VEHICLE INSPECTION CDL TEST DISTRICT OF COLUMBIA
11.
What should you do to test your vehicle's low air pressure warning signal?
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With the key in the "on" or "battery charge" position, rapidly apply and release the foot brake.
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With the engine running, put the vehicle in a forward gear and attempt to drive forward.
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Pump the brakes until the air pressure drops below 80 psi.
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Release the parking brake valve and the tractor protection valve and reduce the air pressure by stepping on and off the brake pedal.
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12.
When approaching a vehicle for a pre-trip inspection, you should:
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start the engine and listen for unusual noises.
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look under the vehicle for hazards to vehicle movement.
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make sure the parking brake is on.
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look under the vehicle for fuel leaks, fresh oil, coolant or grease.
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13.
If loose or missing, _______ may cause movement between the frame and fifth wheel assembly.
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locking pins
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mounting bolts
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safety chains
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electric connectors
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14.
All CDL vehicle inspection tests include:
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an engine inspection and tire check.
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an in-cab inspection and background check.
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an engine start and in-cab inspection.
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an engine start and an inspection of the entire vehicle.
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15.
When checking the steering system for defects, you should look for:
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cut or cracked valve stems.
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loose, broken, or missing tailpipes.
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missing or broken leaves in any leaf spring.
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bent, loose, or broken parts, such as tie rods.
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16.
When checking tires, which of the following is not a problem?
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Cracked valve stems
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Radial and bias-ply tires used together
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Too much air pressure
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4/32 inch tread depth on front tires
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17.
Which of the following is not part of the air brake system?
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Alcohol evaporator
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Air compressor
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Air storage tanks
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Air filter
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18.
When performing the stop/start maneuver during the skills test, once stopped you should do all of the following, except:
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Activate your right turn signal.
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Cancel your turn signal.
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Activate your 4-way emergency flashers.
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Apply the parking brake.
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19.
During the vehicle inspection test, CDL applicants may be asked to:
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change a tire.
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replace a reflective triangle.
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replace the emergency flashers.
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None of the above.
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20.
How can you tell if your vehicle is equipped with ABS?
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Trailers will have yellow ABS malfunction lamps on the left side.
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Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
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Look for yellow ABS malfunction lamps on the instrument panel.
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All of the above.
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