HAZMAT CDL PRACTICE TEST - WYOMING
11.
Air brakes use ________ to make the brakes work.
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compressed gases
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compressed oil
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compressed air
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compressed gas cylinders
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12.
When a tire fails, you should:
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brake in a way that will keep your
vehicle in a straight line.
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push the brake pedal down gradually.
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stay off the brake.
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apply the brakes as hard as you can without locking the wheels.
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13.
If you get stuck on the railroad tracks, the first thing you should do is:
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immediately get out of the cab and move away from the tracks.
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try to move your vehicle until you see the train.
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stay in your vehicle and call 911.
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scream for help.
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14.
Placards are:
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devices placed below a vehicle to improve traction.
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a type of safety equipment.
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signs placed on a vehicle to identify the hazard class of the cargo.
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signs put inside a vehicle used to warn others of hazardous materials.
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15.
When driving in heavy traffic, the safest speed is:
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slower than the other vehicles.
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the same speed as the other vehicles.
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faster than the other vehicles.
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half the speed of the other vehicles.
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16.
Before each trip, you must make sure:
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the cargo has a high center of gravity.
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the cargo is balanced and secured.
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the truck is overloaded.
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your cargo obscures your view to the sides.
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17.
Overloading can have bad effects on all of the following except:
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Steering
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Exhaust system
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Braking
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Speed control
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18.
Passive railroad crossings:
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should never be crossed using a CMV.
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have at least one traffic control device.
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do not have traffic control devices.
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usually have a person directing traffic.
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19.
At a rest stop you discover your hazardous materials shipments is leaking from the vehicle. There is no phone around. You should:
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send someone for help with all the necessary information.
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drive slowly and cautiously until you reach a phone booth.
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leave your truck parked with emergency lights and go look for help.
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None of the above.
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20.
You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
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Brake hard to slow the vehicle, then steer sharply onto the pavement.
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Keep moving at the present speed and steer very gently back onto the pavement.
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If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
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None of the above.
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