MISSOURI CDL PRACTICE TEST - GENERAL KNOWLEDGE
41.
The service brake system:
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applies and releases the parking brakes.
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applies and releases the brakes when you use the brake pedal during normal driving.
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applies and releases the emergency brake.
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42.
Name two situations in which it may not be safe to operate your vehicle at legal maximum weights.
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In heavy traffic or at night
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During bad weather or in mountains
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Over bridges or through tunnels
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43.
Under-loaded front axles can:
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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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44.
The posted speed limit for a curve:
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is safe for all vehicles.
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is safe for trucks or buses, but it may be too fast for cars.
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may be too fast for many trucks or buses.
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45.
The trailer hand valve should be used:
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only on slippery surfaces.
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only when applying the brakes hard.
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only to test the trailer brakes.
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46.
The Johnson bar is a valve that:
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reduces the braking pressure to a safe level.
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works the trailer brakes.
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is installed in the first tank the air compressor pumps air to.
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47.
When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
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there is no ice on the road surface.
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the pavement is dry.
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ice has formed on the road.
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48.
Which of the following statements about engine overheating is true?
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You should never remove the radiator cap or any part of the pressurized system until the system has cooled.
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You should never shut off an overheated engine until it cools.
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Low speeds create more heat for the engine.
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49.
During a trip you should check:
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pressure gauges.
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temperature gauges.
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All of the above.
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50.
When you are driving very slowly you should:
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stay in the left lane.
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use the 4-way emergency flashers.
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avoid braking.
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