unit 114 preliminarily calculates the transit time of the emergency vehicle of each traffic signal on the route of the received route information.

The speed determination unit 116 is a traveling speed calculation unit 11
It is determined whether or not the traveling speed calculated by 2 corresponds to the immediately preceding traveling speed calculated immediately before (that is, one period before) within the traveling speed category set in a predetermined speed range. This is as follows, for example. Driving speed category from 0km / m to a predetermined speed range of 3km / m
When set for each h, it is assumed that the emergency vehicle is traveling at 31 km / h. In this case, under this 3 km / h width setting, the current traveling speed of 31 km / h is 30 to 33
It belongs to the traveling speed category of km / h. After this (that is, after the 1st period), if the emergency vehicle raises the current traveling speed to 50 km / h due to some influence, the traveling speed category is 48 to 51 km / h.
It has been changed to the traveling speed category of h. The speed determination unit 116 continuously monitors the change in the traveling speed category and determines whether or not the change has been made.

The display control unit 118 controls turning on / off of the lighting device 142 of each traffic light 140 in accordance with the traffic time of each traffic light 140 on the traveling route of the emergency vehicle 120 so as to give priority to the traffic.

Next, referring to the flow chart of FIG. 2, the operation of the priority traffic assistance of the emergency vehicle according to the present invention using the server 100 of FIG. 1 will be described. Here, the traveling speed category (0 k
The description will proceed assuming that the speed range from m / m to every 3 km / m) is preset.

Communication interface 10 of server 100
4, the emergency vehicle 120 at 14:00:30.
Then, the route information of the planned traveling and the position information of the current traveling are received via the wireless communication network (step S201). The traveling speed calculation unit 112 acquires the position information during traveling of the received route and the reception time thereof (step S202).

Then, in the communication interface 104 of the server 100, at 14:00:35, from the emergency vehicle 120, the route information about the route to be traveled and the position information currently being traveled are transmitted via the wireless communication network. It is received again (step S203). The traveling speed calculation unit 112 acquires the position information during traveling on the received route (route) and the reception time thereof (step S20).
4).

The traveling speed calculation unit 112 executes the above step S
Based on the information acquired in 202 and S204, the traveling speed of the emergency vehicle is calculated (step S205). Here, it is assumed that the traveling speed of 31 km / h (hereinafter referred to as the first traveling speed) is calculated. Traveling speed calculation unit 112
Performs a process of storing the calculated information in a storage device (not particularly shown) until at least the next calculation (that is, after one period) is performed.

The transit time calculation unit 114 uses the above step S.
Based on the traveling speed 31 km / h (first traveling speed) calculated in 205, the presence / absence of each traffic signal 140 on the traveling route is confirmed and its identification processing is performed.
40 scheduled passage times are calculated (step S206).

The display controller 118 collates the calculated scheduled time with the time acquired in step S204, and determines whether or not there is a predetermined time interval, for example, a time interval exceeding 40 seconds. (Step S207). Here, if the predetermined time interval or less is detected, the display control unit 118 sends a compulsory change command of the turn-on / off display to the traffic signal display control device of the traffic signal scheduled to pass by wireless communication. It is transmitted via the network (step S20)
8). On the contrary, if it is detected that the predetermined time interval is exceeded, the display control unit 118 does not issue the change command.

Further subsequently, the above-mentioned steps S203, S
It is assumed that the same processing as 204 is performed at 14:00:40 (step S209), and at this time, 50 km / h (hereinafter referred to as the second traveling speed) is calculated as the traveling speed.

The speed determination unit 110 reads the first and second traveling speeds and compares them with preset traveling speed categories to determine whether they are in the same category (step S210). If it is detected that they are in the same category, it is recognized that there is no particular change in the traveling speed of the emergency vehicle 120, and each traffic signal 1 by the display control unit 118 is recognized.
The command to change the display to 40 is not issued.

If it is detected in the above step S210 that the vehicle is not in the same category, the passage time calculation unit 114
Is the traveling speed 50k calculated in step S209.
Based on m / h (second traveling speed), the presence / absence of each traffic signal 140 on the traveling route is confirmed and its identification processing is performed, and the scheduled passage time of each traffic signal 140 is calculated (step S211).

The display control unit 118 collates the newly calculated scheduled time with the time acquired in step S209 to determine whether there is a predetermined time interval, for example, a time interval exceeding 40 seconds. Judgment (step S21
2). Here, if the previous term (step S207: 1 above
Even if the time interval of 50 seconds is calculated with respect to the predetermined time interval of 40 seconds at 4:00:35, the traveling speed of the emergency vehicle 120 has risen to 50 km / h. Although it is the current period (14:00:40), a predetermined time interval of 40 seconds or less will be detected. If the predetermined time interval or less is detected, the display control unit 118 again issues a compulsory change command of the turn-on / off display to the traffic signal display control device of the traffic signal scheduled to pass through the wireless communication network. Send (step S21
3).

As described above, by using the priority traveling assistance system for an emergency vehicle according to the present invention, it is possible to perform the iterative correction of the transit time of each traffic signal on the traveling route in consideration of the speed change of the emergency vehicle. As a result, it is possible to support the smooth priority passage of emergency vehicles, and it becomes possible to consider the surrounding traffic because the passage time is clear.

(Second Embodiment) Next, referring to FIG.
A configuration of a priority traffic assistance system for an emergency vehicle according to the present invention and a network system including the same will be described.

In the network system 30, a device (hereinafter, referred to as a server) 300, an emergency vehicle 320, and a traffic light 340 that perform various processes for priority traffic support are respectively provided via a wireless communication network which is a mobile communication network. Can communicate.

The emergency vehicle 320 includes a GPS navigation device 322 equipped with a satellite positioning system and a transmitter 3.
24 and a traveling speed determination device 326. Here, the GPS navigation device 322 is the above-mentioned device 122, and the traffic light 340 is the above-mentioned traffic light 140.
And have the same function.

The traveling speed determination device 326 compares the traveling speed of the immediately preceding (first period) with the traveling speed of the current period while monitoring the traveling speed of the own vehicle 320, and the traveling speed of the current period is a predetermined speed in the previous period. It is determined whether each of the widths is within the traveling speed category set (see the above description of the traveling speed category).

The transmitting device 324 transmits the traveling route information and the position information calculated by the GPS navigation device 322 to the server 300, and at the same time, the traveling speed determining device 3
When it is detected by the determination of 26 that the traveling speed of the current period is not within the traveling speed category of the previous period, the traveling speed information of the current period is transmitted to the server 300 via the wireless communication network.

The server 300 is a CPU (Cent) that performs calculation and control via an internal bus 302 that transfers data.
ral Processing Unit) 306, a communication interface 304 that enables communication with wirelessly transmitted information, an input / output control unit (not particularly shown), a priority passage support processing unit 31.
0s are connected to each other. The priority passage support processing unit 310 includes a passage time calculation unit 312 and a display control unit 314.

The transit time calculation unit 312 preliminarily calculates the transit time of the emergency vehicle 320 of each traffic signal 340 on the route of the route information to be traveled, based on the received traveling speed information.

The display control unit 314 controls turning on / off of the lighting device 342 of each traffic light 340 in accordance with the traffic time of each traffic light 140 on the traveling route of the emergency vehicle 320 so as to give priority to the traffic.

Next, the operation of the priority traveling assistance system for an emergency vehicle according to the present invention will be described with reference to the flowchart of FIG. Here, the traveling speed category (from 0 km / m to 3 k
The description will proceed assuming that (m / m) is set in advance.

The transmitting device 324 is the GP of the emergency vehicle 320.
Emergency vehicle 320 calculated by the S navigation device 322
The planned traveling route information, the current traveling position information, and the traveling speed information at that time detected by the traveling speed determination device 326 are transmitted to the server 300 via the wireless communication network (step S401).

These are received at the communication interface 304 of the server 300 at 14:00:30 (step S402).

The transit time calculation unit 312 uses the above step S
Driving speed information received at 402 (for example, 31 km / h
Based on (hereinafter, referred to as a third traveling speed)), the presence / absence of each traffic signal 340 on the traveling route is confirmed and its identification processing is performed, and the scheduled passage time of each traffic signal 340 is calculated (step S403). .

The display control unit 314 collates the calculated scheduled passage time with the reception time in step S402 to determine whether or not there is a predetermined time interval, for example, a time interval exceeding 40 seconds. (Step S404). Here, if this predetermined time interval or less is detected,
The display control unit 314 transmits a compulsory change command of the turn-on / off display to the traffic signal display control device of the traffic signal scheduled to pass through the wireless communication network (step S40).
5). On the contrary, if it is detected that the predetermined time interval is exceeded, the display control unit 314 does not issue the change command.

Subsequently, the traveling speed detection processing in step S401 is performed 5 seconds later at 14:00 35.
Again in seconds, at which time the running speed is 50 km
/ H (hereinafter referred to as the fourth traveling speed) is detected (step S406).

The speed determination unit 326 reads the third and fourth traveling speeds and compares them with preset traveling speed categories to determine whether they are in the same category (step S407). If it is detected that they are in the same category, there is no particular change in the traveling speed of the emergency vehicle 320. In this case, there is no significant change in the calculated estimated travel time, and therefore, the transmission device 324 does not particularly transmit each piece of information. Of course, it may be transmitted again.

If it is detected in step S407 that the vehicle is not in the same category, the transmitting device 324 determines that the traveling speed is 50 km / h detected in step S406.
Information of (fourth traveling speed) is transmitted to the server 300 (step S408).

The transit time calculation unit 312 of the server 300
The processing of step S403 is performed again, the presence / absence confirmation of each traffic signal 340 on the traveling route and the identification processing thereof are performed, and the scheduled passage time of each traffic signal 340 is calculated (step S409).

The display control unit 118 controls the above step S40.
The process of 4 is performed again (step S410), and if a predetermined time interval or less is detected, in order to reflect the newly calculated scheduled travel time, the traffic signal display control device of the traffic signal scheduled to travel is The compulsory change command for turning on / off the display is transmitted again through the wireless communication network (step S
411).

As described above, by using the priority traveling support system for an emergency vehicle according to the present invention, it is possible to perform the iterative correction of the traveling time of each traffic signal on the traveling route in consideration of the speed change of the emergency vehicle. As a result, it is possible to support the smooth priority passage of emergency vehicles, and it becomes possible to consider the surrounding traffic because the passage time is clear.

(Third Embodiment) The third embodiment is characterized in that, in the first and second embodiments described above, the emergency vehicle has a connecting means to a plurality of mobile communication networks. There is.

Here, as the connection means, a communication determination unit for periodically determining whether or not communication in wireless communication is possible, and a switching unit for switching the communication to a PHS (Personal Handyphone System) network or a mobile phone network are further provided. It is characterized by having (not particularly shown). For example, when a communication response from the receiving server 100 or 300 is not recognized by the communication determination unit due to a bad communication state such as a tunnel, the switching unit changes the communication connection to the PHS network. . What is sent to this PHS network is the above step S2.
01, each information in S401. Further, if there is no particular change in the route, each information except this route information may be transmitted. In this way, the amount of information transferred can be reduced and the delay in communication can be reduced.

By doing so, it becomes possible to surely perform the iterative calculation for the priority passage support of the emergency vehicle.

(Fourth Embodiment) In the fourth embodiment, a message is sent to the electronic bulletin board as shown in FIG. 5 in the first to third embodiments.

In addition to the display control of the traffic light in the first to third embodiments described above, when further transmitting a message to the electronic bulletin board, for example, in the first embodiment described above, the display control unit 118 is , A message to be displayed is selected on the electronic bulletin board provided on the traveling route of the emergency vehicle in consideration of the traveling direction of the emergency vehicle. In FIG. 5, the traveling direction of the emergency vehicle (on the left-hand side) is accompanied by the traffic of the emergency vehicle at points A and B in front of the electronic bulletin board.
In response to, select the message "Emergency vehicle approaches from behind" and send it. In the reverse traveling direction (on the right-hand side), the message "Emergency vehicle approaches from the front" is selected and transmitted. The messages on these bulletin boards are displayed directly or via the police, which is in charge of general electronic bulletin boards. In this way, the effect of suppressing the entry of another vehicle at the intersection can be expected.

When the electronic bulletin board is provided with a speaker, a message to the effect that an emergency vehicle is approaching may be notified by voice in accordance with the message displayed on the electronic bulletin board. In this case, a message vocalization function is provided in advance on the electronic bulletin board.

As described above, by further utilizing the electronic bulletin board, it becomes possible to enhance the effect of priority traffic support for emergency vehicles.

The present invention is not limited to the examples of the first to fourth embodiments described above with reference to FIGS. 1 to 5, and various modifications can be made without departing from the spirit of the invention. Is. For example, in the above-described first embodiment, the reception time at the server 100 is referred to in order to know the time interval of each information transmitted from the emergency vehicle 120, but the emergency vehicle 120 side substitutes the time information. , For example, GP
The transmission time of S or the transmission time of the traveling information transmission unit 124 may be transmitted.

In each of the above-described first to fourth embodiments, each step S which is a method for providing priority traffic support for the emergency vehicle.
Even if the processing programs 201 to S213, S401 to S411, and the various modifications are stored as application software in a recording medium such as a hard disk, and the program is installed by mounting the recording medium on an arbitrary computer. Good. Alternatively, these may be installed and used by downloading them from another computer via a network.
In addition, by storing in the recording medium in this way, the CD-R
The programs can be stored in a portable recording medium such as an OM and can be bought or sold, or can be carried.

[0061]

EFFECTS OF THE INVENTION By using the priority traffic assistance device and system for an emergency vehicle according to the present invention, it is possible to repeatedly correct the traffic time of each traffic signal on a travel route in consideration of the speed change of the emergency vehicle. As a result, it is possible to support smooth priority travel of emergency vehicles, and it becomes possible to consider the surrounding traffic because the traffic time is clear.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining a priority traffic assistance device for an emergency vehicle according to the present invention and a network system including the same in the first embodiment.

FIG. 2 is a flowchart for explaining the operation of the priority vehicle traffic assistance device of the emergency vehicle of FIG.

FIG. 3 is a block diagram for explaining a priority traffic assistance system for emergency vehicles according to a second embodiment of the present invention.

FIG. 4 is a flow chart for explaining the operation of the priority traffic assistance system for the emergency vehicle of FIG.

FIG. 5 is a block diagram for explaining that priority traffic assistance for emergency vehicles is further provided using a message bulletin board in the fourth embodiment.

[Explanation of symbols] 10, 30: Network system 100, 300: Server 102, 302: Internal bus 104, 304: Communication interface 106, 306: CPU 110, 310: Priority traffic support processing unit 112: Running speed calculation unit 114, 312: Passing time calculation unit 116: Speed determination unit 118, 314: Display control unit 120, 320: Emergency vehicle 122 and 322: GPS navigation device 124: Driving Information Transmission Device 324: Transmission device 326: Travel speed determination device 140, 340: traffic light

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5C083 AA01 BB26 DD13 EE11 GG17                       HH26 HH30 HH35 JJ26 JJ30                 5H180 AA12 BB04 BB15 CC12 EE02                       EE08 FF01 FF05 FF27 JJ02                       JJ03 JJ10

Claims (8)

[Claims] 1. From an emergency vehicle equipped with satellite positioning means,
Receiving means for receiving the information on the route to the destination derived by the satellite positioning means and the position information of the emergency vehicle through the mobile communication network, and the emergency based on the position information and the reception time thereof. A traveling speed calculating means for calculating a traveling speed of the vehicle, a transit time calculating means for preliminarily calculating a transit time of the emergency vehicle of each traffic signal on the route, and a transit time of each of the traffic signals of the emergency vehicle, Display control means for performing display control of the display lamp of each traffic light so as to give priority to the traffic, and the traveling speed calculated by the traveling speed calculation means corresponds to the immediately preceding traveling speed calculated immediately before that, And a traveling speed judging means for judging whether or not the traveling speed is within the traveling speed category set by each of the traveling speed ranges. If the traffic is detected, the traffic time calculating means pre-calculates the traffic time of the emergency vehicle of each traffic signal on the route again, and the display control means adjusts the traffic time according to the calculated traffic time. A priority traffic assistance device for an emergency vehicle, wherein display control of a display lamp of each of the traffic lights is performed so as to give priority. 2. From an emergency vehicle equipped with satellite positioning means,
The route information to the destination derived by the satellite positioning means and the position information of the emergency vehicle are received through the mobile communication network, and the transit time of the emergency vehicle of each traffic signal on the route is calculated in advance. A communication device having a traffic time calculating means and a display control means for performing display control of a display lamp of each traffic signal so as to prioritize the traffic according to the traffic time of each traffic signal of the emergency vehicle is provided. In the emergency vehicle priority passage support system, the emergency vehicle determines whether the traveling speed is within a traveling speed category set in a predetermined speed range corresponding to the traveling speed. Means and, if it is detected in the determination that the traveling speed is not within the traveling speed category, traveling speed information associated with the detection is transmitted to the communication device via the first mobile communication network. And a traveling speed information transmitting means for transmitting, the communication device, based on the traveling speed information transmitted by the traveling speed information transmitting means by the passage time calculating means, the communication device for each of the traffic signals on the route again. A priority traffic assistance system for an emergency vehicle, characterized in that the traffic time of the emergency vehicle is calculated, and the display control means performs the display control based on the calculated traffic time. 3. The priority traffic assistance system for an emergency vehicle according to claim 2, wherein the emergency vehicle can communicate with the traveling speed information transmitting means via the first mobile communication network. Communication determining means for determining whether or not, and if it is detected that communication is impossible,
Further comprising a switching means for switching the communication to a second mobile communication network different from the first mobile communication network, wherein the traveling speed information transmitting means, if the switching is performed by the switching means, A priority traffic assistance system for an emergency vehicle, characterized in that the traveling speed information is transmitted to the communication device via the second mobile communication network. 4. From an emergency vehicle equipped with satellite positioning means,
A receiving step of receiving via a mobile communication network information of a route to a destination derived by the satellite positioning means and position information of the emergency vehicle, and the emergency vehicle based on the position information and the reception time thereof. A traveling speed calculation step of calculating the traveling speed of, a transit time calculation step of pre-computing a transit time of the emergency vehicle of each traffic signal on the route, in accordance with a transit time of each traffic signal of the emergency vehicle, And a display control step of performing display control of display lamps of the respective traffic lights so as to give priority to the traffic, which is a priority traffic assistance method for an emergency vehicle, wherein the travel speed calculated by the travel speed calculation step is It is determined whether or not the vehicle travels within a traveling speed category set in a predetermined speed range corresponding to the immediately preceding traveling speed calculated immediately before. If it is detected that the degree is not within the traveling speed category, the passage time calculation step again pre-calculates the passage time of the emergency vehicle to each traffic signal on the route, and the display control step, A priority traffic assistance method for an emergency vehicle, characterized by performing display control of a display lamp of each traffic light so as to prioritize the traffic according to the calculated traffic time. 5. From an emergency vehicle equipped with satellite positioning means,
The route information to the destination derived by the satellite positioning means and the position information of the emergency vehicle are received through the mobile communication network, and the transit time of the emergency vehicle of each traffic signal on the route is calculated in advance. Emergency using a communication device having a traffic time calculating means and a display control means for performing display control of the display lamp of each traffic signal so as to prioritize the traffic according to the traffic time of each traffic signal of the emergency vehicle In the priority traffic assistance method for a vehicle, the emergency vehicle determines whether or not the traveling speed is within a traveling speed category set in a predetermined speed range corresponding to the traveling speed. When it is detected that the traveling speed is not within the traveling speed category, the traveling speed information associated with the detection is transmitted to the communication device via the first mobile communication network, and the communication device, Previous Based on the traveling speed information transmitted from the emergency vehicle, the transit time calculating means again calculates the transit time of the emergency vehicle of each traffic signal on the route, and the display control means calculates the transit time. A method for prioritizing traffic passage in an emergency vehicle, characterized in that the display control is performed based on the above. 6. The priority traffic assistance method for an emergency vehicle according to claim 5, wherein the emergency vehicle determines whether or not communication via the first mobile communication network is possible, If the judgment detects that communication is not possible,
Switching the communication to a second mobile communication network different from the first mobile communication network, and transmitting the traveling speed information to the communication device via the switched second mobile communication network. Priority traffic support method for emergency vehicles. 7. An emergency vehicle priority traffic assistance program for causing a computer to execute each processing in the emergency vehicle priority traffic assistance method according to any one of claims 4 to 6. 8. A computer-readable recording medium recording the priority passage assistance program for an emergency vehicle according to claim 7.