A microprocessor constantly calculates the maximum permissible road speed and can brake each individual wheel if necessary.

微处理器不断地计算最大的允许行驶速度，并且能够在必要时对各车轮单独实施制动。

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However, new six-speed gearboxes should help, by matching the engine's speed more closely to the vehicle's road speed.

ECONOMIST: Fuel economy

When he examined the timings of his vehicle travelling over the road speed markings, he knew for certain he had not been driving too fast.

BBC: Taxi driver wins fight over speed camera error

Avon and Somerset Police said an officer was alerted to a Citroen Picasso travelling along Lower Hanham Road at speed, shortly before 16:00 GMT on Sunday.

BBC: Tandem crash car 'being followed' by police