Word forms: (regular plural) rolling roads
(Automotive engineering: Design and performance) A rolling road is a piece of machinery on which the wheels of a vehicle can ride in order to test how well the vehicle works under road conditions that are created artificially.
⇒ Fuel efficiency figures are obtained from simple tests at different speeds on a rolling road. ⇒ Final tuning should only be done by an experienced operator on a dynamometer or a rolling road. ⇒ With the car on the rolling road, the engine is placed under load with the throttle wide open.
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