Podcast
Questions and Answers
What is the most important reason for vehicle inspection?
What is the most important reason for vehicle inspection?
safety
What are things to check during a trip?
What are things to check during a trip?
instruments, air pressure gauge, temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/cargo covers, lights
Name some key steering system parts.
Name some key steering system parts.
steering wheel, tie rod, steering shaft, hydraulic fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm, power steering cylinder
Name some suspension system defects.
Name some suspension system defects.
What are 3 kinds of emergency equipment you should have?
What are 3 kinds of emergency equipment you should have?
What is the minimum tread depth for tires?
What is the minimum tread depth for tires?
What things should be checked on the front of the vehicle during a walk-around inspection?
What things should be checked on the front of the vehicle during a walk-around inspection?
What should wheel bearing seals be checked for?
What should wheel bearing seals be checked for?
How do you test hydraulic brakes for leaking?
How do you test hydraulic brakes for leaking?
Why should you put the starter switch key in your pocket during pre-trip inspection?
Why should you put the starter switch key in your pocket during pre-trip inspection?
Why should you back toward the driver's side?
Why should you back toward the driver's side?
If stopped on a hill, how can you start without rolling back?
If stopped on a hill, how can you start without rolling back?
When backing, why is it important to use a helper?
When backing, why is it important to use a helper?
What's the most important hand signal that you and the helper should agree on?
What's the most important hand signal that you and the helper should agree on?
What are 2 special conditions where you should downshift?
What are 2 special conditions where you should downshift?
When should you downshift an automatic transmission?
When should you downshift an automatic transmission?
Retarders keep you from skidding when the road is slippery.
Retarders keep you from skidding when the road is slippery.
What are the 2 ways to know when to shift?
What are the 2 ways to know when to shift?
How far ahead does the manual say you should look?
How far ahead does the manual say you should look?
What are 2 main things to look for ahead?
What are 2 main things to look for ahead?
What's your most important way to see the sides and rear of your vehicle?
What's your most important way to see the sides and rear of your vehicle?
What does 'communicating' mean in safe driving?
What does 'communicating' mean in safe driving?
Where should your reflectors be placed when stopped on a divided highway?
Where should your reflectors be placed when stopped on a divided highway?
What are 3 things that add up to total stopping distance?
What are 3 things that add up to total stopping distance?
If you go twice as fast, will your stopping distance increase by 2 or 4 times?
If you go twice as fast, will your stopping distance increase by 2 or 4 times?
Empty trucks have the best braking.
Empty trucks have the best braking.
What is hydroplaning?
What is hydroplaning?
What is black ice?
What is black ice?
How do you find out how many seconds of following distance space you have?
How do you find out how many seconds of following distance space you have?
If you are driving a 30-foot vehicle at 55 mph, how many seconds of following distance should you have?
If you are driving a 30-foot vehicle at 55 mph, how many seconds of following distance should you have?
You should decrease your following distance if someone is following you too closely.
You should decrease your following distance if someone is following you too closely.
If you swing wide to the left before turning right, another driver may try to pass you on the right.
If you swing wide to the left before turning right, another driver may try to pass you on the right.
What is a hazard?
What is a hazard?
Why make emergency plans when you see a hazard?
Why make emergency plans when you see a hazard?
What are some tips to follow so you won't become a distracted driver?
What are some tips to follow so you won't become a distracted driver?
How do you use in-vehicle communications equipment cautiously?
How do you use in-vehicle communications equipment cautiously?
How do you recognize distracted drivers?
How do you recognize distracted drivers?
What is the difference between aggressive driving and road rage?
What is the difference between aggressive driving and road rage?
What should you do when confronted with an aggressive driver?
What should you do when confronted with an aggressive driver?
What are some things you can do to reduce your stress before and while you drive?
What are some things you can do to reduce your stress before and while you drive?
You should use low beams whenever you can.
You should use low beams whenever you can.
What should you do before you drive if you are drowsy?
What should you do before you drive if you are drowsy?
What effects can wet brakes cause, and how can you avoid these problems?
What effects can wet brakes cause, and how can you avoid these problems?
You should let air out of hot tires so the pressure goes back to normal.
You should let air out of hot tires so the pressure goes back to normal.
You can safely remove the radiator cap as long as the engine isn't overheated.
You can safely remove the radiator cap as long as the engine isn't overheated.
What factors determine your selection of a 'safe' speed when driving down a long steep downgrade?
What factors determine your selection of a 'safe' speed when driving down a long steep downgrade?
Why should you be in the proper gear before starting down a hill?
Why should you be in the proper gear before starting down a hill?
Describe the proper braking technique when going down a long, steep downgrade.
Describe the proper braking technique when going down a long, steep downgrade.
What type of vehicles can get stuck on a railroad-highway crossing?
What type of vehicles can get stuck on a railroad-highway crossing?
How long does it take for a typical tractor-trailer unit to clear a double track?
How long does it take for a typical tractor-trailer unit to clear a double track?
Stopping is not always the safest thing to do in an emergency.
Stopping is not always the safest thing to do in an emergency.
What are some advantages of going right instead of left around an obstacle?
What are some advantages of going right instead of left around an obstacle?
What is an 'escape ramp'?
What is an 'escape ramp'?
If a tire blows out, you should put the brakes on hard to stop quickly.
If a tire blows out, you should put the brakes on hard to stop quickly.
How do you know if your vehicle has antilock brakes?
How do you know if your vehicle has antilock brakes?
What is the proper braking technique when driving a vehicle with antilock brakes?
What is the proper braking technique when driving a vehicle with antilock brakes?
How do antilock brakes help you?
How do antilock brakes help you?
What are some things to do at an accident scene to prevent another accident?
What are some things to do at an accident scene to prevent another accident?
Name two causes of tire fires.
Name two causes of tire fires.
What kinds of fires is a B:C extinguisher not good for?
What kinds of fires is a B:C extinguisher not good for?
When using your extinguisher, should you get as close as possible to the fire?
When using your extinguisher, should you get as close as possible to the fire?
Name some causes of vehicle fires.
Name some causes of vehicle fires.
Common medicines for colds can make you sleepy.
Common medicines for colds can make you sleepy.
What should you do if you become sleepy while driving?
What should you do if you become sleepy while driving?
Coffee and a little fresh air will help a drinker sober up.
Coffee and a little fresh air will help a drinker sober up.
What is a hazardous materials placard?
What is a hazardous materials placard?
Why are placards used?
Why are placards used?
What is 'sleep debt'?
What is 'sleep debt'?
What are the danger signals of drowsy driving?
What are the danger signals of drowsy driving?
What four things related to cargo are drivers responsible for?
What four things related to cargo are drivers responsible for?
How often must you stop while on the road to check your cargo?
How often must you stop while on the road to check your cargo?
What is Gross Combination Weight Rating?
What is Gross Combination Weight Rating?
Name two situations where legal maximum weights may not be safe.
Name two situations where legal maximum weights may not be safe.
What can happen if you don't have enough weight on the front axle?
What can happen if you don't have enough weight on the front axle?
What is the minimum number of tie downs for any flatbed load?
What is the minimum number of tie downs for any flatbed load?
What is the minimum number of tiedowns for a 20-foot load?
What is the minimum number of tiedowns for a 20-foot load?
Name two basic reasons for covering cargo on an open bed.
Name two basic reasons for covering cargo on an open bed.
What must you check before transporting a sealed load?
What must you check before transporting a sealed load?
Why must air tanks be drained?
Why must air tanks be drained?
What is a supply pressure gauge used for?
What is a supply pressure gauge used for?
All vehicles with air brakes must have a low air pressure warning signal.
All vehicles with air brakes must have a low air pressure warning signal.
What are spring brakes?
What are spring brakes?
Front wheel brakes are good under all conditions.
Front wheel brakes are good under all conditions.
How do you know if your vehicle is equipped with antilock brakes?
How do you know if your vehicle is equipped with antilock brakes?
What is a dual air brake system?
What is a dual air brake system?
What are the slack adjusters?
What are the slack adjusters?
How can you check slack adjusters?
How can you check slack adjusters?
How can you test the low pressure warning signal?
How can you test the low pressure warning signal?
How can you check that the spring brakes come on automatically?
How can you check that the spring brakes come on automatically?
What are the maximum leakage rates?
What are the maximum leakage rates?
Why should you be in the proper gear before starting down a hill?
Why should you be in the proper gear before starting down a hill?
What factors can cause brakes to fade or fail?
What factors can cause brakes to fade or fail?
The use of brakes on a long, steep downgrade is only a supplement to the braking effect of the engine.
The use of brakes on a long, steep downgrade is only a supplement to the braking effect of the engine.
If you are away from your vehicle only a short time, you do not need to use the parking brake.
If you are away from your vehicle only a short time, you do not need to use the parking brake.
How often should you drain air tanks?
How often should you drain air tanks?
How do you brake when you drive a tractor-trailer combination with ABS?
How do you brake when you drive a tractor-trailer combination with ABS?
You still have normal brake functions if your ABS is not working.
You still have normal brake functions if your ABS is not working.
What two things are important to prevent rollover?
What two things are important to prevent rollover?
When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
Why should you not use the trailer hand brake to straighten out a jackknifing trailer?
Why should you not use the trailer hand brake to straighten out a jackknifing trailer?
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Study Notes
Vehicle Inspection and Safety
- Vehicle inspection is primarily for ensuring safety.
- Regular checks include instruments like air pressure gauge, temp gauge, pressure gauge, mirrors, tires, lights, and cargo security.
Steering and Suspension Systems
- Important components of a steering system include the steering wheel, tie rod, steering shaft, and hydraulic fluid reservoir.
- Common defects in suspension systems involve cracked hangers, leaking shock absorbers, and damaged air suspension systems.
Emergency Equipment and Tire Safety
- Essential emergency equipment includes a fire extinguisher, three reflective triangles, and spare fuses.
- Minimum tread depth for tires is 4/32 inch for front tires and 2/32 inch for rear tires.
Backing and Maneuvering Techniques
- When backing up, using a helper is crucial due to blind spots.
- It's safer to back towards the driver's side for better visibility.
- Engage the clutch to prevent rolling back when starting on an incline.
Driving Practices
- Maintain a following distance of one second for every 10 feet of vehicle length under 40 mph, adjusting accordingly for higher speeds.
- Always look 12 to 15 seconds ahead to anticipate hazards.
Handling Hazards and Emergency Situations
- Identify hazards as any potential danger present on the road.
- Stay alert to avoid distractions while driving, such as pre-programming radio stations and minimizing clutter inside the vehicle.
Vehicle Brakes and Handling
- Test hydraulic brakes for leaks by pumping the brake pedal and ensuring it remains firm.
- Wet brakes can cause reduced effectiveness; avoid deep puddles and check brake function regularly.
Weight and Cargo Management
- Properly secured cargo is crucial, with specific tie-down requirements based on the load size.
- Inspect cargo after initial travels and subsequent breaks to ensure safety and compliance with weight limits.
Special Driving Conditions
- Know that under-loaded front axles can impair steering ability and traction.
- On steep downgrades, maintain a safe speed by balancing engine braking and hydraulic brakes.
Emergency Procedures
- Use caution with fire extinguishers and assess your surroundings before using them to avoid getting too close to the flames.
- In the event of a tire blowout, do not brake suddenly to prevent loss of control.
Drowsy Driving Awareness
- Recognize signs of drowsiness such as inability to focus, frequent yawning, or drifting off the road; stop and rest if necessary.
- Important to know that common over-the-counter cold medications can induce drowsiness.
Hazardous Materials and Regulations
- Understand placards indicate hazardous cargo on vehicles, ensuring safety and awareness for other drivers.
- Regularly check that air tanks are drained to avoid performance issues with the braking system.
Anti-lock Brakes (ABS)
- Vehicles equipped with ABS have a yellow malfunction indicator; normal braking techniques are applicable even without ABS function.
- Slack adjusters should be checked for proper brake function; movement beyond an inch may require adjustments.
Rollover Prevention
- To prevent rollovers, keep cargo low and centered, especially while turning suddenly.
- Understand that in double trailer configurations, it's often the rear trailer that is at greater risk of rolling over.
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