| 摘要 |
The "Controlled Grip Track" comprises a solid bed and the surfacing material composed of natural materials, such as soil, sand, gravel or bigger stones. Track in this case means a fenced road of a surface over 300 square meters. Surfacing material, depending on the material or combination of materials to be chosen, offers reduced grip conditions simulating the drive on a respective natural field. The solid bed prevents erosion on the track surface from usage by cars or other reasons, eliminating the likelihood for other anomalies to come about, except for those that we have already accepted when choosing the surfacing material composition. Also, it interrupts the mixing of the surfacing material with natural ground below the track.
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