JARI:Japan Automobile Research Institute

Peripheral oval road

Peripheral oval road

Installed around the high-speed oval track, the circumference road simulates a suburban asphalt road for testing ordinary running performance. Equipped with rows of lights for testing at night.

Main test items

  • Running performance test
  • Riding comfort test
  • Durability performance test
  • Noise characteristics test


  • Asphalt pavement
  • Circumference 5,722m; Width 7m
  • Cross slope
    Straight seg. 2%, two ways; Curve seg. 2~3% banking
  • Longitudinal slope: Maximum 5.9%
  • Minimum radius of curve: 60m
  • Designed load on wheel: 5 tons