Podcast
Questions and Answers
What should you check on the certification label to determine if your vehicle is equipped with ABS?
What should you check on the certification label to determine if your vehicle is equipped with ABS?
the date of manufacture
What is a dual air brake system?
What is a dual air brake system?
A two brake system, one operates the front brakes and one operates the back brakes.
What are slack adjusters?
What are slack adjusters?
A slack adjuster is a lever arm connected to the brake chamber's push rod at the clevis assembly that adjusts the brakes for lining wear.
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 for single and combination vehicles?
What are the maximum leakage rates for single and combination vehicles?
What should you do after applying 90 psi or more with the brake pedal?
What should you do after applying 90 psi or more with the brake pedal?
What is the most important reason for doing a vehicle inspection?
What is the most important reason for doing a vehicle inspection?
What things should you check during a trip?
What things should you check during a trip?
Name some key steering system parts.
Name some key steering system parts.
Name some suspension system defects.
Name some suspension system defects.
What three kinds of emergency equipment must you have?
What three kinds of emergency equipment must you have?
What is the minimum tread depth for front tires? For other tires?
What is the minimum tread depth for front tires? For other tires?
Name some things you should check on the front of your vehicle during the walk around inspection?
Name some things you should check on the front of your vehicle during the walk around inspection?
What should wheel bearing seals be checked for?
What should wheel bearing seals be checked for?
How many red reflective triangles should you carry?
How many red reflective triangles should you carry?
How do you test hydraulic brakes for leaks?
How do you test hydraulic brakes for leaks?
Why put the starter switch key in your pocket during the vehicle inspection?
Why put the starter switch key in your pocket during the vehicle 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 moving without rolling back?
If stopped on a hill, how can you start moving 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 the two special conditions where you should downshift?
What are the two special conditions where you should downshift?
When should you downshift automatic transmissions?
When should you downshift automatic transmissions?
Retarders keep you from skidding when the road is slippery.
Retarders keep you from skidding when the road is slippery.
What are the two ways to know when to shift?
What are the two 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 two main things to look for ahead?
What are two 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 you place reflectors when stopped on a divided highway?
Where should you place reflectors when stopped on a divided highway?
What three things add up to total stopping distance?
What three things add up to total stopping distance?
If you go twice as fast, will your stopping distance increase by two or four times?
If you go twice as fast, will your stopping distance increase by two or four 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 allow?
If you are driving a 30-foot vehicle at 55 mph, how many seconds of following distance should you allow?
You should decrease your following distance if somebody is following you too closely.
You should decrease your following distance if somebody 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?
How do you use in-vehicle communications equipment cautiously?
How do you use in-vehicle communications equipment cautiously?
How do you recognize a distracted driver?
How do you recognize a distracted driver?
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? How can you avoid these problems?
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.
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 going down a long, steep downgrade?
What factors determine your selection of a 'safe' speed when going 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.
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 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?
How is Gross Combination Weight Rating different from Gross Combination Weight?
How is Gross Combination Weight Rating different from Gross Combination Weight?
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 tie-downs for a 20-foot load?
What is the minimum number of tie-downs 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?
Name some things to check in the interior of a bus during a vehicle inspection.
Name some things to check in the interior of a bus during a vehicle inspection.
What are some hazardous materials you can transport by bus?
What are some hazardous materials you can transport by bus?
What is a standee line?
What is a standee line?
Does it matter where you make a disruptive passenger get off the bus?
Does it matter where you make a disruptive passenger get off the bus?
How far from a railroad crossing should you stop?
How far from a railroad crossing should you stop?
When must you stop before crossing a drawbridge?
When must you stop before crossing a drawbridge?
The rear door of a transit bus has to be open to put on the parking brake.
The rear door of a transit bus has to be open to put on the parking brake.
What is a supply pressure gauge used for?
What is a supply pressure gauge used for?
Why must air tanks be drained?
Why must air tanks be drained?
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?
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Study Notes
Vehicle Inspection and Safety
- Conducting vehicle inspections is essential for maintaining safety.
- During a trip, check instruments, air pressure gauges, temperature gauges, lights, mirrors, tires, and cargo security.
- Key steering system parts include the steering wheel, tie rod, steering shaft, and power steering cylinder.
- Common suspension defects are cracked spring hangers, damaged air suspension systems, and leaking shock absorbers.
Emergency Equipment
- Carry mandatory emergency equipment: a fire extinguisher, spare fuses, and warning devices for parked vehicles.
Tire and Brake Maintenance
- Minimum tread depth: 4/32" for front tires, 2/32" for others.
- Check wheel bearing seals for any leaks.
- Test hydraulic brakes for leaks by pumping the pedal and holding pressure.
Driving Techniques
- Back toward the driver's side for better visibility; avoid right-side backing.
- To start on a hill without rolling back, engage the clutch and use the parking brake as needed.
- Always use a helper when backing to mitigate blind spots.
Communication and Awareness
- Establish a clear "STOP" signal with your helper for effective communication.
- Keep a following distance of 4 seconds when driving a 30-foot vehicle at 55 mph.
- Look 12-15 seconds ahead and be aware of traffic and road conditions.
Hazard Recognition and Response
- A hazard is defined as any condition posing a potential danger.
- Develop emergency plans upon recognizing hazards to prepare for quick actions.
Handling Distractions and Aggression
- Recognize distracted drivers by their drifting or inconsistent speeds, and avoid engaging aggressively with them.
- Use low beams rather than high beams in most situations to prevent blinding other drivers.
Weather and Road Conditions
- Wet brakes may grab or be weak; avoid deep water when possible.
- Hydroplaning occurs when tires lose contact with the road; steering and braking may be ineffective.
Cargo Management
- Drivers must inspect cargo for security, weight distribution, and visibility.
- Minimum tie-downs required: two for any flatbed load, with one every 10 feet.
- Cover cargo to protect against weather and spillage.
Bus Safety and Regulations
- Inspect buses for secure handholds, seats, and emergency devices before operation.
- Discharging a disruptive passenger should be done in safe locations.
Air Brake System Knowledge
- Air tanks must be drained to remove moisture and prevent system poor performance.
- Antilock brake systems (ABS) prevent wheel lock-up; check for ABS lamps for validation.
- The slack adjusters should be monitored for proper adjustment.
Emergency Procedures
- At an accident scene, remove your vehicle from danger to prevent further incidents.
- Fire extinguishers should be used from a safe distance; they are ineffective against combustible metals.
Legal Weight Regulations
- Gross Combination Weight Rating (GCWR) indicates the vehicle's maximum weight, crucial for legal compliance.
- Underloading front axles can impede steering and traction, posing safety risks during driving.
Conclusion
- Maintain vigilance and preparation in driving practices, vehicle maintenance, and cargo management to ensure safe operations on the road.
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