CDL GENERAL KNOWLEDGE TEST (TEXAS) - PRACTICE TEST
11.
Parking brakes are:
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not required on buses.
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not required on trailers.
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not required on commercial vehicles with air brakes.
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required on all vehicles.
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12.
Which of the following is NOT true about escape ramps?
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Escape ramps use a long bed of loose, soft material to slow runaway vehicles.
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Escape ramps are found on many mountain downgrades.
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Escape ramps are made to stop runaway vehicles safely.
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Any driver who loses brakes going downhill should avoid using an escape ramp, if possible.
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13.
When should you be particularly careful about high winds?
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When going downhill
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When emerging from a tunnel
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When driving in winter
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When driving at night
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14.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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shifting into neutral may help slow the vehicle.
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the parking brake should never used to slow the vehicle.
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All of the above.
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15.
Combination vehicles _________ than single CMVs.
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are safer in bad weather
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are much easier to drive
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require more driving skill
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All of the above.
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16.
Transporting hanging meat requires special attention. Why?
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Because refrigerated trucks have less traction.
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Because hanging meat can be an unstable load with a high center of gravity.
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Because you have to drive fast to get it delivered fresh.
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All of the above.
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17.
When inspecting your vehicle for suspension system defects, look for:
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leaking shock absorbers.
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missing or broken leaves in any leaf spring.
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cracked or broken spring hangers.
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All of the above.
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18.
Drivers transporting cargo are responsible for:
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recognizing overloads.
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making sure the cargo is properly secured.
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inspecting the cargo.
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All of the above.
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19.
When driving a 60-foot truck at 50 mph, your minimum following distance should be:
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5 seconds
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7 seconds
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6 seconds
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3 seconds
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20.
What should you do to test your hydraulic brakes for leaks?
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Pump the brake pedal three times, then apply pressure for 9 seconds.
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Hold the brake pedal down for five seconds, then pump it three times.
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Pump the brake pedal five times, then apply pressure for three seconds.
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Pump the brake pedal three times, then apply pressure to the pedal and hold for five seconds.
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