The police are advising motorists to reduce speed because of the fog.

由于有雾，警察告诫驾车者减慢速度。

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This tricks the drivers, forcing them to reduce speed before approaching them.

这迫使司机们在接近他们的时候减速。

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Gears change within milliseconds, without having to reduce speed, decrease engine power or use a clutch.

换档能够在毫秒级的时间内完成，无须减速，无须降低引擎动力，同样不需要使用把手。

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Remember during the first energy crisis when the Feds forced the states to reduce speed limits to 55 mph, to save gasoline?

FORBES: Banning Driver Use Of Phones Is Hopeless

Researchers analyzed the crashes of new drivers in North Carolina and found three common mistakes: failure to reduce speed, inattention, and failure to yield.

FORBES: Study Shows When Teen Drivers Most Likely to Crash

Race for Water, in the lead at that point in the race, was forced to reduce speed to inspect the damage and initiate emergency repairs.

UNESCO: EDUCATION