Knowledge Flashcards
If you are not sure how to put out hazoardous materials fire, you should..
wait for qualified fire fighters
which one of these items is NOT checked in a pre-trip inspection?
Fuel level
Which one of these statements is NOT true about backing a heavy vehicle?
you should back slowliy until you slightly bump into the dock
if you need to leave the road in a traffic emergency you should…
Avoid braking until yout speed has dropped about 20mph
When hydralic brakes fail, the system wont build up pressure and the brake pedal will feel spongy or go to the floor. What action should you take?
bump the brake pedal to generate pressure
CDL medical certificates must be renewed every:
2 years
Which of this statement is true about brakes?
Brakes absorb more heat to stop heavier vehicles
You are driving in heavy traffic at 35mph. The Speed Limit is 55mph. the safest speed of your vehicle is?
35 mph
Which one of these happens when a tire blows out at at highway speeds?
A Vibrating feeling
Which one of theses statements is correct about emergency or evasive action?
To turn quickly, you must have a firm grim on the steering wheel
Controlled braking:
Is used to keep the vehicle in a straight line when braking
Which of these lights cannot be cheked at the same time?
Turn Signals, brake lights and 4-way flashers
Yoiu are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the while driving on an uphill grade. Which one of theses is a good rule to follow when pulling the vehicle back in motion?
use the parking brake to hold the vehicle until the clutch engages
Merging onto roads is safest if you:
Wait for a large enough gap in traffic to enter the road
Whic of these statements is true about rear drive wheel braking skids?
Trailers can push the towing vehicles sideways
How does vehicle weight affect stopping distance?
Empty trucks can take longer to stop than loaded trucks
After Starting the Engine the
Coolant temperature gauge should begin a gradual rise to normal
When driving through roadway work zones, you should
watch for sharp pavement drop-offs
Which one of these systems should receive extra attention during winter weather inspection?
Exhaust
Which statement is true?
Many heavy vehicles collisions occur between midnight and 6:00am
Which one of these statements is true about causes of vehicle fires?
poor trailer can cause flamable cargo to catch on fire
Which one of these statements is true about bad weather driving conditions?
when temperature drops bridges will freeze before roads
How far should a driver look ahead of the vehicle while driving?
12-15 Seconds
when the roads are slippery you should:
Make turns as carefull as possible
You are driving on a straight, level highway at 50mph with no vehivles in front of you. Suddently a tire blows out on you vehicle. What should you do first?
stay off the brake until the vehicle slows down
what should you do when you vehicle hydroplanes?
release the accelerator
Which of these statements is true abot double-clutching and shifting?
you can use the tachometer to tell you when to shift
Which of these is especially true about you tires in hot weather?
you should check tire mountng and air pressure before driving
What 3 things add up to the total stopping distance for your truck or bus?
Perception Distance, reaction distance, braking distance
Where must you keep shiping papers when transporting hazardous materials?
In a pouch on the drivers door or on the seat
which one of these is true about driving in tunnels?
There may be strong winds when exiting
Which one of these is true regarding the use of drugs while driving?
Prescription drugs are allowed if a doctor says the drugs will not affect safe driving ability
Truck Escape Ramps:
Hel avoid damage to vehicles
You are cecking your steering and exhaust system in a pre-trip inspection, which one of these probles, should be fixed before the vehivle is driven?
steering wheel play of more than 10% (2 inches in a 20-inch steering wheel)
You should use your mirrors to check:
Where the rear of your vehivle is while you make turns
Which of these is NOT a good rule to follow when caring for an injured person at an accident scene?
keep injured persons cool
Whic one of these statements is true about warning other drivers of a stopped vehicle?
Move the rear reflective triangle back if the driver’s vision is obscured within 500 feet
Why is a broken exhaust system dangerous?
Poisonous fumes could enter the cab or sleeper berth
According to the Commercial Driver Handbool why should you limit the use of your horn?
It can startle other drivers
The total weight of you power unit, the trailer, and the cargo is called:
Gross conbination weight
Take extra care to keep your vehicle centered in you lane because comercial vehicles:
are often wider than other vehicles
When you are passing another vehicle, pedestrian or biciclist, you should assume that they:
May move into you traffic lane
You are driving a long vehicle that makes wide turns, you want to turn left from one street into another, both are 2-lane 2-way streets, You should:
begin turning your vehicle when half-way throught the intersection
The purpose of retarders is to:
Help slow the vehicle while driving and reduce brake wear
You are driving a new truck with a manual transmission, What gear would you probably have to use to take a long, steep, downhill grade?
a lower gear than you would to climb the hill
you are driving a 40 foot vehicle at 35mph. The road is dry and visivility is good. What is the least amount of space that you should keep in front of you vehicle to be safe.
4 seconds
Which of these is true about a vehicle’s overhead clearance?
Cargo weight can change your vehicle’s height
Whic of these statements is true about speed management?
On slippery roads, it takes longer to stop and its harder to turn without skidding
To determine a person’s blood alcohol concentration, you must know how:
much a person weights
which of these statements is true about cargo types?
Unstable loads (i.e. hanging meat, livestock,) require extra caution on curves.
Statement about drugs:
use of drugs can lead to collisions and/or arrest
first offence CDV under alcohol and drugs, lose the CDL for:
1 year
when signed the “implied consent” you:
give consent to test for alcohol in you blood
When you must stop on a one-way odr divded highway you should place triangle at:
10,100,200 ft toward approaching traffic
what will help keep the engine cool in a hot weather?
make sure the engine has the right amont of oil
Convex (curved) mirrors:
Show a wider area than flat mirrors
The braking effect of the engine is greatest when the engine is ___
the governed RPMs and the trasmission is in the ___gears.
Near
Lower
What is countersteering?
Turning the steering wheel back in the other direction after steering to avoid a traffic emergency
what is the term for CV’s habit of swinging wide on turns?
Offtracking
It is important to shift gears correcly to keep:
Control of the vehicle
Which of these is not a danger when automatic transmission is forced into a lower gear at high speed?
Loss of steering control
A helper should be used help back your vehicle:
Whenever possible
When looking ahead of you vehivle, you should look:
Back & Forth
Near & Far
If you must cross into your oncoming lane as you make a turn you should:
watch for oncoming traffic
Which of these is not a proper use of vehicle lights:
Flashing you taillights to stop someone tailgating
You should signal continuously while turning because:
you need both hands on the wheel to tun safely
Statements about speed and distance
choose a speed that lets you stop within the distance you can see ahead
When aproaching a stopping light that has been green for along time, you should
start slowing down so you will be ready to stop
Crossing or entering traffic with a heavy vehicle, good thng to remmember:
Heavy vehicles need larger gaps in traffic than cars
IF you cannot see well with your headlights when driving in an area with few streetlights on a clear nght, you should
use your highbeams when legal and keep you interior light off
When driving at night, use your low beams when an oncoming vehicle is within
500 feet
If you brakes get wet while driving on a rainy day, what can happen when you apply the brakes?
Trailer jackknife
Statements about tire pressure?
air pressure in the tires increases with temperature
what happens to tar in road pavement during hot weather?
it bleeds, making the road surface slippery
What is the best advice for drivers to follow when heavy fog occurs?
park at a rest area or truck stop until visibility is better
You are driving on a 2-lane road. Oncoming driver shifts lane and is headed straight to you. Whats the best action
Steer to the right
The best drivers are those who watch and prepare for hazards. This is called being:
Defensive
Which of these is a danger of crossing railroad tracks on dirt roads?
You could get hung up halfway across the tracks
To avoid a crash you had to drive onto the right shoulder. you are now driving at 40mph on the shoulder. How should you move back onto the pavement?
If the shouldr is clear, stay on the shoulder until your vehivle comes to a stop. Then move back onto the pavement when it is save
If a straight vehicle (no trailer or articulation) goes into a fron wheel skid, it will:
travel straight ahead even if you turn the steering wheel
The key principle to remember about loading cargois to keep the load:
balanced in the cargo area
Containerized Loads:
are usually used for freight carried part way by rail or ship
Pre-Trip inspection on brakes and suspension system
brake drums should not have oil or grease on them
Pre-trip inspection checking wheels and rims:
Rust around wheel nuts may mean they are loose
Can federal inspectors inspect you truck or bus?
yes, and they can put it out of service
If you do not have HazMat endorsement on licence and are asked to transport hazordous materials in a placarded vehicle, you should:
refuse to transport the load
Whic of these is not required knowledge for drivers needing Hazmat endorsement:
Basic Chemistry
When starting to move up a hill from a stop:
Release the parking brake as you apply engine power
When driving on grades, which of these is the best choice for a safe speed?
Based on vehicle & cargo, select speed safe within the posted speed
Trucks and buses are subject to certain laws and regulations and restrictions.
laws and restrictions vcan vary from place to place
When a doctor perscribes medication for you and you know you will be driving
Ask a doctor if the medication will affect you ability to drive.
You should schedule your driving:
for the hours you are normaly awake
in bad weather, many car drivers tailgate large vehicles. You should
Increase your following distance to avoid the need to make a quick change
