CDL PRACTICE TEST - GENERAL KNOWLEDGE (TEXAS)
11.
Which of the following is NOT one of the four a basic skills needed to operate a commercial vehicle?
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Ability to accelerate
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Ability to multitask while driving
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Ability to steer
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Ability to back the vehicle safely
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12.
In Texas, it is unlawful for commercial motor vehicles to:
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change lanes on the highway.
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use the horn after 11 pm.
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coast down any grade.
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drive more than 15 mph below the posted speed limit.
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13.
When driving at night, if drivers of oncoming vehicles do not put their low beams on, you should:
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look slightly to the right at a right lane or edge marking, until the vehicles pass.
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look directly at the headlights.
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flash your high beams to remind the other drivers to use their low beams.
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pull off the road and stop.
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14.
Total stopping distance equals:
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Braking distance + viewing distance
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Perception distance + reaction distance + braking distance
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Reaction distance - following distance + braking distance
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Perception distance + braking distance
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15.
Class 1 hazardous materials include:
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Flammable solids
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Radioactive materials
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Flammable liquids
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Explosives
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16.
Retarders:
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reduce braking distance.
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reduce the danger of slipping.
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improve gas mileage.
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help slow a vehicle, reducing the need for using brakes.
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17.
When driving at night, you should:
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look directly at the lights of oncoming vehicles.
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put your own high beams on if other drivers don't put their low beams on.
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use dark lenses if possible.
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drive slowly enough to see obstacles with your headlights.
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18.
Which of these vehicles must come to a complete stop at railroad grade crossings?
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Heavy equipment
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Trucks carrying explosives
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School buses
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All of the above.
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19.
Overloading can have bad effects on all of the following except:
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Speed control
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Braking
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Steering
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Exhaust system
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20.
Front-end header boards:
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protect you from your cargo in case of a crash.
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block the forward movement of your cargo.
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protect you from your cargo in case of an emergency stop.
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All of the above.
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