Method for determining a travel time

• US 20050107945A1
• Filed: 11/14/2002
• Published: 05/19/2005
• Est. Priority Date: 01/15/2002
• Status: Abandoned Application

• Current Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Original Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Inventors: Hiller, Andreas, Konhaeuser, Peter
• Application Number:
  US10/500,651
• Publication Number:
  US 20050107945A1
• Time in Patent Office: Days
• US Class Current: 701/201
• CPC Class Codes: G01C 21/3415 Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents
• CPC Class Codes: G01C 21/3492 employing speed data or traffic data, e.g. real-time or historical traffic control systems for road vehicles involving transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/0965 responding to signals from another vehicle, e.g. emergency vehicle
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/096844 where the complete route is dynamically recomputed based on new data

Abstract

A method for determining a journey time is proposed for a journey route for a following vehicle which is traveling in a sequence of vehicles. This method comprises the steps: journey profile data is registered by at least one vehicle traveling ahead in the sequence, the journey profile data comprising at least one travel time or data from which travel time can be determined, for a route component between two positions on the journey route, and the journey time for a route comprising the route component is calculated from the journey profile data, journey profile information which comprises the journey profile data or the journey time being transmitted to at least one receiving following vehicle using vehicle-to-vehicle communication by at least one transmitting vehicle traveling ahead. In order to determine the journey time, the journey information of a plurality of vehicles is preferably transferred to following vehicles by forming a transmission chain.

Claims

1-13. -13. (canceled)

14. A method for determining a journey time for a journey route for a following vehicle traveling in a sequence of vehicles, the method comprising the steps of:

collecting journey profile data by a vehicle traveling ahead in the sequence, the journey profile data including at least a travel time or data permitting determination of the travel time for a route component between a first and a second position on the journey route;

calculating a journey time in the vehicle collecting the journey profile data for a route including the route component from the journey profile data; and

transmitting journey profile information including the journey time or the journey profile data using vehicle-to-vehicle communication from the vehicle traveling ahead to a receiving following vehicle.

15. The method as recited in claim 14 wherein the second position is the current position of the following vehicle and the first position is a location on the journey route ahead of the following vehicle.

16. The method as recited in claim 14 wherein the first and second positions have fixed distances.

17. The method as recited in claim 14 wherein the receiving following vehicle calculates a further journey time as a function of the journey time and a travel time of the receiving following vehicle over a second route component, and transmits the further journey time to a further following vehicle.

18. The method as recited in claim 14 wherein the journey profile information transferred to the receiving following vehicle is restricted to a specific radius around the transmitting or receiving vehicles.

20. The method as recited in claim 14 wherein the journey time is an overall journey time including the travel time and a further journey time received from another vehicle traveling ahead in the sequence.

21. The method as recited in claim 14 wherein the transmission of the journey profile information by the vehicle traveling ahead is triggered by predefined journey section boundaries being reached and/or by reception of other journey profile information of another vehicle traveling ahead.

22. The method as recited in claim 14 wherein the transmission of the journey profile information by the vehicle traveling ahead is triggered by reception of a journey information inquiry.

23. The method as recited in claim 22 wherein the journey information inquiry is transmitted by one vehicle to the vehicle traveling ahead in the sequence, and the vehicle traveling ahead in the sequence transfers the journey information inquiry to a further vehicle traveling ahead, this step being repeated until the journey information inquiry has been transferred to a frontmost vehicle traveling ahead, the frontmost vehicle traveling ahead having already reached a destination specified in the journey information inquiry or having already reached a next journey section boundary.

24. The method as recited in claim 23 wherein the journey information inquiry contains a current vehicle position of the vehicle transmitting the journey information inquiry, and the journey profile information transferred to at least one following vehicle comprises an overall travel time between the current vehicle position and the destination or the journey section boundary, the overall travel time being calculated by summing travel times transmitted back, from the frontmost vehicle traveling ahead, to the vehicles involved in the passing-on of the journey information inquiry.

25. The method as recited in claim 14 wherein journey times are determined for at least two alternative journey routes, an optimum journey route being determined by selecting the alternative journey route having a shortest journey time.

19. The method as recited in claim 19 wherein the radius is determined by chronological accessibility.

26. A method for determining a journey time for a journey route for a following vehicle traveling in a sequence of vehicles, a first vehicle in the sequence of vehicles traveling a first travel time for a first route component on the journey route, the method comprising the steps of:

receiving the first travel time from the first vehicle at a second vehicle following the first vehicle;

calculating at the second vehicle a first journey time for the second vehicle as a function of the first travel time;

determining at the second vehicle a second travel time of the second vehicle over a second route component on the journey route; and

transmitting the first journey time for the second vehicle and the second travel time from the second vehicle to a third vehicle.

27. The method as recited in claim 26 wherein the third vehicle calculates a further journey time using the first journey time for the second vehicle and the second travel time.