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The static or dynamic roadway travel time system to determine the path with least travel time between two places

  • US 20060200303A1
  • Filed: 02/24/2006
  • Published: 09/07/2006
  • Est. Priority Date: 02/24/2005
  • Status: Abandoned Application
First Claim
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1. A static process for modeling a travel time system, comprising:

  • (a) Converting traffic data in the form of vehicles per hour, volume and occupancy, volume and density, speed, and travel time into Gaussian random variables of travel time (b) Associating one or more Gaussian random variables from (a) with a link of a graph representing a roadway network (c) Acquiring user input in the form of text, speech, or graphical to determine departure location and destination location, and identifying nodes in the graph from (b) corresponding to locations selected by user (d) Providing an estimated travel time for each link of the graph from (b) using Gaussian random variables from (b) (e) Simulating several scenarios of travel time using estimated travel time from (d) for each link connecting nodes identified in (c), and determining the shortest travel time path using shortest path algorithm for each scenario of travel time (f) Estimating least travel time by selecting path most visited during simulation in (e) (g) Providing results from (f) in speech and graphical output.

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