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Proving Ground Sundaram-Clayton Proving Ground is a 200-acre state-of-the-art testing facility located at Mappedu near Sriperumbudur, 40 kms from Chennai. The Proving Ground can be used for carrying out testing of vehicle and sub-systems. The layout of the track has been developed by MIRA, U.K and it has been constructed by Larsen & Toubro Ltd.
Straight-line Braking The straight-line track has an overall length of 1.35 kms and a maximum length of 225 m and width of 70 m at the braking area. The approach road is 1000 m long out of which 800 m is for picking up speed and 200 m for the final stabilization. Various braking surfaces such as high friction asphalt, blue basalt tiles, ceramic tiles are available. The braking test surfaces are 225 m long. On either side of the basalt and ceramic track is high friction asphalt track to enable conduct of split friction braking tests.
Crash barriers
are provided on either side of the track for safety. Further, a 200 m run-out length is
provided at the end of braking surfaces to ensure safety in the event of a
brake failure and it is followed by an arrestor pit with light aggregates
for enhanced safety. A return loop is also present to avoid retracing
vehicle along the approach road and to enable operation of test vehicles in
rotation. Blue Basalt SurfaceBasalt track is the industry standard in low friction testing surfaces. Blue Basalt is a type of rock that is melted and cast into 50 mm thick tiles. These tiles are extremely abrasion and temperature resistant and have consistent low friction over long periods. The length of blue basalt track is 225 m and it is 7 m wide. The 8 mm thick grooves act as effective drainage channels and keep the surface wet. Low Friction Ceramic Surface
These
ceramic tiled surfaces are now becoming the industry standard for test
tracks. For a length of 125 m initially, the track is pure ceramic and it is
followed by a combination of asphalt and ceramic to give intermittent high
and low friction surfaces. The track is 4 m wide initially and is 2 m wide
in checkered area. The surface has a lateral gradient of 1 % which is
required to drain water. This has little effect on sideways vehicle movement
but it avoids aquaplaning situation. High Friction Asphalt Surface
The
width of this track surface is 4 m between basalt and ceramic and 2 m on the
outer sides of basalt and ceramic. Support Facilities
The
following
support facilities are available at the Proving Ground facility to aid vehicle testing
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