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Questions from CDL Manual @2018
Terms in this set (78)
What is the most important reason for doing vehicle inspection?
Gauges, Critical items (tires, wheels, rims, brakes, lights and reflectors, connections to trailer, trailer coupling device, cargo securement) and use senses-look, listen, smell, feel.
What things should you check during a trip?
tie rod, shaft, hydraulic fluid reservoir, beer box, pitman arm, drag link, steering knuckle, spindle, steering arm, power steering cylinder
Name some key steering components.
Cracked or broken spring hanger
Missing or broken leaves in any leaf spring
Leaking shock absorbers
Cracked damaged or or missing torquer or am, bolts spring hangers
Name some suspension system defects
Spare electrical fuses
What three kinds of emergency equipment must you have?
What is the minimum tread depth for front tires? For other tires?
Condition of front Axel, steering system,windsheild, wiper blades and arms, lights, reflectors, turn signal,
What should you check on the front of your vehicle during walk around.
What should wheel bearings and seals be checked for?
How many red reflective triangles should you carry?
Pump pedal 3X apply firm pressure to the pedal and hold for 5 secs. The pedal should not move. Get it fixed before driving.
How do you test hydraulic brakes for leaks?
Someone may start and move the vehicle
Why put the key in your pocket during vehicle inspection?
Why should you back towards the driver side?
Put on the parking break whenever necessary to keep from rolling back, release parking brake only when you have apply enough engine power to keep from rolling back.
On a tractor trailer equipped with a trailer brake handle Val Bowser, the hand valve can be applied to keep from rolling back.
If stopped on a hill how can you start without rolling back?
There are blind spots you can't see
When backing why is it important to use a helper?
What is the most important hand signal you and your helper should agree upon?
before going down a hill and before a curve
What are the two special conditions where you should downshift?
on a downgrade
When should you downshift and automatic transmission?
false-the retarder should be turned off on wet, icy or snowy roads
Retarders keep you from skidding when the road is slippery. T/F
Engine speed (rpm) and Road speed (mph)
What are the two ways to know when to shift?
that is about 1 block at lower speeds
and 1/4 mile at highway speeds
How far ahead does the manual say you should look?
vehicles coming onto the highway, into your lane, or turning
What are two main things to look ahead for?
What is your most important way to see the sides and rear of your vehicle?
Letting other drivers know your intentions
What does "communicating" mean in safe driving?
10 ft 100 ft and 200 ft toward approaching traffic
Where should you place reflectors when stopped on a divided highway?
10 feet behind, 100 ft behind and 100 feet in front
Where should you place reflectors when stopped on an undivided two way highway
100 ft and 500 ft
Where should you place triangles if you are on a hill, curve or other area with obstructed view?
Braking Distance. =Total stopping distance
What three things add up to total stopping distance?
If you go twice as fast your stopping distance will increase by _____ times.
F-empty trucks require greater stopping distance because they have less traction.
Empty trucks have the best braking T/F
When tires loose contact with the road and have little traction resulting in loss of control
What is hydroplaning
A thin layer of clear ice that makes the road look wet.
What is black ice?
Wait until the vehicle ahead passes a shadow or marker on the side of the road. then count the seconds until you reach the same marker
How do you find out how many seconds of following distance space you have?
1 second for each 10 ft of vehicle for speeds below 40 mph.
Above 40mph add 1 sec
What is the rule of thumb for how much space you should keep in front of you?
If you are driving a 30 ft. vehicle at 55 mph, how many seconds of following distance should you allow?
False. You should increase your following distance, don't speed up and avoid quick changes
You should decrease your following distance if somebody is following you too closely. T/F
If you swing wide to the left before turning right, another driver may try to pass you on the ______________.
Any road conditions or road users that are a possible danger
What is a hazard?
Helps you be prepared incase the potential hazard becomes and emergency.
Why make emergency plans when you see a hazard?
Turn off all communication devices
Know the vehicle before you drive
make all adjustments to mirrors etc before driving
don't read or write
get rid of any unnecessary objects
What are some tips to follow so you don't become a distracted driver
How do you use in vehicle communication equipment cautiously?
driver eating or doing other things
How do you recognize a distracted driver?
Aggressive driving - bold pushy driving that disregards the safety of others
Road Rage- driver had the intent to do harm to others
What is the difference between aggressive driving and road rage?
Get out of their way
Don't make eye contact
Ignore gestures and refuse to react to them
Report them to authorities
What should you do when confronted with an aggressive driver?
You should use high beams when it is safe and legal to do so for improved visibility at night
You should use low beams whenever you can. T/F
What should you do before you are drowsy?
can cause wheel lock up, jackknife, pulling to one side, lack of breaking power. Avoid by breaking lightly while going through a puddle
What effects can wet brakes cause? How can you avoid these problems?
You should let air out of hot tires so the pressure goes back to normal? T/F
You can safely remove the radiator cap as long as the engine isn't overheated. T/F
weight of the vehicle plus cargo
length of the grade
What factors determine your selection of a "safe"speed when going down a long, steep downgrade.
You will not be able to shift into a lower gear
Why should you be in the proper gear before starting down a hill?
With vehicle in proper gear
1.apply brakes hard enough to feel slow down
2.reduce speed to 5 mph below safe speed
3. when speed increases to safe speed, repeat steps 1 and 2
Describe the proper braking technique when going down a long steep downgrade.
low slung units
single-axel tractor pulling a long trailer
What type of vehicle can get stuck on a railroad-highway crossing?
15 seconds for double
14 for single
How long does it take for a typical tractor-trailer unit to clear a double track? Single track
True- you may not have enough room and may have to steer to avoid a crash. You can steer faster than you can stop.
Stopping is not always the safest thing to do in an emergency. T/F
Shoulder is likely to be empty
won't force anyone into an opposing traffic lane and on coming traffic
What are some advantages of going right instead of left around an obstacle.
Keep one set of wheels on the pavement
Stay on the shoulder
If you must leave the road for an emergency what are some guidelines
a pull off every few miles of a downgrade for the purpose of slowing down a vehicle. They may have gravel or turn uphill
What is an escape ramp?
False-breaking during tire failure can cause loss of control.
If a tire blows out, you should put the brakes on hard to stop quickly. T/F
-Tractors, trucks and buses have yellow ABS malfunction lights on the instrument panel
-Trailers will have yellow ABS malfunction lamps on the left side front or rear corner
How do you know if your vehicle has antilock brakes?
Brake as you normally would- only use the the braking force necessary to stop safely and data in control
What is the proper braking technique when driving a vehicle with antilock brakes?
keeps your brakes from locking and helps you keep the vehicle under control during hard braking
How do antilock brakes help you?
-Protect the area-pull over, park away from accident if helping, put on flashers, set out triangles
-Care for the Injured-keep injured warm-don't move severely injured, apply direct pressure
What are some things to do at an accident scene to prevent another accident?
Under inflated tires
dual tires that touch
Name two causes of tire fires.
burning wood paper and cloth
What kind of fires is a BC extinguisher not good for?
False-stay as far away from fire as possible98
When using your extinguisher, should you get as close as possible to the fire?
After accident-spilled fuel, improper flare use
Tires-under inflated or duels touching
Fuel- Driver smoking, proper fueling, loose fuel connections
Cargo- Flammable cargo, improperly sealed or loaded cargo, poor ventilation
Name some causes of vehicle fires.
Signs put on the outside of a vehicle that identifies the hazard class of the cargo. There should be four signs on the front rear and sides
What is a hazardous materials placard?
To warn others of hazardous materials
Why are placards used?
-Recognizing overloads and poorly balanced weight
-knowing that your cargo is properly secured and does not obscure your view
-knowing your cargo does not restrict your access to emergency equipment
What four things related to cargo are drivers responsible for?
Within the first 50 miles of starting, then after 3 hours or 150 miles and after every break you take.
How often must you stop while on the road to check your cargo?
How is Gross Combination Weight Rating different from Gross Combination Weight?
Name two situations where legal maximum weights may not be safe.
Makes the steering axle too light to steer safely
What can happen if you don't have enough weight on the front axle.
Can cause hard steering, damage the steering axle and tires
What can happen if there is too much weight on the steering axle?
4-two tie downs for every 10 ft.
What is the minimum number of tie-downs for a 20 ft load?
2-must have at least two
What is the minimum number of tie-downs for any flatbed load?
protect people from spilled cargo
protect the cargo from weather
Name the two basic reasons for covering cargo on an open bed.
That you don't exceed gross weight and axle weight limits
What must you check before transporting a sealed load.
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