The Commercial Drivers License (CDL) Study Guide

 

Look at the Gauges

  • Oil pressure. Should come up to normal within seconds after engine is started.
  • Ammeter and/or voltmeter. Should be in normal range(s)
  • Coolant temperature. Should begin gradual rise to normal operating range.
  • Engine oil temperature. Should begin gradual rise to normal operating range.

Warning lights and buzzers.

  • Oil, coolant, and charging circuit warning lights should go out right away.
  • Low air pressure lights/ buzzers should go out after minimum air pressure is built up.

Continue

Check Condition of Controls.

Check Mirrors and Windshield.

Check Seat Belts.

Check Emergency and Safety Equipment

 

You can click on the safety tips for more information.

New! Practice Tests for CDL

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