North Carolina CDL — General Knowledge Practice Test 1

1.During the seven-step inspection, why should the driver take the ignition key along while walking around the vehicle?
To keep the battery from drainingTo prevent anyone from starting or moving it while you inspectTo reset the air pressure gaugeSo the dash lights stay on
2.What is 'controlled braking' in an emergency stop?
Pushing the pedal to the floorUsing only the parking brakePumping the pedal rapidlyBraking as hard as possible without locking the wheels
3.Why should you not simply take a posted bridge or overpass height at face value?
Posted heights already include a two-foot cushionClearance signs apply only to buses and coachesThe number given is the width of the opening, not its heightNew paving or packed snow may leave less room than the sign claims
4.What does an 'L' restriction on a CDL indicate?
No air-brake-equipped CMVIntrastate commerce onlyNo cargo tanksNo manual transmission
5.How can you warn drivers behind you that you are about to slow down?
Tap the brake pedal to flash your brake lightsTurn off your headlightsSound the horn twiceTurn the wheel back and forth
6.The manual says the heaviest parts of a load should be placed where?
As low as possibleAs high as possibleAll over the front axleAll toward the rear
7.How far ahead does the manual recommend that good drivers look?
Only as far as the vehicle aheadAbout 12 to 15 secondsAbout 3 to 5 secondsAbout 30 seconds
8.A trailer's ABS malfunction lamp is usually located where?
On the right sideOn the left sideOn the rear doorsInside the cab only
9.How many driver's licenses may a commercial driver legally hold?
OneAs many as neededTwoOne per state you work in
10.Why should you double-check both directions when crossing multiple tracks?
Trains never use two tracksThe bells will always warn youA train on one track can hide another on a second trackThe gates always protect you