|You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first? Stay off brake until the vehicle has slowed down. Begin light braking. Begin emergency braking.
If you need to leave the road in traffic emergency, you should: Try to get all wheels offthe pavement Avoid braking until your speed has dropped to approximately 20 mph Avoid the shoulder of the road because most shoulders will not support your vehicle.
which of these statements about certain types of cargo is true? Unstable loads, such as hanging meats or livestock, require extra caution on curves. oversized loads can be hauled without special permit during times when roads are not busy. When liquids are hauled, the tank should always be loaded totally full.
According to the driver's manual,why should you limit the use of your horn? It can startle other drivers. The horn is not a good way to let others know you are there. You should keep a firm grip on the steering wheel with both hands at all times.
You do not have a hazardous materials endorsement on yourcommercial driver's license. You are asked to deliver hazardous materials in a placarded vehicle. You should: Refuse to haul the load. Haul the load but only to the nearest place where a driver with a hazardous material endorsement can take over. Haul the load but file a report with the department of transportation after trip.
which of these statements about staying alert to drive is true? A half-hour break for cofee will do more to keep you alert than a half-hour nap. If you must stop to take a nap, it should be at a truck stop or other rst area and never on the side of the road. Sleep is the only thing that can overcome fatigue.
Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true? Pumping the brake pedal may bring pressure up so you can stop the vehicle. the parking brake will not work either, because it is part of the same hydraulic system. Shifting into neutral will help to slow the vehicle.
What happens when the blood alcohol concentration, (SAC), goes up? The drinker more clearly sees how alcohol is affecting him/her. The affects of alcohol decrease. Judgment and self-control are affected.
A key principle to remember about loading cargo s to keep the load: to the front to the rear Balanced in the cargo area.
How do you correct a rear-wheel acceleration skid? Apply more power to the wheels. Stop accelerating. Downshifting.
Controled braking: Can be used when you are turning sharply. Involves locking the wheels for a short period of time. Is used to keep the vehicle in a straight line when braking.
Which of these is a good thing to do when steering to avoid a collision? Apply the brakes while turning. Steer with one hand so you can turn the wheel more quickly. Don't turn anymore than is needed to clear what is in your way.
You should stop driving: After 9 hours. After 5 hours. Whenever you become sleepy.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene? If a qualified person is helping them, stay out of the way unless asked to assist. Keep an injured person cool. Move a severely injured person if there is a danger due to fire or passing traffic.
Which of these statements abour drugs is true? A driver can use any prescription drug while driving. Amphetamines, ("pep pills" or "beanies" ), can be used to help a driver stay alert. Use of drugs can lead to an accident and/or arrest.
you are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best option to take? Hard braking Steer to the right Steer onto the shoulder of the road.
Which of these statements about vehicle fires is true? If cargo in a van or box trailer catches on fire, you should open the cargo doors are soon as possible. If you engine is on fire, you should open the hood as soon as you can. A burning tire should be cooled with water.
You are attempting to put your vehicle in motion from a stop. As you apply power to the drive wheels, they start to spin. You should: Take your foot off the accelerator. Take your foot off the accelerator and apply the brakes. Try a lower gear.
Your vehicle is in traffic emergency and may collide with another vehicle if you do not take immediate action. Which of the following statements is a good rule to remember during such a time? You can almost always turn to miss a obstacle more quickly than you can stop. Stopping is always the safest action to take in a traffic emergency. Leaving the road is always more risky than hitting another vehicle.
under what circunstance can water be used to put out a fire? Tire fires Gasoline fires Electrical fires.
To help stay alert while driving, you should: Schedule trips during hours that you are normally asleep. Take short breaks before you get drowsy. Take cold medicine if you have cold.
To avoid collision, you had to drive onto the right shoulder of the road. You are now driving 40 mph on the shoulder. How should you move back onto the pavement? If the shoulder is clear, stay on the shoulder until your vehicle comes to a complete stop.Then, move your vehicle back to the pavement when it is safe to do so. Brake hard to slow your vehicle then steer sharply onto the pavement. Steer sharply onto the pavement then brake hard as you countersteer.
What is counter steering? Turning the steering wheel counter clockwise. Using the steering axle brakes to prevent over-steering. Turning the steering wheel back in the other direction after steering to avoid a traffic emergency.
To correct a drive wheel braking skid, you should: Stop braking, turn quickly, and then counter-steer. Increase braking. Increase braking, turn quickly, and then counter-steer.
There are two types Jacknife, they are: Trailer Tractor Both A and B.
When loading a trailer, if the cargo weight has been loaded completely on the rear, it may result in: Wheel lockup Damage to steering axle Poor traction on drive wheels.
The center of gravity of a load: Should be kept as high as possible. Can make a vehicle more likely to tip over on curves if it is too high. Is only a problem if the vehicle is overloaded.
To prevent a load from shifting, there should be at least one tie-down for every ______ feet of cargo. 10 15 20.
Which may be a sign of tire failure? Wheels skidding A load hissing noise Vibration.
To prevent brake fade you should: Coast downhill, which is not very steep. Apply constant, hard pressure on the brakes while driving downhill. Select a gear that will keep your vehicle at a safe speed on a steep downgrade.
Stab braking should not be used on a vehicle with: Trailers Antilock brakes Hazardous materials.
Sometimes you need to leave a road to avoid a hazard or emergency. When you do so, you should keep in mid that: Most shoulders are not strong enough to support heavy vehicles. You may not be able to re-enter the road because of the gravel used on shoulders. It is less dangerous to drive onto the shoulder of the road than it is to have a collision.
Which of the following is NOT a characteristic of front tire failure? Vehicle fishtailing Steering wheel twisting Cold steering.
Most skid: Happen on ice Do not happen with radial tires Are caused by driving too fast or trying to stop too quickly.
Which of these is true about notifying authorities after an accident occurs? An exact location is not necessary. Just identify the road and vehicles involved. You should notify authorities about an accident before doing anything else. If you have a celluar phone or CB radio, you should notify the authorities before exiting the vehicle.
If you are not sure what to use to put out a hazardous material fire you should: Wait for the fighters Use water Use dirt.
Which of these lights cannot be checked at the same time? Turn signals, tail lights and clearance lights. Turn signals, brake lights and four-way flashers. Headlights, brake lights and clearance lights.
Drivers of trucks and tractors-trailers with cargo must check that the cargo is well secured within the first _____ miles of the trip. 25 10 50.
You should lightly tap youe brake pedal to "Flash" your brake lights if: You are about to exit the road and need to slow down. A police car is approaching you from the other direction. A driver tailgates your vehicle.
Merging into traffic is safest if you: Waiting for a large enough gap in traffic to enter the road. Bend over into the nearest lane so the other vehicle will give you room. Gain speed on the shoulder and then merge.
Which of these is correct about emergency or evasive action? In order to turn quickly, you must have a firm grip on the steering wheel. You can stop more quickly than you can turn to avoid obstacles. Stopping is always the safest thing to do in a traffic emergency.
What does emergency braking mean? Pushing down the brake pedal as hard as you can. Responding to a hazard by slowly the vehicle. Using the vehicles emergency brakes.
Which of these is true about hauling hazardous materials? Cylinders with compressed gases should be transported under covers if there is no label on them Such a load should be marked with four inch diamond shaped labels on the containers. Such a load should be marked with four inch circle, red colored labels on the containers.
During the vehicle inspection, the checking of ________ will NOT prevent a fire. Cargo, ventilation Battery fluid level Electrical system isolation.
When is necessary to learn how a fire extinguisher works? Before the fire happens. Only when the fire happens. Only when you are transporting flammable materials.
What is the most important reason to inspect your truck or bus? Safety To avoid being cited. It's the law.
You are checking your steering and exhaust system in a pre-trip inspection. Which of these problems, if found, should be fixed before the vehicle is driven? Steeing wheel play that is more than 10 degrees, (2 inches on 20 inch steering wheel). Oil on a tire rod. If gray smoke is coming from the exhaust pipe.
Most serious skid result from: Driving too fast for conditions. Turning too sharply. An uneven load.
which of the following statements about hazards of a vehicle fire is true? Poor cargo ventilation can cause cargo to catch fire. Carrying a fully charged fire axtiguisher may prevent a fire. Under-inflated tires do not cause vehicle fires.
Which of these statements about cargo loading is true? State law dictates legal weight limit. If cargo is loaded by the shipper, a driver is not responsible for its load. The legal maximum weight allowed by the state is considered safe for all driving.
which of these is not required knowledge of a driver needing a hazardous material endorsement? Basic chemistry. Which products can be loaded together. When to use the placards.
Implied consent means: You are giving your consent to inspect your vehicle for alcohol. It is understood that you can drink alcohol every now and then. You are giving your consent to test for alcohol in your blood.
Brake drums, (or disc) must NOT have cracks longer than _______ width of the friction area 1/2 1/3 1/10.
Which of these rigs have a higher chance of "off-tracking" while making a turn? Tractor with a 45 foot trailer Tractor with two 27 foot trailers A 53 foot straight truck.
You are driving a heavy vehicle. You must exit the highway using an off-ramp thar curves downhill. you should: Slow to the posed speed limit for the off-ramp. Slow down to 5 mph below the posted limit. Slow down to 15 mph below the posted limit.
If your brakes fail on a downgrade, you must first: Look outside your vehicle for another means of slowing you. Hit some object in order to stop your vehicle. Find an escape ramp in order to exit the roadway.
You should always turn on your emergency four-way flashers when you? Drive through the mountains. Park of the side of the road. Cross railway tracks.
Should your brakes adjustment be checked often? It depends on how new the brakes are. No, because the other brakes will make up for the air-brakes when they are out of adjusment. Yes, because the brakes can get out of adjusment when they are used a lot.
The bridge formula: Permits less maximun axle weight for axles that are close together. Permits less maximun axle weight for axles that are far apart. Permits the same maximun axle weight for any axle.
which of these would NOT help if the windshield is covered in ice? Brush Scraper Defroster.
Heavy vehicles often move slower than others. which of the following is NOT a good rule to follow while driving a heavy vehicle? Stay on the right side of the road. Use four-way flasher if it is legal in your state. Signal other drivers when it is safe for them to pass you.
Why are tourist considered to be s hazard? They drive rented cars. They may move slowly, un-expectantly change lanes or stop, Police do not fine them.