Introduction of Offset Automatic Generation Method Taking Account of Safety, Smoothness and Environment and Sub-Area Combination Function

This paper introduces the overview of an automatic offset generation method and its result of applying to a trunk road in Tokyo. The Metropolitan Police Department (MPD) has adopted the pattern selection control method to the STREAM, traffic signal control system of the MPD, to obtain the optimum offset. Since the optimum offset is selected among the offsets prepared in advance, it is difficult to correspond to current traffic flow and its change properly and quickly. Therefore, the MPD has adopted an automatic offset generation method to the STREAM since 2007. This method simulates the traffic flow in the sub-area (the minimum unit of signalized intersections whose cycles are all same) with the real-time traffic information and obtains the optimum offset to the current traffic flow. The method considers the traffic accident risk as well as the congestion relief. Moreover the method can calculate the offset of all combination of the sub-areas and select the best offset depending on their conditions to optimize the whole objective roads.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Maps; Photos; Tables;
  • Pagination: 10p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01144633
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 1 2009 9:16AM