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ERASED TEST, YOU MAY BE INTERESTED ONCDL general knowledge Day 1 - part B

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CDL general knowledge Day 1 - part B

test de conocimientos generales preg 63 - 122

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Driving Test

Number of questions: 60
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you are inspecting hydraulic brakes. You should pump the brake pedal three times then apply firm pressure to the pedal for five seconds. If the brakes are working properly, the pedal should: Depress slightly. Sink to the floor. Not move.
When starting a bus on a level surface with good traction, there is often no need for: parking brakes a tire check slow acceleration.
How the weight of the vehicle affects stopping distance? A fully loaded truck takes longer to stop or buses loaded with passengers take less distance than empty ones. If brakes work the same no matter what the weight of the vehicle for both trucks and buses. Empty trucks take longer to stop than if loaded. But this is not normally the case for buses.
When you are starting to move up a hill from a stop: Release the parking brakes as you apply engine power. Engage the clutch and accelerate quickly. Keep the trailer brake hand valve applied until you reach 20 mph.
What is the true about using a heater: You must have at least one extra heater such as a mirror heater, battery heater or fuel tank heater when temperatures drop below freezing. If you feel sleepy, heating up the cab with the heater will help you start alert. When driving in winter weather you should check that the heater is working properly before starting.
Why damage of the exhaust system is a danger? Noise can damage the driver's ears. Poisonous gas can enter into the cab or sleeping compartment. You can pollute the air with the exhaust smoke.
Which of these is NOT a danger when an automatic transmission is forced into a low gear at high speed? A loss of engine braking effect Damage to the transmission A loss of steering control.
Perception distance is the distance your vehicle travels from the time: Your eyes see a hazard to the time your foot pushes the brake pedal. The brain tells the foot to push the brake pedal to the time the foot responds. The eyes see a hazard to the brain knows that this is a hazard.
Extra care is needed to keep your vehicle centered in your lane because commercial vehicles: Require a lot of room to change lanes. Are often wider than other vehicles. Tend to sway from time to time.
Which of these is NOT something you should do if your headlights are not working properly? Leave on your high beams Clean your head lights Adjust headlights.
Which of the following statements about backing a heavy vehicle is NOT true? You should back and turn towards the driver's side whenever it is possible. You should use a helper and communicate with him using hand signals. Because you cannot see, you should back slowly until you slightly bump into the dock.
The distance that you should look ahead of your vehicle while driving is about ________ at a low speed. 1 block 2 block 1/2 block.
When driving in cold weather, you tire should: Provide enough tread to steer and push the vehicle through the snow. Be double the depth required in normal weather. Be checked every 100 miles or every 2 hours.
which vehicle will have the most difficulties staying in its lane during strong winds? A double with an empty trailer. A tractor pulling a loaded flatbed trailer. A triple axle vehicle with cargo.
Why does your vehicle speed naturally increase on a downgrade? gravity the engine runs smoother lack of traction.
Convex, (curved), mirrors: Makes objects appear closer than they really are Makes objects appear larger than they really are They show a wider area than flat mirrors do.
Why is it important to shift gears correctly? To keep control of the vehicle. To keep the engine warm. To keep the engine oil flowing.
What are three distances make up the total stopping distance of your truck or bus? Attention distance, Reaction distance and Slowing distance. Response distance, Observation distance and Braking distance. Perception distance, Reaction distance and braking distance.
which of these action are NOT recommended for a left turn? Start at the inside lane and swing right as you turn. Use a right hand turn lane if there are two turning lanes. Start you turn in the center of the intersection.
When you are passing a vehicle, pedestrian or bicycle, you should assume that: They may be moving into your traffic lane. They know you are passing. They see your vehicle.
In your mirror you see a car approaching from the rear. The next time you check your mirror, you do not see the car. If you wish to change lanes, you should: Wait to change lanes until you are sure that the car is not your blind spot. Ease into another lane very slowly so that cars that are beside you can get out of your way. Assume that the car has left the road and change lanes.
which of these is the proper way to signal when changing lanes? signal early and change lanes slowly and smoothly. signal before the change and move over quickly. signal after you begin changing lanes and cross over slowly.
you are driving in a area with few street lights. If you cannot see well with your headlights, which of the following actions may help? Find another route that is better lit. Even if it is out of your way. Turn your interiorlights on and adjust your instrument lights. Use your high means when legal and keep your interior lights off.
which of the following statements is true about other drivers? Mail or delivery trucks are professionals and do not pose a hazard. Drivers who use turn signals should always be trusted to turn in the direction their signal is indicating. Short term or daily rental truck drivers are often not used to the limited vision and pose a hazard.
what is true about bad weather and driving conditions? when the temperature drops, the bridges freeze before the roads. the roads are more slippery when the rain continues rather than when the rain begins. driving conditions become more dangerous when temperatures rise above freezing.
You should wear a seat belt in a moving vehicle: Only when you are driving. All the time. Only when you are on a highway.
which of these items is NOT checked for a pre-trip inspection? Whether all lights are working. Amounts of fuel in a vehicle. Cargo is secure.
which of the following statements about pre-trip inspection is true? when you park on a street, you should walk so that you face away from oncoming traffic. leave the key in the ignition so that you don't lose it while you are under the truck. if you need to tilt a cab, secure loose items so that they will not fall or break.
can state inspectors inspect your truck or bus? No Yes, but cannot put you out of service. Yes and they can put you out of service if unsafe.
To determinate blood alcohol concentration levels for a person it is necessary to know: How much a person weights. How often a person drinks alcohol. How old a person is.
the engine brake effect is greater when the engine is _________ governed RPM and the transmission is in a ________ gear: Below, higher Near, lower Above, lower.
You are driving a 40 fool vehicle at 55 mph. The road is dry and visibility is good. What is the least amount of space that you need to have in front of your vehicle? 4 seconds 5 seconds 6 seconds.
what should you do if another car is coming towards you at night with its high beams on? Flash your high beams quickly at the other driver. Look towards the right lane or edge markings of the road. Slow down and look straight ahead in your lane.
If you must stop into an oncoming lane as you make a turn, you should: Watch for oncoming traffic. Complete your turn without stopping. Back up to allow oncoming traffic to pass.
which of these is true about driving in a tunnel? Emergency flashers are required by law. Headlights are required by law. There may be strong winds when exciting.
You should use your horn when: If it helps to avoid a crash. A car in your way. You want to change a lane.
The tread depth on the vehicles front tires should be: Not less than 4/32 inch. More than 6/32 inch. Not less than 2/32 inch.
Your vehicle will be put "out of service" if ______ or more leaves in any leaf spring are missing. 1/4 1/3 1/2.
A hazzard: Is any road condition or other user that is a possible danger. Cannot turn into an emergency. Does no need to be seen.
How much space in front of you is needed while driving on a highway? 1 second for each 10 feet of vehicle length. 1 second for each 20 feet of vehicle length. 1 second for each 30 feet of vehicle length.
Medicine used to treat the common cold: Should only be used when driving during daytime. Often caused drowsiness and should not be used when driving. May safely be used while driving if you use only have the recommended dosage.
Which of the following should you NOT do in an emergency situation? You should brake is such a way that keeps your vehicle in a straight line. It is not important how you brake in an emergency situation. You should avoid braking until you speed is down to 40 mph.
the primary cause of fatal crashes is: Driving at night Driving while eating Driving too fast.
A car suddenly cuts in front of you creating a hazard. Which of the following actions should you NOT take? Honk your horn and stay close behind the car. Signal and change lanes to avoid a hazard. Slow down to prevent a crash.
What should you do when see a hazard in the roadway ahead of you? Steer around it and get back into your lane. Stop quickly and pull to the side of the road. Use your four-way flasher or brake lights to warn others.
Which of the following statements is true about mirror adjusting? You should adjust your mirrors before starting the trip. You should adjust your mirrors while you are driving. The mirrors can be adjusted properly even when the trailer is not straight.
When you are driving an a snow packed road, you should reduce your speed by _______ 1/3 1/4 1/2.
What keeps an engine cool during hot weather driving? Enough engine oil level. Air condition use. High speed driving in order to put more air to the radiator.
What does emergency braking mean? Pushing down the brake pedal as hard as you can. Responding to a hazzard by slowing the vehicle. Using the vehicle emergency brakes.
You should try to park your vehicle so that: You can pull foward when you leave. Park along the curb next to other vehicles. That your vehicle is parked by a tree.
Which of the following statements is true about using engine brakes? You should use the engine brakes as the main way to control your speed. Increasing use of the engine brakes prevents extra friction between the brake shoes and the drums. The use of the brakes on downgrades adds to the braking effect of the engine.
After starting the engine: The coolant temperature gauge should be read right to normal. The oil pressure gauge should be read right to normal. The engine oil temperature gauge should be read right to normal.
When you double your speed, your vehicle has about how many times of destructive power if it crashes? 2 3 4.
If you do not have a CB radio what is the procedure you should follow on the accident scene? Protect the area Notifi the authorities Care for the injured person(s).
If you have a heavy load that slows you down on an upgrade, you should: Shifting to a lower gear. Exit the road until the traffic is lighter. Drive onto the shoulder of the road so that others can pass your vehicle.
you should signal continuosly while turning because: You need both hands on the steering wheel to turn safely. It is illegal to turn off your signal before completing a turn. Most vehicles have self-canceling signals.
Which of the following should be tested on the vehicle to stop? Service brake Parking brake Hydraulic brake.
which of the following statements about alcohol is NOT true? Alcohol goes directly from the stomach to the blood stream. Drinkers can control how fast their body absorbs the alcohol that he/she consumes. BAC is determined by how fast you drink, how much you eat.
when mountain driving, you should drive slwly for safety. Which of the following is the most important? Weight of the vehicle Tires tread type Depth of the tread.
Which of the following is true about radiator shutters and the winter- front during winter driving? The winter-front should be closed tightly. Ice should be removed from the radiator shutter. The engine may overheat if the winter-front is left open.
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