Processing detectors for the vehicle existence

The dilemma-zone avoidance control was developed in order to prevent the read-end or head-on collision, caused by the sudden stopping or the forcible approach into a junction with the traffic signal where the drivers hesitated to stop or go through when that signal changed the phase. The Tokyo Metropolitan Police Department introduced this control in 1990 and it currently operates at 13 junctions. The suitable areas for the dilemma-zone avoidance control can be places that there is a downstream place of an overpass, a decline or a section that traffic signals are installed in the long interval in the upper of them. It turned out that many rear-end or head-on collisions occur in those places from the real traffic situation within the jurisdiction. But due to the structure's limitations of the overpass, the dilemma-zone avoidance control by utilising the speed measured type of vehicle detectors those are introduced conventionally have been installed in the overpass. Then the dilemma-avoidance control with the new control method is installed as the countermeasure to prevent traffic accidents in the junction with the traffic signal located at the downstream place of the overpass. The installation of the control is described. For the covering abstract see ITRD E140665.

  • Authors:
    • ASAI, H
  • Publication Date: 2007


  • English

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Filing Info

  • Accession Number: 01151452
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Mar 1 2010 8:29AM