| 摘要 |
A vehicle testing assembly for performing tests to determine certain characteristics of a motorized vehicle having a set of driven wheels. The testing assembly includes an annular roller with an outer surface. The roller is preferably formed of a steel composition. A controller is connected to the roller for retrieving data from the roller during a rotation of the roller. The testing assembly is characterized by a coating being applied to the outer surface of the roller to define a contact surface of the roller. The coating is formed of a coating composition different from the steel composition of the roller. Preferably, the coating composition comprises nickel and phosphorus. During operation of the vehicle testing assembly the wheel of the vehicle continuously contacts the contact surface of the coating to provide an accurate testing of the characteristics of the vehicle as the roller rotates.
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