Mazda Mine Proving Ground, Japan

December 27th, 2007 by Darren Cottingham

In order to give more comprehensive vehicle performance and safety testing, Mazda has extended its Mine Proving Ground in Mine City, Yamaguchi Prefecture, in western Japan with a skid pad, free flat course and winding track.

The skid pad is to test vehicles’ ability to turn sharply at high speed, the ‘free flat course’ is to evaluate high-speed slalom performance, and the winding track is to assess high-speed vehicle handling.

Specifications of the Mine Proving Ground

Course name Outline Used for
Circuit course

(existing track)

Total length: 3.33 km

Track width: 10 to 15 m

  • Improving test driving techniques
  • Driving schools for other organizations
  • Sales promotional activities
Skid pad


Radius: 80 m

Surface: round and flat

Length of runway: 270 m

  • Evaluating turning performance
  • Testing rollover resistance
  • “Fishhook” dynamic maneuvering tests
Free flat course


Total length: 400 m

Width x Length: 40 m x 300 m plus 80 m x 100 m

Surface: flat

Connected to the winding course

  • Testing of high-speed slalom performance
  • Testing of double lane-change performance
Winding course


Total length: 2.9 km circuit

Radius of corners: 50 to 200 m

Difference in elevation: 45 m

Course width: 8 m

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