Installing new traffic signals in Japan reduced crash frequency by 75 to 78 percent and upgrading existing traffic signals reduced accidents up to 65 percent.
Date Posted
09/21/2000
Identifier
2007-B00384
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New installation of traffic signals

 

  • Reduced the number of traffic accidents by 75 to 78 percent.
  • Reduced accidents between pedestrians and vehicles by 87 percent.
  • Reduced total casualties by 75 percent.
  • Reduced accidents between vehicles by 73 percent.
  • Reduced surprise encounter accidents (most frequent accidents) by 90 percent.
  • Reduced right-turn accidents (second most frequent accident) by 69 percent.


Traffic signal upgrades

 

 

  • Reduced accidents 4 to 28 percent in large areas.
  • Reductions accidents 35 to 65 percent at individual locations such as corridors.
  • Reduced surprise encounter accidents by 76 percent with semi-sensitive control.
  • Reduced accidents between pedestrians and vehicles by 70 percent with pedestrian-activated local control.
  • Reduced surprise encounter accidents by 63 percent using semi-sensitive local control.
  • Reduced accidents between vehicles by 36 percent with high-speed sensitive control.
  • Reduced accidents between vehicles by 33 percent with dilemma-eliminating control.
  • Reduced accidents between vehicles by 36 percent with right-turn sensitive control.
  • Reduced accidents between vehicles by 46 percent with multi-phasing control.
  • Reduced accidents between pedestrians and vehicles by 79 percent with elderly pedestrian activated control.

 

Reduction of Traffic Accidents and Improvement of Road Traffic Produced by 5th Five-Year Project for the Installation and Upgrading of Traffic Safety Facilities (for ITS Deployment in Japan)

Reduction of Traffic Accidents and Improvement of Road Traffic Produced by 5th Five-Year Project for the Installation and Upgrading of Traffic Safety Facilities (for ITS Deployment in Japan)
Source Publication Date
03/02/1998
Author
Saito, Takeshi, et al.
Publisher
Japan Traffic Management and Technology Association
Goal Areas
Deployment Locations