knowledge Flashcards
Truck escape ramps
Are designed to protect vehicles from damage
Which of these can cause the vehicle to skid?
a. Not enough weight on the front axle.
b. Over acceleration.
c. Turning too sharply
You are driving a vehicle that could safely be driven at 55 MPH on an open road. But traffic is now heavy, moving at 35 MPH although the speed limit is 55. The safest speed for your vehicle in this situation is most likely
35 MPH
Every time you park your vehicle and shut the engine off you should
Apply the parking brake
Which of these describes how you should use the brake pedal on a steep downhill grade?
Release the brake when you are 5 MPH below your safe speed, then let your speed come back up to your safe speed
For an average commercial vehicle, being driven at 55 MPH on dry pavement it will take about ____ to bring the vehicle to a stop.
The length of a football field
Which of these statements about certain types of cargo is true?
Unstable loads such as hanging meat or livestock require extra caution on curves.
Which of these statements about backing a heavy vehicle is true?
Backing is always dangerous
When should you wear seat belts?
Any time you are in a moving vehicle
The most common cause of serious vehicle skids is
Driving too fast for road conditions
If you are being tailgated, you should
Increase the space in front of you
The parking brake should be tested while the vehicle is
Parked
A drivers trip log, if required
Must be shown immediately when an officer requests it
Should the pre-trip inspection report from the last driver be reviewed during your pre-trip inspection?
Yes
If you are stopped at a roadside rest and found to have a BAC (Blood Alcohol Concentration) of .02 you will
Be placed out of service for 24 hours
When roads are slippery, you should
Make turns as gently as possible
While driving, you see a small (1 foot square) cardboard box ahead in your lane. You should
Steer around it when it is safe to do so
Which of these pieces of emergency equipment should be carried at all times in your vehicle?
a. Fire extinguishers.
b. Warning devices for parked vehicles.
c. Spare electrical fuses (if the vehicle uses them)
What is counter steering?
Turning the wheel in the opposite direction after steering to avoid a traffic emergency.
You do not have a hazardous materials endorsement on your commercial drivers license. When can you drive a vehicle hauling hazardous materials?
Only when the vehicle does not require placards
You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long downhill grade?
A lower gear that you would use to climb the hill
High beams should be
Used whenever it is safe and legal to do so
An en-route inspection should include checking
a. Cargo doors and / or cargo securement.
b. Tire temperature.
c. Brake temperature
Where or when should you test the stopping action of your service brakes?
When the vehicle is moving at about 5 MPH
Stab braking
Involves locking the wheels
Which of these statements about using turn signals is true?
When turning, you should signal early
Retarders
Can cause the vehicle to skid when the road is slippery
Which of these statements about staying alert to drive is true?
The only thing that can cure fatigue is sleep.
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 generally the best action?
Steer to the right
You should avoid driving through deep puddles or flowing water. But if you must, which of these steps can help keep your brakes working?
Gently pressing the brake pedal while driving through the water
Which of these statements about brakes is true
The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it
What should you do when your vehicle hydroplanes?
Release the accelerator
Which fires can you use water to put out?
Tire fires
Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?
Heavy vehicles can almost always turn more quickly than they can stop.
Which of these is a sign of tire failure?
a. Steering that feels heavy.
b. Vibration.
c. A loud bang
Which of these statements about drinking alcohol is true?
A few beers have the same effect on driving as a few shots of whisky
Which of these can help you stay alert while driving?
Taking short breaks before you are drowsy
Which one of these is not part of the check of the engine compartment done for a pre trip inspection?
Valve clearance
According to the driver’s manual, why should you limit the use of your horn?
It can startle other drivers
You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do?
Look for an escape ramp or escape route
How far should a driver look ahead of the vehicle while driving?
12-15 seconds
Which of these statements about cargo loading is true?
State laws dictate legal weight limits
Which of these statements about marking a stopped vehicle is true?
If a hill or curve keeps drivers behind you from seeing the vehicle within 500 feet, the rear reflective triangle should be moved back down the road to give adequate warning
You are driving a 40 foot vehicle at 45 MPH. Driving conditions are ideal (dry pavement, good visibility). What is the least amount of space that you should keep in front of your vehicle to be safe?
5 seconds
The amount of liquid to load into a tank depends on
a. The weight of the liquid.
b. The legal weight limits.
c. The amount of liquid will expand in transit
You are starting 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
You should use your mirrors to check
a. Traffic gaps before you merge.
b. The condition of the tires and cargo.
c. Where the rear of your vehicle is while you make turns
The proper way to hold a steering wheel is at clock positions ____ and ____.
3 and 9
Cargo inspections
Should be performed after every break you take while driving
Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?
a. Lack of braking power
b. Trailer jackknife
c. Wheel lockup
How do you test hydraulic brakes for leaks?
With the vehicle stopped, pump the pedal three times, apply firm pressure for 5 seconds, then hold and see if the pedal moves.
Which of these is a good rule to follow when driving at night.
Keep your speed slow enough that you can stop within the range of your headlights
A vehicle is loaded with very little weight on the drive axle. What may result?
Poor traction
The key principle in balancing cargo weight is to keep the load
Balanced in the cargo area
Which of these statements about using mirrors is true?
There are blind spots that your mirrors cannot show you
Which of these statements about cold weather driving is true?
Windshield washer antifreeze should be added to the washer reservoir.
The most important reason for being alert to hazards is so:
You will have time to plan your escape if the hazard becomes an emergency
Which of these is a good rule to follow when using a fire extinguisher?
Aim at the base of the fire.
Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?
No
You have left the road in an emergency condition, it is impossible for you to come to a stop prior to returning to the road, which of the following is the best action to take?
Reduce your speed to 20 mph or less before returning to the road
Which of these statements about down shifting is true
When you down shift for a curve, you should do so before you enter the curve
Which of these statements about drugs is true?
Use of drugs can lead to accidents and / or arrest
To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 MPH on the shoulder. How should you move back onto the pavement?
Come to a complete stop, if possible, before steering back onto the pavement
Which of these statements about managing space is true?
When the road is slippery, you should keep much more space in front of your vehicle
Which of these is the most important things to remember about emergency braking?
If the wheels are skidding you cannot control vehicle
To correct a rear wheel (drive wheel) braking skid, you should
Release brakes and accelerate