General Knowledge CDL Practice Test

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When preparing to do a pre-trip inspection you must check to see that the parking brakes are on and/or chocked. A. True
Anytime you are going to get out of the truck, or near the truck in general, make sure the parking brake is on.
When getting in to start the engine and inspect inside the cab you must: A. Make sure the parking brake is on.
B. Put gearshift in neutral (or park if automatic).
C. Start engine and listen for unusual noises.
Look at the guages - the oil pressure gauge should come up to normal within how long after starting the engine? B. Seconds
If oil pressure doesn't come up within maybe 10 seconds, something is wrong. shut the engine down immediately.
You should check the following for looseness, sticking, damage or improper settings: A. Steering wheel
B. Accelerator, brake and clutch pedals
C. Transmission controls
After inspecting mirrors and windshilds for cracks, dirt, illegal stickers, or other obstructions to your vision, you should: Clean and adjust as necessary.
When checking lights you should: A. Make sure that the parking brake is set.
B. Turn off the engine and take the key with you.
C. Turn on the headlights and four way flashers.
What should wheel bearing seals be checked for? Hub oil level and no leaks
Hub oil either laying in the rim or covering the rim.
How many red reflective triangles should you carry? 3
How do you test hydraulic brakes for leaks? Pump the brake pedal three times, apply firm pressure, hold for five seconds. The pedal should not move.
Why put the starter switch key in your pocket during the pre-trip inspection? For your safety
To avoid roll backs when you start, you should: Partly engage the clutch before you take your right foot off the brake
What is the proper way to hold the steering wheel? Firmly with both hands on opposite sides of the wheel
Why should you back toward the driver's side? A. Backing roward the right side is dangerous
B. So you can see better
When backing, why is it important to use a helper? There are blind spots you can't see.
What is the most important hand signal that you and the helper should agree on? Stop
What are two special conditions where you should downshift? Before starting down a hill and before entering a curve
When should you downshift automatic transmissions? When going down grades
Retarders keep you from skidding where the road is slippery. False
What are the two ways to know when to shift? Use engine speed (rpm) and use road speed (mph)
How far ahead should you look? Most good drivers look 12 to 15 seconds ahead
What are two main things to look for ahead? Traffic and road conditions
What is your most important way to see the sides and rear? Checking your mirrors regularly
What does "communicating" mean in safe driving? Letting other drivers know you're there to help prevent accidents.
Where should your reflectors be placed when stopped on an undivided highway? Within 10 feet of the front or rear and 100 feet behind and ahead of the vehicle.
What three things add up to total stopping distance? Perception distance, reaction distance, and braking distance
If you go twice as fast, will your stopping distance increase by: 4x
Empty trucks have the best braking. False
What is hydroplaning? when the tires lose their contact with the road
What is black ice? A thin layer of ice clear enough that you can see the road underneath it.
If the vehicle ahead of you is smaller than yours, it can probably: stop faster than you can.
If you are driving a 30 foot vehicle at 55 mph, how many seconds of following distance should you allow? Four seconds
You should decrease your following distance if somebody is following you too closely. False
If you swing wide to the left before turning right another driver may try to pass you on the right. True
You should use low beams whenever you can. False
What should you do before you drive if you are drowsy? Get some sleep before you drive.
What effects can wet brakes cause? Brakes can be weak or grab.
How can you avoid wet brake problems? Slow down, shift to a low gear, gently put on the brakes.
You should let air out of hot tires so the pressure goes back to normal. False
You can safely remove the radiator cap as long as the engine isn't overheated. False
What factors determine your selection of "safe" speed when going down a long steep downgrade? Total weight of the vehicle, length of the grade, steepness, road conditions, and weather.
Why should you be in the proper gear before starting down a hill? Because gravity can cause the speed of your vehicle to increase.
Describe the proper braking technique when going down a long steep downgrade. A. Apply the brake just hard enough to feel a definite slowdown.
B. When your speed has been reduced to around 5 mph below your "safe" speed, release the brake.
C. When your speed has increased to your "safe" speed. repeat A and B
What is a hazard? Any road condition or other road user that is a possible danger.
Why make emergency plans when you see a hazard? In order to protect yourself and others.
Stopping is not always the safest thing to do in an emergency? True
What are some advantages of going right instead of left around an obstacle? A. You can avoid a head on collision.
B. Taking the shoulder may be best.
C. Someone may be passing to the left.
What is an "escape ramp?" Ramps that are located a few miles from the top of a downgrade to help you stop.
If a tire blows out you should put the brake on hard to stop quickly. False
What are some things to do at an accident scene to prevent another accident? A. Try to get your vehicle to the side of the road.
B. If you're stopping to help. park away from the accident.
C. Put on your flashers and set out reflector triangles.
Name two causes of tire fires: Under inflated tires and duals that touch
What does GCWR stand for? Gross Combined Weight Rating.
What does GVWR stand for? Gross Vehicle Weight rating.
What does CDL stand for? Commercial Drivers License.
What does CMV stand for? Commercial Motor Vehicle.
Describe Class A classification. 18+ with GCWR of 26,001 lbs or more. ( is qualified to drive Class B & C classifications also.
Describe Class B classification. 18+ with GVWR of 26,001 lbs or more; any vehicle towing a vehicle with GVWR 10k or less. ( is qualified to drive Class C classifications also.
Describe Class C classification. 18+ with GVWR no more than 26k lbs or any combination of vehicles, except combo of vehicles involving a motor cycle.
What is the minimum age to operate CMV interstate? 21 ( all classes )
Endorsement H Hazardous Materials ( 21+ )
Endorsement N Tank
Endorsement T Doubles and triples
Endorsement P 16 passengers or more including driver ( buses )
Endorsement S School bus: 11 passengers or more including driver.
Endorsement X Combo of hazardous & tank ( 21+ )
Resitriction L Restricts driver to vehicle with no air brakes.
Restriction B Passenger endorsement restriction - Cannot drive Class A buses.
Restriction C Passenger endorsement restriction - Cannot drive class A or B buses.
How long do you have to report a conviction of ANY traffic violation ( except parking ) to your employer no matter what type pf vehicle? 30 days
how long do you have to notify PennDOT if convicted in ANY other state of ANY traffic violation ( except parking ) no matter the type of vehicle? 30 days
How long do you have to notify your employer if drivers license is suspended, revoked, or cancelled before commercial driving privilages are disqualified? End of business the next day.
When applying for a commercial driving job, you must give the employer info on all driving jobs for the past __ yrs? 10
Cannot drive cmv in Pa without a cdl. true or false? true. 5k fine or jail
you will lose cdl for at least 1 year for your first offense if convicted for: Driving cmv under influence of alcohol or controlled substance; accident involving death, personal injury, unattended vehicle or property dmg; while suspended, revoked, cancelled or recalled while subject to disqualification of an out-of-state service order.
You are driving under the influence if driving schools bus with blood alcohol concentration ( BAC ) of... .02%
You are driving under the influence if driving CMV ( except buses ) with a blood alcohol concentration ( BAC )of ... .04%
How long will you lose your CDL for on first offense of DUI? 1 yr
If BAC is > .02% for school bus drivers, and > .04% for any other CMV drivers, BUT have any detectable amount, what can happen? Can be placed out-of-service for 30 days.