CA2612230A1 - Traffic preemption system with headway management - Google Patents
Traffic preemption system with headway management Download PDFInfo
- Publication number
- CA2612230A1 CA2612230A1 CA002612230A CA2612230A CA2612230A1 CA 2612230 A1 CA2612230 A1 CA 2612230A1 CA 002612230 A CA002612230 A CA 002612230A CA 2612230 A CA2612230 A CA 2612230A CA 2612230 A1 CA2612230 A1 CA 2612230A1
- Authority
- CA
- Canada
- Prior art keywords
- traffic
- mass
- preemption
- transit vehicle
- identification code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/087—Override of traffic control, e.g. by signal transmitted by an emergency vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/081—Plural intersections under common control
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
Abstract
A traffic-preemption system and method that communicates an identification code from vehicles to a traffic location. Traffic light control equipment, such as a receiver and traffic light circuit at each intersection of a controlled area, is used to manage headway in mass-transit systems as well as to provide traffic light pre-emption for emergency vehicles. Each traffic light circuit in the controlled area has a receiver located at a traffic location and adapted to receive an identification code from a mass-transit vehicle. A decoding circuit responds to the received identification code by attempting to identify the mass-transit vehicle and determine the timing on the identified route that improves an identified vehicle's headway and/or route timing. In response to determining the timing, a traffic-preemption command is generated for a traffic light on the identified route.
Claims (20)
1. A traffic-preemption system, comprising:
a transmitter adapted to transmit an identification code of a mass-transit vehicle;
and a traffic light circuit having receiver located at a traffic location and adapted to receive the identification code, and a decoding circuit adapted to attempt to identify the mass-transit vehicle using the identification code, compare a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule, and, in response to determining a variance between the time of arrival and the pre-determined schedule, generate a traffic-preemption command for a traffic light.
a transmitter adapted to transmit an identification code of a mass-transit vehicle;
and a traffic light circuit having receiver located at a traffic location and adapted to receive the identification code, and a decoding circuit adapted to attempt to identify the mass-transit vehicle using the identification code, compare a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule, and, in response to determining a variance between the time of arrival and the pre-determined schedule, generate a traffic-preemption command for a traffic light.
2. The traffic-preemption system of claim 1, wherein the decoding circuit is further adapted to generate the traffic-preemption command for a traffic light at the traffic location.
3. The traffic-preemption system of claim 1, wherein the decoding circuit is further adapted to generate the traffic-preemption command for a traffic light at a traffic location further along the mass-transit vehicle's route.
4. The traffic-preemption system of claim 1, wherein the decoding circuit is further adapted to generate the traffic-preemption command for a traffic light based on a preemption hierarchy.
5. The traffic-preemption system of claim 1, wherein the receiver is further adapted to receive an identification code from a second mass-transit vehicle; and the decoding circuit is further adapted to attempt to identify the second mass-transit vehicle, compare a time of the second mass-transit vehicle's arrival at the traffic location with a pre-determined schedule, and, in response to determining a variance between the time of arrival and the pre-determined schedule for both mass-transit vehicles, generate a traffic-preemption command for a traffic light based on the mass-transit vehicle having the largest variance.
6. The traffic-preemption system of claim 1, wherein the mass-transit vehicle further comprises a receiver configured to facilitate two-way communications between the mass-transit vehicle and the traffic light circuit, whereby variance information may be communicated to the mass-transit vehicle.
7. A method for managing headway of a mass-transit vehicle at a traffic location in a traffic-preemption system, comprising:
transmitting an identification code from a transmitter associated with the mass-transit vehicle;
receiving the identification code at a receiver situated at the traffic location;
identifying the mass-transit vehicle using the identification code;
comparing a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule;
determining a variance between the time of arrival and the pre-determined schedule; and generating a traffic-preemption command for a traffic light based on the determined variance.
transmitting an identification code from a transmitter associated with the mass-transit vehicle;
receiving the identification code at a receiver situated at the traffic location;
identifying the mass-transit vehicle using the identification code;
comparing a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule;
determining a variance between the time of arrival and the pre-determined schedule; and generating a traffic-preemption command for a traffic light based on the determined variance.
8. The method of claim 7, further comprising generating the traffic-preemption command for the traffic light in response to the determined variance exceeding a threshold.
9. The method of claim 7, wherein the traffic-preemption command is generated for the traffic light at the traffic location.
10. The method of claim 7, wherein the traffic-preemption command is generated for the traffic light at a traffic location further along the mass-transit vehicle's route.
11. The method of claim 7, wherein the traffic-preemption command is generated based on a preemption hierarchy.
12. The method of claim 7, wherein the traffic-preemption command is generated to facilitate regular intervals between the mass-transit vehicle and other mass-transit vehicles.
13. The method of claim 7, wherein the traffic-preemption command is generated to facilitate schedule adherence by the mass-transit vehicle.
14. A traffic-preemption system, comprising:
a first transceiver associated with a mass-transit vehicle and adapted to transmit an identification code of the mass-transit vehicle and receive encoded information; and a controller provided at each one of a plurality of intersections;
a respective second transceiver coupled to each controller and adapted to receive the transmitted identification code from the first transceiver and to transmit the encoded information to the first transceiver; and a respective decoding circuit coupled to each controller and adapted to attempt to identify the mass-transit vehicle using the identification code;
wherein the controller is adapted to compare a time of the mass-transit vehicle's arrival at the one of the intersections with a pre-determined schedule, and, in response to determining a variance between the time of arrival and the pre-determined schedule, generate a traffic-preemption command for a traffic light and transmit variance information to the mass-transit vehicle.
a first transceiver associated with a mass-transit vehicle and adapted to transmit an identification code of the mass-transit vehicle and receive encoded information; and a controller provided at each one of a plurality of intersections;
a respective second transceiver coupled to each controller and adapted to receive the transmitted identification code from the first transceiver and to transmit the encoded information to the first transceiver; and a respective decoding circuit coupled to each controller and adapted to attempt to identify the mass-transit vehicle using the identification code;
wherein the controller is adapted to compare a time of the mass-transit vehicle's arrival at the one of the intersections with a pre-determined schedule, and, in response to determining a variance between the time of arrival and the pre-determined schedule, generate a traffic-preemption command for a traffic light and transmit variance information to the mass-transit vehicle.
15. The traffic-preemption system of claim 14, wherein the controller is further adapted to generate the traffic-preemption command for a traffic light at the mass-transit vehicle's present intersection.
16. The traffic-preemption system of claim 14, wherein the controller is further adapted to generate the traffic-preemption command for a traffic light at an intersection further along the mass-transit vehicle's route.
17. The traffic-preemption system of claim 14, wherein the controller is further adapted to generate the traffic-preemption command for a traffic light based on a preemption hierarchy.
18. A traffic-preemption system, comprising:
means for transmitting an identification code from a transmitter associated with the mass-transit vehicle;
means for receiving the identification code at a receiver situated at the traffic location;
means for identifying the mass-transit vehicle using the identification code;
means for comparing a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule;
means for determining a variance between the time of arrival and the pre-determined schedule; and means for generating a traffic-preemption command for a traffic light based on the determined variance.
means for transmitting an identification code from a transmitter associated with the mass-transit vehicle;
means for receiving the identification code at a receiver situated at the traffic location;
means for identifying the mass-transit vehicle using the identification code;
means for comparing a time of the mass-transit vehicle's arrival at the traffic location with a pre-determined schedule;
means for determining a variance between the time of arrival and the pre-determined schedule; and means for generating a traffic-preemption command for a traffic light based on the determined variance.
19. The traffic-preemption system of claim 18, wherein the generating means comprises means for determining if the variance exceeds a threshold.
20. The traffic-preemption system of claim 19, wherein the generating means comprises means for determining a traffic-preemption command hierarchy.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/154,347 | 2005-06-16 | ||
| US11/154,347 US7432826B2 (en) | 2005-06-16 | 2005-06-16 | Traffic preemption system with headway management |
| PCT/US2006/023190 WO2006138393A2 (en) | 2005-06-16 | 2006-06-14 | Traffic preemption system with headway management |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2612230A1 true CA2612230A1 (en) | 2006-12-28 |
| CA2612230C CA2612230C (en) | 2012-01-03 |
Family
ID=37571116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2612230A Active CA2612230C (en) | 2005-06-16 | 2006-06-14 | Traffic preemption system with headway management |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7432826B2 (en) |
| EP (1) | EP1894182A4 (en) |
| KR (1) | KR20080016963A (en) |
| CN (1) | CN100592349C (en) |
| AU (1) | AU2006259428B2 (en) |
| CA (1) | CA2612230C (en) |
| IL (1) | IL188135A (en) |
| NZ (1) | NZ564464A (en) |
| TW (1) | TW200707345A (en) |
| WO (1) | WO2006138393A2 (en) |
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- 2006-06-14 CA CA2612230A patent/CA2612230C/en active Active
- 2006-06-14 NZ NZ564464A patent/NZ564464A/en not_active Application Discontinuation
- 2006-06-14 WO PCT/US2006/023190 patent/WO2006138393A2/en active Application Filing
- 2006-06-14 EP EP06773166A patent/EP1894182A4/en not_active Withdrawn
- 2006-06-14 AU AU2006259428A patent/AU2006259428B2/en active Active
- 2006-06-14 KR KR1020087001228A patent/KR20080016963A/en not_active Application Discontinuation
- 2006-06-14 CN CN200680025115A patent/CN100592349C/en not_active Expired - Fee Related
- 2006-06-15 TW TW095121463A patent/TW200707345A/en unknown
-
2007
- 2007-12-13 IL IL188135A patent/IL188135A/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006138393A3 (en) | 2007-12-06 |
| KR20080016963A (en) | 2008-02-22 |
| EP1894182A4 (en) | 2011-04-06 |
| NZ564464A (en) | 2011-04-29 |
| US7432826B2 (en) | 2008-10-07 |
| AU2006259428A1 (en) | 2006-12-28 |
| CN100592349C (en) | 2010-02-24 |
| CA2612230C (en) | 2012-01-03 |
| AU2006259428B2 (en) | 2009-07-23 |
| TW200707345A (en) | 2007-02-16 |
| US20070008173A1 (en) | 2007-01-11 |
| EP1894182A2 (en) | 2008-03-05 |
| CN101218614A (en) | 2008-07-09 |
| IL188135A (en) | 2012-05-31 |
| WO2006138393A2 (en) | 2006-12-28 |
| IL188135A0 (en) | 2008-03-20 |
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| EEER | Examination request |