Traffic monitoring and management method and apparatus

• US 5,289,183 A
• Filed: 06/19/1992
• Issued: 02/22/1994
• Est. Priority Date: 06/19/1992
• Status: Expired due to Term

• Current Assignee: Transcore Its LLC (Roper Technologies, Inc.)
• Original Assignee: At/Comm Incorporated
• Inventors: Rourke, John A., Kowal, Keith E., Hassett, John J.
• Primary Examiner(s): Swarthout, Brent
• Application Number:
  US07/901,278
• Time in Patent Office: 613 Days
• Field of Search: 340/928, 340/905, 340/934, 340/936, 340/988, 340/991, 235/384, 455/54.1, 455/49.1, 455/89, 364/436, 364/437, 364/438, 364/424.01
• US Class Current: 340/905
• CPC Class Codes: G01S 13/765 with exchange of information between interrogator and responder
• CPC Class Codes: G06F 2219/10 Environmental application, e.g. waste reduction, pollution control, compliance with environmental legislation
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G08G 1/0104 Measuring and analyzing of parameters relative to traffic conditions
• CPC Class Codes: G08G 1/123 indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, tramstransmission of navigation instructions to vehicles G08G1/0968
• CPC Class Codes: G08G 1/127 to a central station ; Indicators in a central station

Abstract

Methods and apparatus for the automatic and management of traffic, utilizing a microprocessor-based, read-write vehicle borne transponder device. The system includes plurality of transceivers spaced along and positioned adjacent to a roadway, a plurality of vehicle borne transponders, and an independent network management computer. As vehicles traverse the roadway the transponders communicate with the transceivers and one or both of those units collect information such as, vehicle entrance point, vehicle exit point, vehicle speed, number of passengers in each vehicle, and vehicle class. Some of the collected information is processed by the transceivers and transponders, while other information is transmitted to the network management computer for processing.

Claims

1. Apparatus for the analysis and management of vehicle traffic along a roadway comprising,

a plurality of transceivers positioned adjacent to said roadway, each of said transceivers including means for transmitting radio frequency signals toward said roadway, said signals including information signals including a location of said transceiver, and a current date and time,

a plurality of transponders, each of said transponders being located in separate ones of said vehicles passing along said roadway, each of said transponders including a data processor, a memory, and a receiver/transmitter, intercoupled such that said information signals transmitted from said transceiver can be received, and processed in said data processor and at least a subset of said information signals can be stored in said memory in at least one of, received and processed form, and

independent data processor means coupled to said transceiver for two-way communication with said transceiver, and

wherein said memory includes means for storing a first said current date and time received from a first one of said transceivers, and said apparatus includes a second one of said transceivers, positioned downstream from said first transceiver and including means for signaling said transponders to transmit said first current date and time to said second transceiver.

2. Apparatus in accordance with claim 1 wherein said second transceiver includes transceiver processor means for using said first current date and time to calculate an elapsed time between when a vehicle containing one of said transponders passes said first transceiver and when said vehicle passes said second transceiver.

3. Apparatus in accordance with claim 2 wherein said independent data processor includes means for interrogating said second transceiver to recover said elapsed time for at least selected ones of said vehicle transponders, and means for using elapsed time received in connection with a plurality of said vehicles to generate signals indicative of roadway vehicle congestion.

4. Apparatus for the analysis and management of vehicle traffic along a roadway comprising,

a plurality of transceivers positioned adjacent said roadway, each of said transceivers including means for transmitting radio frequency signals toward said roadway, said signals including information signals including a location of said transceiver, and a current date and time,

a plurality of transponders, each of said transponders being located in separate ones of said vehicles passing along said roadway, each of said transponders including a data processor, a memory, and a receiver/transmitter, intercoupled such that said information signals transmitted from said transceiver can be received, and processed in said data processor and at least a subset of said information signals can be stored in said memory in at least one of, received and processed form, and

independent data processor means coupled to said transceiver for two-way communication with said transceiver,

said roadway including a plurality of entrances and a plurality of exits, and said apparatus including an associated entrance transceiver located at each of said entrances and an associated exit transceiver located at each of said exits,

each of said transponders including means for recognizing an information signal received from any of said entrance transceivers as each said vehicle carrying each said transponder travels past said entrance transceivers and for storing said information in its memory wherein said information signal is indicative of the location of the one of said roadway entrances at which each said vehicle entered said highway,

said exit transceivers including means for signaling each of said transponders to transmit to said associated exit transceiver said information signal indicative of the one of said entrances at which its associated vehicle entered said roadway, and

said independent data processor including means for signaling said transceivers associated with said roadway exits to transmit to said independent data processor said information signals relating to where said vehicles entered said roadway in relation to where said vehicles exited said roadway, and means for processing said information to determine traffic patters of vehicles entering and exiting said roadway.

5. Apparatus for the analysis and management of vehicle traffic along a roadway comprising,

a plurality of transceivers positioned adjacent said roadway, each of said transceivers including means for transmitting radio frequency signals toward said roadway, said signals including information signals including a location of said transceiver, and a current date and time,

a plurality of transponders, each of said transponders being located in separate ones of said vehicles passing along said roadway, each of said transponders including a data processor, a memory, and a receiver/transmitter, intercoupled such that said information signals transmitted from said transceiver can be received, and processed in said data processor and at least a subset of said information signals can be stored in said memory in at least one of, received and processed form, and

independent data processor means coupled to said transceiver for two-way communication with said transceiver,

wherein each of said transponders includes a user interface means for allowing a vehicle operator to enter information pertaining to said vehicle, including at least one of number of passengers, number of axles, vehicle weight, vehicle identification number, and vehicle class, into said memory included in said transponders, and

wherein each of said transponders includes audio/visual interface means coupled to said data processor, to said memory and to said receiver/transmitter, for providing at least one of an audio and a visual signal to a vehicle operator wherein said signal is indicative of at least one of an instruction received from said transceiver to input by way of said user interface, at least one of the number of passengers, the number of axles, vehicle weight, vehicle identification number and vehicle class.

6. Apparatus in accordance with claim 5 wherein said independent data processor includes means for signaling vehicle operators by way of said transceivers and said transponders to input at least one of said number of passengers, number of axles, vehicle weight, vehicle identification number, and vehicle class.

7. Apparatus in accordance with claim 6 wherein said transceiver includes means for signaling said transponders to transmit an information signal indicative of at least one of said number of passengers, number of axles, vehicle weight, vehicle identification number and vehicle class.

8. Apparatus in accordance with claim 7 wherein said transceiver includes means responsive to said information signal transmitted from said transponder and for signaling said transponders to select at least one of a particular alternate route and a particular toll lane.

9. Apparatus in accordance with claim 6 wherein said independent data processor means includes means for signaling said transceiver to transmit, to said independent data processor means, said information signal indicative of at least said number of passengers, number of axles, vehicle weight, vehicle identification number, and vehicle class.

10. Apparatus in accordance with claim 9 wherein said independent data processor means includes means for processing said information signal indicative of at least said number of passengers, number of axles, vehicle weight, vehicle identification number, and vehicle class, to determine traffic patterns regarding vehicles using said roadway.

11. Apparatus in accordance with claim 10 wherein said independent data processor means includes means responsive to said information signal for communicating to said transceiver to transmit a command signal to said transponders wherein said command signal includes at least one of a toll lane suggestion and an alternate route suggestion.

12. Apparatus in accordance with claim 11 wherein said transceiver includes means responsive to a communication received from said independent processor means for transmitting, to said transponders, command signals including at least one of a toll lane suggestion and an alternate route suggestion.