CN102622902B - Transit signal priority control system and method thereof - Google Patents
Transit signal priority control system and method thereof Download PDFInfo
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- CN102622902B CN102622902B CN201110032834.7A CN201110032834A CN102622902B CN 102622902 B CN102622902 B CN 102622902B CN 201110032834 A CN201110032834 A CN 201110032834A CN 102622902 B CN102622902 B CN 102622902B
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Abstract
The invention relates to a transit signal priority control system and a method thereof. Through comparing bus latitude and longitude coordinate information with the latitude and longitude coordinate information of each intersection center, a bus is determined whether to approach the intersection. Through comparing the bus latitude and longitude coordinate information with the latitude and longitude coordinate information of a monitoring point around the intersection, the bus is determined whether to arrive at the monitoring point. When the bus arrives at the monitoring point, a signal lamp control unit makes an intersection signal lamp provide a green light signal for the bus while a display unit on the bus displays light color information of the intersection signal lamp and time remaining information so that a driver can conveniently acquire the signal lamp state of the intersection ahead and react quickly.
Description
Technical field
The present invention relates to intelligent transportation control field, be specifically related to the preferential system and method for controlling of a kind of bus signals.
Background technology
City bus is the important component part of green traffic, low-carbon (LC) life, and along with socioeconomic fast development, urban population is more and more intensive, and the problem of blocking up of urban road becomes increasingly conspicuous, and this also becomes the key factor that affects people's living standard.In order to alleviate traffic congestion, meet people's trip requirements, public transit vehicle is implemented to signal priority and control, at home and abroad generally used.
Existing Chinese patent literature CN 101256717 B disclose a kind of quick public transport vehicle location and traffic signal control method and device based on GPS, the car-mounted device that this device forms by being arranged on the modules such as GPS on quick public transport vehicle and MCU, RF wireless transmission, crosses RF wireless transport module by the vehicle location information exchange of the bus rapid transit of acquisition and in real time, is automatically sent data to ground reception and treating apparatus and carried out the processing that wireless data avoids conflict by the RF wireless transport module of car-mounted device.Ground receiving and processing device is processed the related data information of the quick public transport vehicle of acquisition and these 2 positions of traffic signal controlling machine, and calculates relative position coordinates, distance and the vehicle heading etc. of quick public transport vehicle and ground receiving and processing device.Then these information in real time, are automatically sent to traffic signal controlling machine, by traffic signal controlling machine, the traffic lights at crossing are carried out in time, effectively switched again, be preferably quick public transport vehicle and give way, thereby guarantee that quick public transport vehicle is preferential, fast passing.Adopt above-mentioned technology, there is following problem: when the driver of BRT vehicle drives to crossing, can not judge that ground receives and treating apparatus whether treated the override requests of oneself, if current demand signal is green light signals, and will become red light, driver does not know whether traffic signal controlling machine can keep green light for oneself at once; If current, be red light phase, driver can not determine traffic signal controlling machine for allow oneself preferentially by and rapidly signal lamp is set to green light; Therefore in above two kinds of situations, when driver drives to crossing, can not determine it oneself is slow down to wait for or accelerate and pass through, in comparatively passive state.
Existing Chinese patent literature CN 101334934 A disclose a kind of vehicle mounted traffic displaying apparatus, this device is for being arranged on the traffic new indicating device of new number of one in car indication junction ahead, described indicating device comprises, a display panel, the signal receiving device being connected with display panel.On described display panel, also there are the loudspeaker of a sounding.During use, this device is accepted the data of the traffic lights of junction ahead, and shows on display panel, if junction ahead is red light, on display panel, shows that junction ahead is red light, and shows counting down of red light, if instead be that green light is also like this.Adopt the vehicle mounted traffic displaying apparatus in technique scheme, although can show the state of junction ahead signal lamp, but for driver, when vehicle arrives crossing, the demonstration of no matter seeing the signal lamp of junction ahead still sees that the signal lamp state in own car shows, in following two kinds of situations or can not and determine according to the color of current demand signal lamp whether oneself should accelerate to pass through crossing excess time:
1, the current red light that is shown as of belisha beacon, but countdown demonstration is about to become green light, driver can not be according to own current situation judgement, and when vehicle arrives crossing, can signal lamp become green light, can not determine whether oneself needs Reduced Speed Now, parking waiting while then arriving crossing;
2, the current green light that is shown as of belisha beacon, but countdown demonstration is about to become amber light, driver can not be according to own current situation judgement, when vehicle arrives crossing, whether signal lamp can become red light, be that driver can not judge oneself whether can accelerate to pass through rapidly crossing, avoid unnecessary wait.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of for bus priority signal is provided and can show junction ahead signal lamp light color status information and excess time information take prompting driver command and control center as bus provides priority signal, therefore driver can make a response rapidly according to this information, determines it oneself is accelerate by crossing or the preferential automatic control system of bus signals of should ramp to stop waiting for.
For solving the problems of the technologies described above, the invention provides a kind of bus signal priority control system and method, comprising:
Car-mounted device: be arranged on bus, comprise:
Vehicle location detecting unit: for determining in real time vehicle latitude and longitude coordinates information and this latitude and longitude coordinates information being sent to command and control center;
Display unit: for show the crossing that vehicle be about to arrive signal lamp light color information and excess time information;
Data processing unit: be arranged at inside, command and control center, receive in real time described vehicle latitude and longitude coordinates information, judgement vehicle location and travel direction;
Signal lamp control module: according to the result of described data processing unit, control the variation of belisha beacon;
Described data processing unit comprises:
Data memory module: for storing the latitude and longitude coordinates information at each center, crossing and being arranged on crossing monitoring point latitude and longitude coordinates information around;
Data reception module: receive in real time described vehicle location latitude and longitude coordinates information;
Comparing module: the crossing center longitude coordinate information of storing in the vehicle latitude and longitude coordinates information that described data reception module is received and described data memory module is compared, judge whether vehicle passes through this crossing, and to signal lamp control module transmitted signal lamp steering order.
Also comprise the priority signal processing unit being arranged in intersection annunciator, described priority signal processing unit comprises video processing module, by controlling of bus priority instruction process, is to be sent to described display unit after the described display unit information that can show to show.
Described vehicle location detecting unit comprises:
GPS locating module: for determining in real time the latitude and longitude coordinates information of vehicle location;
Data transmission module: for the latitude and longitude coordinates information of vehicle is sent to described data reception module.
Crossing around arranges a plurality of monitoring points along vehicle heading, the distance that to be vehicle travel a second with the speed limit in this section of the distance between described adjacent two monitoring points.
Center, described crossing and monitoring point are determined on the electronic chart with latitude and longitude coordinates information, by the described electronic chart with latitude and longitude coordinates information, provide described crossing center longitude coordinate information and monitoring point latitude and longitude coordinates information, and be stored in described data memory module with the form of tables of data.
Described display unit is LCDs.
Described car-mounted device also comprises a phonation unit, described priority signal processing unit also comprises audio processing modules, and described audio processing modules is the sound signal that described sound-producing device can be play by junction ahead signal lamp light color status information and information processing excess time.
A bus signal priority control method, comprises the following steps:
A, data processing unit utilization, with the electronic chart of latitude and longitude coordinates information, obtain the latitude and longitude coordinates information of each center, crossing and position, monitoring point, with the form of tables of data, are stored in data memory module;
B, vehicle location detecting unit obtain vehicle latitude and longitude coordinates information in real time, are sent to the data reception module of data processing unit;
C, comparing module are compared the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module in real time, judge whether described vehicle approaches crossing;
D, determine behind described vehicle approach crossing, comparing module is compared the latitude and longitude coordinates information of the latitude and longitude coordinates information of described vehicle and described monitoring point in real time, when vehicle arrives monitoring point, comparing module is sent signal lamp steering order to signal lamp control module, it is " 1 " for vehicle provides green light all-clear and public traffic in priority position is set that signal lamp control module is controlled belisha beacon, simultaneously, video processing unit is treated to by this green light all-clear the video information that described display unit can show, display unit show junction ahead signal lamp light color state and excess time information.
Further comprising the steps of:
E, comparing module continue the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module to compare in real time, when vehicle arrives center, crossing, public traffic in priority position are set for " 0 ".
In described steps d, a plurality of monitoring points are set at crossing, the distance between described adjacent two monitoring points is the distance that vehicle travels a second with this section speed limit; According to the travel speed of vehicle, when Vehicle Driving Cycle is very fast, when setting vehicle and arriving apart from compare Yuan monitoring point, crossing for vehicle provides priority signal, when Vehicle Driving Cycle is slower, when setting vehicle and arriving apart from compare Jin monitoring point, crossing for vehicle provides priority signal.
In described step b, utilize the GPS locating module in vehicle location detecting unit to obtain in real time vehicle latitude and longitude coordinates information, by described data transmission module by vehicle latitude and longitude coordinates communication to described data reception module.
When vehicle and certain distance between is a bit less than travel a p.s. half of ultimate range of vehicle, think that vehicle arrives this point.
In described steps d, it is the audio-frequency information that described phonation unit can be play by the light color status information of junction ahead signal lamp and information processing excess time that described priority signal processing unit adopts audio processing modules, and described phonation unit is play this audio prompt driver.
There is following beneficial effect in the present invention:
1, the car-mounted device in the present invention is except can being sent to vehicle position information command and control center, also with display unit, when vehicle arrives monitoring point, can obtain immediately light color information and the countdown information of junction ahead signal lamp, be aided with auditory tone cues simultaneously, driver can be made a response immediately, continue to travel by crossing or should wait for by ramp to stop.
2, in the present invention, adopt the method for comparing in real time vehicle latitude and longitude coordinates information and monitoring point latitude and longitude coordinates information, when vehicle approach crossing, can obtain in time prior-release signal, and after vehicle obtains prior-release signal, system continues vehicle latitude and longitude coordinates information and crossing center longitude coordinate information to compare, when vehicle arrives center, crossing, system can obtain public transit vehicle in time by the signal at crossing, just can make rapidly according to the traffic information at current crossing next step signal lamp plan for adjustment, prevent because public traffic in priority affects greatly to normal traffic.
Accompanying drawing explanation
Fig. 1 is crossing of the present invention center electron map label method;
Fig. 2 is that system of the present invention forms;
Fig. 3 is system program process flow diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail.
A kind of bus signal priority control system in the present embodiment, comprising:
Car-mounted device: be arranged on bus, comprise:
Vehicle location detecting unit: for determining in real time vehicle latitude and longitude coordinates information and this latitude and longitude coordinates information being sent to command and control center;
Display unit: for show the crossing that vehicle be about to arrive signal lamp light color information and excess time information;
Data processing unit: be arranged at inside, command and control center, receive in real time described vehicle latitude and longitude coordinates information, judgement vehicle location and travel direction;
Signal lamp control module: according to the result of described data processing unit, control the variation of belisha beacon;
Described data processing unit comprises:
Data memory module: for storing the latitude and longitude coordinates information at each center, crossing and being arranged on crossing monitoring point latitude and longitude coordinates information around;
Data reception module: receive in real time described vehicle location latitude and longitude coordinates information;
Comparing module: the crossing center longitude coordinate information of storing in the vehicle latitude and longitude coordinates information that described data reception module is received and described data memory module is compared, judge whether vehicle passes through this crossing, and to signal lamp control module transmitted signal lamp steering order.
Also comprise the priority signal processing unit being arranged in intersection annunciator, described priority signal processing unit comprises video processing module, by controlling of bus priority instruction process, is to be sent to described display unit after the described display unit information that can show to show.
Described vehicle location detecting unit comprises:
GPS locating module: for determining in real time the latitude and longitude coordinates information of vehicle location;
Data transmission module: for the latitude and longitude coordinates information of vehicle is sent to described data reception module.
Center, described crossing and monitoring point are determined on the electronic chart with latitude and longitude coordinates information, by the described electronic chart with latitude and longitude coordinates information, provide described crossing center longitude coordinate information and monitoring point latitude and longitude coordinates information, and be stored in described data memory module with the form of tables of data.
Described display unit is LCDs.
Described car-mounted device also comprises a phonation unit, described priority signal processing unit also comprises audio processing modules, and described audio processing modules is the sound signal that described sound-producing device can be play by junction ahead signal lamp light color status information and information processing excess time.
A bus signal priority control method, comprises the following steps:
A, data processing unit utilization, with the electronic chart of latitude and longitude coordinates information, obtain the latitude and longitude coordinates information of each center, crossing and position, monitoring point, with the form of tables of data, are stored in data memory module;
B, vehicle location detecting unit obtain vehicle latitude and longitude coordinates information in real time, are sent to the data reception module of data processing unit;
C, comparing module are compared the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module in real time, judge whether described vehicle approaches crossing;
D, determine behind described vehicle approach crossing, comparing module is compared the latitude and longitude coordinates information of the latitude and longitude coordinates information of described vehicle and described monitoring point in real time, when vehicle arrives monitoring point, comparing module is sent signal lamp steering order to signal lamp control module, it is " 1 " for vehicle provides green light all-clear and public traffic in priority position is set that signal lamp control module is controlled belisha beacon, simultaneously, video processing unit is treated to by this green light all-clear the video information that described display unit can show, display unit show junction ahead signal lamp light color state and excess time information.
Further comprising the steps of:
E, comparing module continue the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module to compare in real time, when vehicle arrives center, crossing, public traffic in priority position are set for " 0 ".
In described step b, utilize the GPS locating module in vehicle location detecting unit to obtain in real time vehicle latitude and longitude coordinates information, by described data transmission module by vehicle latitude and longitude coordinates communication to described data reception module.
When vehicle and certain distance between is a bit less than travel a p.s. half of ultimate range of vehicle, think that vehicle arrives this point.
The course of work of this bus signals lamp priority control system is:
First, for each belisha beacon is numbered, adopt electronic chart to obtain each crossing center longitude coordinate information (x
m, y
m) monitoring point latitude and longitude coordinates information (x on (wherein horizontal ordinate represents longitude, and ordinate represents latitude value, and m represents the coordinate information of m belisha beacon) and each crossing four direction
mn, y
mn) (wherein horizontal ordinate represents longitude, and ordinate represents latitude value, and subscript m and n represent the coordinate information of n the monitoring point at m crossing) be stored in described data memory module with the form of tables of data, as shown in the table:
In the process of advancing at special vehicle, described GPS locating module is determined the once latitude and longitude coordinates information (x of described vehicle in 1s
k, y
k), then utilize data transmission module to send this latitude and longitude coordinates information to data reception module in data processing unit.
Comparing module is by described vehicle latitude and longitude coordinates information (x
k, y
k) with described data memory module in tables of data in each crossing center longitude coordinate information (x
m, y
m) compare, and then determine that whether described vehicle is more and more nearer apart from crossing.
Judge behind vehicle approach crossing, comparing module is by described vehicle latitude and longitude coordinates information (x
k, y
k) with described data memory module in tables of data in monitoring point latitude and longitude coordinates information (x
mn, y
mn) compare, consider the time delay of signals transmission, when the distance between vehicle and monitoring point is less than L/2, think that vehicle arrives this monitoring point, when vehicle latitude and longitude coordinates information equals (x
mn, y
mn) time, can determine that vehicle arrives n the monitoring point at m crossing, now signal lamp control module control m belisha beacon is that vehicle is opened green light, public traffic in priority position is set for " 1 ", described video processing module of while, after junction ahead signal lamp light color status information and information processing excess time are the described display unit video information that can show, by the signal lamp light color information of junction ahead and excess time information show, to point out driver.
Comparing module continues described vehicle latitude and longitude coordinates information (x
k, y
k) with described data memory module in tables of data in crossing center longitude coordinate information (x
m, y
m) compare, when the distance at vehicle and center, crossing is less than L/2, think that vehicle arrives center, crossing, the green light of now signal lamp control module control vehicle heading becomes amber light, public traffic in priority position is set for " 0 ".
Embodiment 2
On the basis of embodiment 1, in order to make bus obtain green light signals in suitable position, and it is excessive can too far or too closely not cause normal traffic to be affected apart from center, crossing because of monitoring point, as shown in Figure 1, for m crossing, crossing arranges a plurality of monitoring points along vehicle heading around, because GPS locks once the positional information of vehicle every 1s, therefore the distance that to be vehicle travel a second with the speed limit in this section of the distance between adjacent monitoring point, the positional information that makes each monitoring point is effective information, and the monitoring point that monitoring point is numbered away from center, crossing is monitoring point m1.
In described steps d, according to the travel speed of vehicle, when Vehicle Driving Cycle is very fast, when setting vehicle and arriving apart from compare Yuan monitoring point, crossing for vehicle provides priority signal, when Vehicle Driving Cycle is slower, when setting vehicle and arriving apart from compare Jin monitoring point, crossing for vehicle provides priority signal.
Embodiment 3
On the basis of embodiment 1 and embodiment 2, described information indicating unit comprises a phonation unit, in corresponding described priority signal processing unit, audio processing modules is set, the signal lamp status information of vehicle heading is treated to the sound signal that described sound-producing device can be play, by phonation unit, play this sound signal and whether can pass through crossing with prompting driver, for example can play " preferentially passing through ", driver just learns that oneself has obtained priority communication signal, can give it the gun and pass through crossing, play " waiting for 3 seconds " driver and pass through crossing after just must waiting for 3 seconds, just can slow down and go slowly.
Although the present invention elaborates it by embodiment; but; those skilled in the art should be understood that any form that does not exceed claim protection domain made on this basis and the variation of details, all belong to invention which is intended to be protected.
Claims (12)
1. a bus signal priority control system, comprising:
Car-mounted device: be arranged on bus, comprise:
Vehicle location detecting unit: for determining in real time vehicle latitude and longitude coordinates information and this latitude and longitude coordinates information being sent to command and control center;
Display unit: for show the crossing that vehicle be about to arrive signal lamp light color information and excess time information;
Data processing unit: be arranged at inside, command and control center, receive in real time described vehicle latitude and longitude coordinates information, judgement vehicle location and travel direction;
Signal lamp control module: according to the result of described data processing unit, control the variation of belisha beacon;
It is characterized in that:
Described data processing unit comprises:
Data memory module: for storing the latitude and longitude coordinates information at each center, crossing and being arranged on crossing monitoring point latitude and longitude coordinates information around;
Data reception module: receive in real time described vehicle location latitude and longitude coordinates information;
Comparing module: the crossing center longitude coordinate information of storing in the vehicle latitude and longitude coordinates information that described data reception module is received and described data memory module is compared, judge whether vehicle passes through this crossing, and to signal lamp control module transmitted signal lamp steering order;
Also comprise the priority signal processing unit being arranged in intersection annunciator, described priority signal processing unit comprises video processing module, by controlling of bus priority instruction process, is to be sent to described display unit after the described display unit information that can show to show.
2. bus signal priority control system according to claim 1, is characterized in that:
Described vehicle location detecting unit comprises
GPS locating module: for determining in real time the latitude and longitude coordinates information of vehicle location;
Data transmission module: for the latitude and longitude coordinates information of vehicle is sent to described data reception module.
3. bus signal priority control system according to claim 1 and 2, is characterized in that:
Crossing around arranges a plurality of monitoring points along vehicle heading, the distance that to be vehicle travel a second with the speed limit in section, place of the distance between adjacent two described monitoring points.
4. bus signal priority control system according to claim 3, is characterized in that:
Center, described crossing and monitoring point are determined on the electronic chart with latitude and longitude coordinates information, by the described electronic chart with latitude and longitude coordinates information, provide described crossing center longitude coordinate information and monitoring point latitude and longitude coordinates information, and be stored in described data memory module with the form of tables of data.
5. the bus signal priority control system of stating according to claim 4, is characterized in that:
Described display unit is LCDs.
6. according to claim 1,2,4,5 arbitrary described bus signal priority control systems, is characterized in that:
Described car-mounted device also comprises a phonation unit, described priority signal processing unit also comprises audio processing modules, and described audio processing modules is the sound signal that described sound-producing device can be play by junction ahead signal lamp light color status information and information processing excess time.
7. a bus signal priority control method, is characterized in that:
Comprise the following steps:
A, data processing unit utilization, with the electronic chart of latitude and longitude coordinates information, obtain the latitude and longitude coordinates information of each center, crossing and position, monitoring point, with the form of tables of data, are stored in data memory module;
B, vehicle location detecting unit obtain vehicle latitude and longitude coordinates information in real time, are sent to the data reception module of data processing unit;
C, comparing module are compared the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module in real time, judge whether described vehicle approaches crossing;
D, determine behind described vehicle approach crossing, comparing module is compared the latitude and longitude coordinates information of the latitude and longitude coordinates information of described vehicle and described monitoring point in real time, when vehicle arrives monitoring point, comparing module is sent signal lamp steering order to signal lamp control module, it is " 1 " for vehicle provides green light all-clear and public traffic in priority position is set that signal lamp control module is controlled belisha beacon, simultaneously, video processing unit is treated to by this green light all-clear the video information that display unit can show, display unit show junction ahead signal lamp light color state and excess time information.
8. bus signal priority control method according to claim 7, is characterized in that:
Further comprising the steps of:
E, comparing module continue the crossing center longitude coordinate information in vehicle latitude and longitude coordinates information in described data reception module and described data memory module to compare in real time, when vehicle arrives center, crossing, the green light that signal lamp control module is controlled vehicle heading becomes amber light, public traffic in priority position is set for " 0 ".
9. according to the bus signal priority control method described in claim 7 or 8, it is characterized in that:
In steps d, a plurality of monitoring points are set, the distance that to be vehicle travel a second with the speed limit in section, place of the distance between adjacent two described monitoring points at crossing; According to the travel speed of vehicle, when Vehicle Driving Cycle is very fast, when setting vehicle and arriving apart from compare Yuan monitoring point, crossing for vehicle provides priority signal, when Vehicle Driving Cycle is slower, when setting vehicle and arriving apart from compare Jin monitoring point, crossing for vehicle provides priority signal.
10. bus signal priority control method according to claim 9, is characterized in that:
In step b, utilize the GPS locating module in vehicle location detecting unit to obtain in real time vehicle latitude and longitude coordinates information, by described data transmission module by vehicle latitude and longitude coordinates communication to described data reception module.
11. bus signal priority control methods according to claim 10, is characterized in that:
When vehicle and certain distance between is a bit less than travel a p.s. half of ultimate range of vehicle, think that vehicle arrives this point.
12. according to claim 7, and 8,10,11 arbitrary described bus signal priority control methods, is characterized in that:
In steps d, it is the audio-frequency information that phonation unit can be play by the light color status information of junction ahead signal lamp and information processing excess time that described priority signal processing unit adopts audio processing modules, and described phonation unit is play this audio prompt driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032834.7A CN102622902B (en) | 2011-01-30 | 2011-01-30 | Transit signal priority control system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032834.7A CN102622902B (en) | 2011-01-30 | 2011-01-30 | Transit signal priority control system and method thereof |
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| Publication Number | Publication Date |
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| CN102622902A CN102622902A (en) | 2012-08-01 |
| CN102622902B true CN102622902B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110032834.7A Expired - Fee Related CN102622902B (en) | 2011-01-30 | 2011-01-30 | Transit signal priority control system and method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800201A (en) * | 2012-08-15 | 2012-11-28 | 广西瀚特信息产业股份有限公司 | Control method and system for intersection signal timing guaranteeing priority of buses |
| CN103985267A (en) * | 2014-06-06 | 2014-08-13 | 郝明学 | System and method for synchronously displaying traffic signal lamp state of front intersection |
| CN105469595A (en) * | 2014-08-13 | 2016-04-06 | 上海博泰悦臻电子设备制造有限公司 | On-vehicle terminal of special vehicle, terminal and method for dodging the special vehicle |
| CN104575019B (en) * | 2014-09-19 | 2016-08-10 | 北京易华录信息技术股份有限公司 | A kind of method and system that accurate priority signal can be provided for bus rapid transit |
| CN104882012A (en) * | 2015-06-15 | 2015-09-02 | 江苏智通交通科技有限公司 | Urban public transport signal priority control system |
| CN108470455B (en) * | 2018-03-21 | 2021-09-24 | 千寻位置网络（浙江）有限公司 | Bus priority system and control method |
| CN112991722B (en) * | 2021-02-03 | 2022-07-19 | 浙江中控信息产业股份有限公司 | High-frequency gps (gps) point bus real-time intersection prediction method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6989766B2 (en) * | 2003-12-23 | 2006-01-24 | International Business Machines Corporation | Smart traffic signal system |
| DE102005052424A1 (en) * | 2005-11-03 | 2007-05-10 | Robert Bosch Gmbh | projection display |
| CN101256717B (en) * | 2008-04-09 | 2010-06-02 | 重庆市易博数字技术有限公司 | Quick public transport vehicle positioning based on GPS ,and traffic signal control method and apparatus |
| CN201465297U (en) * | 2009-04-28 | 2010-05-12 | 重庆市易博数字技术有限公司 | Device for controlling traffic signal lamp by vehicle location |
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