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The Commercial Drivers License (CDL) Study Guide

Speed and Distance Ahead

speedrange

You should always be able to stop within the distance you can see ahead. Fog, rain or other conditions may require that you slow down to be able to stop in the distance you can see. At night, you can’t see as far with low beams as you can with high beams. When you must use low beams, slow down.

Speed and Traffic Flow

Speed on Downgrades

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