Method and system for monitoring speed of a vehicle

• US 8,626,418 B2
• Filed: 09/18/2006
• Issued: 01/07/2014
• Est. Priority Date: 12/15/2005
• Status: Active Grant

• Current Assignee: Kyndryl Incorporated
• Original Assignee: International Business Machines Corporation
• Inventors: Boulet, Bertrand, Bredin, Francis
• Primary Examiner(s): To, Tuan C.
• Application Number:
  US12/095,532
• Publication Number:
  US 20110010042A1
• Time in Patent Office: 2,668 Days
• Field of Search: 701/29, 701/33, 701/96, 340/905, 180/170, 342/104, 342/118
• US Class Current: 701/96
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P

Abstract

A method and system for monitoring speed of a vehicle moving along a road that includes risk zones. The method determines: road conditions for each risk zone; a threshold speed of each risk zone based on the road conditions and on a distance to a posted speed limit within a high risk zone; a geographical position of the vehicle, a current risk zone in which the vehicle is moving based on the stored geographical position of the vehicle; and a current speed of the vehicle moving in the current risk zone which exceeds the threshold speed of a particular risk zone, resulting in performing a subsequent action (triggering an alarm within the vehicle, presenting a message to a driver in the vehicle, and/or automatically regulating the speed of the vehicle). The action is specific to the particular risk zone and dependent on the road conditions.

Claims

1. A method for monitoring speed of a vehicle moving in a speed controlled road section of a road, said vehicle having a computing system therein, said speed controlled road section comprising a plurality of risk zones, said plurality of risk zones comprising a high risk zone that includes a posted speed limit at a location in the high risk zone, said method comprising:

determining real-time road information pertaining to road conditions for each risk zone;

storing the determined road condition information in the computing system;

determining a threshold speed of the high risk zone as equal to the posted speed limit;

determining a threshold speed of each risk zone other than the high risk zone, based on the stored road condition information and on a distance from each risk zone other than the high risk zone to the location of the posted speed limit within the high risk zone;

storing the determined threshold speed of each risk zone in the computing system;

determining a geographical position of the vehicle while the vehicle is moving in the speed controlled road section;

storing the determined geographical position of the vehicle in the computing system;

determining a current risk zone of the plurality of risk zones in which the vehicle is moving, based on the stored geographical position of the vehicle;

determining a current speed of the vehicle moving in the current risk zone;

ascertaining that the current speed of the vehicle exceeds the stored threshold speed of a particular risk zone selected from the group consisting of the current risk zone and another risk zone of the plurality of risk zones; and

responsive to said ascertaining, performing an action selected from the group consisting of triggering an alarm within the vehicle, presenting a message to a driver in the vehicle, automatically regulating the speed of the vehicle by the computing system, and combinations thereof, wherein the action is specific to the particular risk zone and dependent on the stored road condition information.

2. The method of claim 1, wherein the particular risk zone is the current risk zone.

3. The method of claim 1, wherein the particular risk zone is the another risk zone.

4. The method of claim 1, wherein each risk zone is a unique portion of the road defined by a watching area of an associated camera posted along the road.

5. The method of claim 1, wherein the road conditions consist of upcoming construction areas, upcoming traffic flow, road weather conditions, road grades, distance to emergency exit ramps, road weight limits, shoulder widths, and shoulder distances.

6. The method of claim 1, wherein the plurality of risk zones comprise a warning zone, a critical zone, the high risk zone, and a roadway zone appearing spatially along the road in a sequential order of the warning zone, the critical zone, the high risk zone, and the roadway zone.

7. The method of claim 6, wherein after said determining the current speed of the vehicle the method further comprises interactively cycling through a plurality of iterations such that each iteration preceding a last iteration of the plurality of iterations comprises determining that the current speed of the vehicle does not exceed the threshold speed of the warning zone, the threshold speed of the critical zone, the threshold speed of the high risk zone, and the threshold speed of the roadway zone, and wherein the last iteration comprises said ascertaining such that the particular risk zone is the warning zone, the critical zone, the high risk zone, or the roadway zone.

8. The method of claim 6, wherein the particular risk zone is the warning zone, wherein the action comprises presenting the message to the driver, and wherein the message comprises information pertaining to the current speed of the vehicle and the distance from the vehicle to the location of the posted speed limit within the high risk zone to warn the driver.

9. The method of claim 6, wherein the particular risk zone is the critical zone, wherein the action comprises presenting the message to the driver, and wherein the message comprises information pertaining to an urgency of changing the current speed of the vehicle in consideration of the posted speed limit.

10. The method of claim 6, wherein the particular risk zone is the critical zone, wherein automatic speed regulation is activated in the vehicle, wherein the action comprises automatically regulating the current speed of the vehicle by the computing system in consideration of the posted speed limit.

11. The method of claim 6, wherein the current risk zone is the roadway zone, wherein automatic speed regulation is activated in the vehicle, and wherein the method further comprises automatically setting the current speed of the vehicle by the computing system in consideration of a vehicle speed limit of the roadway zone.

12. The method of claim 6, wherein the warning zone, the current risk zone and the critical zone each consist of n lanes, wherein the roadway zone consists of m lanes, wherein n and m are each at least 1, and wherein m is unequal to n.

13. The method of claim 6, wherein the method further comprises:

storing a record in a log file of the computing system that the current speed of the vehicle exceeds the stored threshold speed of the particular risk zone; and

after said storing the record in the log file, wirelessly transmitting the record to a traffic central database located external to the vehicle.

14. The method of claim 1, wherein the method further comprises:

storing a record in a log file of the computing system that the current speed of the vehicle exceeds the stored threshold speed of the particular risk zone; and

after said storing the record in the log file, wirelessly transmitting the record to a traffic central database located external to the vehicle.

15. The method of claim 1, wherein the risk zones are sequenced in a direction of travel by the vehicle on the road such that a boundary between the risk zones in each pair of successive risk zones is perpendicular to the direction of travel by the vehicle on the road.

16. An apparatus comprising a computing system in a vehicle, said computing system comprising a processor and a computer readable storage medium having program code stored therein, said program code configured to be executed by the processor to implement a method for monitoring speed of the vehicle moving in a speed controlled road section of a road, said speed controlled road section comprising a plurality of risk zones, said plurality of risk zones comprising a high risk zone that includes a posted speed limit at a location in the high risk zone, said method comprising:

determining real-time road information pertaining to road conditions for each risk zone;

storing the determined road condition information in the computing system;

determining a threshold speed of the high risk zone as equal to the posted speed limit;

determining a threshold speed of each risk zone other than the high risk zone, based on the stored road condition information and on a distance from each risk zone other than the high risk zone to the location of the posted speed limit within the high risk zone;

storing the determined threshold speed of each risk zone in the computing system;

determining a geographical position of the vehicle while the vehicle is moving in the speed controlled road section;

storing the determined geographical position of the vehicle in the computing system;

determining a current risk zone of the plurality of risk zones in which the vehicle is moving, based on the stored geographical position of the vehicle;

determining a current speed of the vehicle moving in the current risk zone;

ascertaining that the current speed of the vehicle exceeds the stored threshold speed of a particular risk zone selected from the group consisting of the current risk zone and another risk zone of the plurality of risk zones; and

responsive to said ascertaining, performing an action selected from the group consisting of triggering an alarm within the vehicle, presenting a message to a driver in the vehicle, automatically regulating the speed of the vehicle by the computing system, and combinations thereof, wherein the action is specific to the particular risk zone and dependent on the stored road condition information.

17. The apparatus of claim 16, wherein the particular risk zone is the current risk zone.

18. The apparatus of claim 16, wherein the particular risk zone is the another risk zone.

19. A computer program product comprising a computer readable storage medium having a program code stored therein, said program code configured to be executed by a processor of a computing system within a vehicle to implement a method for monitoring speed of the vehicle moving in a speed controlled road section of a road, said speed controlled road section comprising a plurality of risk zones, said plurality of risk zones comprising a high risk zone that includes a posted speed limit at a location in the high risk zone, said method comprising:

determining real-time road information pertaining to road conditions for each risk zone;

storing the determined road condition information in the computing system;

determining a threshold speed of the high risk zone as equal to the posted speed limit;

determining a threshold speed of each risk zone other than the high risk zone, based on the stored road condition information and on a distance from each risk zone other than the high risk zone to the location of the posted speed limit within the high risk zone;

storing the determined threshold speed of each risk zone in the computing system;

determining a geographical position of the vehicle while the vehicle is moving in the speed controlled road section;

storing the determined geographical position of the vehicle in the computing system;

determining a current risk zone of the plurality of risk zones in which the vehicle is moving, based on the stored geographical position of the vehicle;

determining a current speed of the vehicle moving in the current risk zone;

ascertaining that the current speed of the vehicle exceeds the stored threshold speed of a particular risk zone selected from the group consisting of the current risk zone and another risk zone of the plurality of risk zones; and

responsive to said ascertaining, performing an action selected from the group consisting of triggering an alarm within the vehicle, presenting a message to a driver in the vehicle, automatically regulating the speed of the vehicle by the computing system, and combinations thereof, wherein the action is specific to the particular risk zone and dependent on the stored road condition information.

20. The computer program product of claim 19, wherein the particular risk zone is the current risk zone.