CO CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
11.
When driving in heavy traffic, the safest speed is:
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the posted speed limit.
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slower than the speed of other traffic.
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slightly higher than the speed of other traffic.
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the speed of traffic.
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12.
When checking the engine compartment, which of the following should you check?
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Windshield washer fluid level.
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Engine oil level.
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Battery fluid level.
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All of the above.
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13.
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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shifting into neutral may help slow the vehicle.
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pumping the brake pedal may generate enough hydraulic pressure to stop 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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14.
To know when to shift, you can use each of the following except:
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perception distance.
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engine speed.
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engine sounds.
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road speed.
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15.
A cardboard box on the road:
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should always be driven over to avoid sudden direction changes.
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may contain some solid material capable of causing damage.
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will never damage vehicle parts if driven over.
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is likely to be empty and should not be considered a hazard.
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16.
Your safety equipment must include:
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a dimmer switch.
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a properly charged and rated fire extinguisher.
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an inter-axle differential lock.
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spare electrical fuses (only if your vehicle is equipped with circuit breakers).
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17.
When the temperature drops, which of the following surfaces will become icy first?
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Curves
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Off-ramps
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Underpasses
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Bridges
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18.
Serious traffic violations include:
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driving a CMV without obtaining a CDL.
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erratic lane changes.
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excessive speeding.
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All of the above.
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19.
To recognize when it's time to shift up to a higher gear, use:
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engine speed (rpm) and road speed (mph).
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engine sounds and road signs.
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engine speed (rpm) and road signs.
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road speed (mph) and engine oil temperature.
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20.
Under-loaded front axles can:
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cause the drive wheels to spin easily.
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cause poor traction.
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make the steering axle weight too light to steer safely.
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All of the above.
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