Podcast
Questions and Answers
What is the maximum speed limit for heavy trucks on the freeway at night?
What is the maximum speed limit for heavy trucks on the freeway at night?
- 55
- 70
- 60
- 65 (correct)
What should you do when going down a steep grade in a heavy vehicle?
What should you do when going down a steep grade in a heavy vehicle?
Use a low gear
What should you do when turning right in a vehicle that is too large to turn by staying in the proper lane?
What should you do when turning right in a vehicle that is too large to turn by staying in the proper lane?
As soon as the front wheels pass the corner, turn wide to right.
How can farm tractors meet lighting requirements when operating on the highway at night?
How can farm tractors meet lighting requirements when operating on the highway at night?
What are the vehicle size and weight requirements for class A, B, and C driver licenses?
What are the vehicle size and weight requirements for class A, B, and C driver licenses?
What should be the first action of the driver of a disabled truck or bus?
What should be the first action of the driver of a disabled truck or bus?
Where should flares be placed around a truck when necessary?
Where should flares be placed around a truck when necessary?
What are the height limits between which reflectors must be mounted?
What are the height limits between which reflectors must be mounted?
What color should clearance lamps, side marker lamps, or reflectors mounted on or near the front of a vehicle be?
What color should clearance lamps, side marker lamps, or reflectors mounted on or near the front of a vehicle be?
What is the greatest height allowed by state law for a vehicle including its load?
What is the greatest height allowed by state law for a vehicle including its load?
What is the greatest weight allowed by state law for a vehicle including its load?
What is the greatest weight allowed by state law for a vehicle including its load?
What should be the greatest distance between two vehicles when one vehicle is towing the other?
What should be the greatest distance between two vehicles when one vehicle is towing the other?
What should you do when hauling equipment that is wider, heavier, or longer than the law permits?
What should you do when hauling equipment that is wider, heavier, or longer than the law permits?
When are turn indicator signals required on a vehicle?
When are turn indicator signals required on a vehicle?
Outside the city limits, what type of vehicle must stop at all railroad crossings?
Outside the city limits, what type of vehicle must stop at all railroad crossings?
What type of vehicles are required to have mud flaps?
What type of vehicles are required to have mud flaps?
What is the maximum speed limit for a taxi cab on a numbered U.S. or state highway during the day?
What is the maximum speed limit for a taxi cab on a numbered U.S. or state highway during the day?
What is the maximum speed limit for motorbuses at night on numbered U.S. and state highways?
What is the maximum speed limit for motorbuses at night on numbered U.S. and state highways?
What is the greatest width ordinarily allowed by state law for a vehicle on the highway?
What is the greatest width ordinarily allowed by state law for a vehicle on the highway?
Flashing lights are permitted on what types of vehicles?
Flashing lights are permitted on what types of vehicles?
What usually determines the number of trailers that may ordinarily be pulled by one vehicle?
What usually determines the number of trailers that may ordinarily be pulled by one vehicle?
What is the greatest length ordinarily allowed by state law for any combination of truck or trailer?
What is the greatest length ordinarily allowed by state law for any combination of truck or trailer?
What is the minimum weight which a trailer or semi-trailer must have before the vehicle is required to have brakes that can be applied by the driver?
What is the minimum weight which a trailer or semi-trailer must have before the vehicle is required to have brakes that can be applied by the driver?
When towing another vehicle with a chain or cable, the flag that is attached to the chain or cable must be what color?
When towing another vehicle with a chain or cable, the flag that is attached to the chain or cable must be what color?
When one truck is following another truck or vehicle, it must keep far enough back to allow how many vehicles to safely enter between them?
When one truck is following another truck or vehicle, it must keep far enough back to allow how many vehicles to safely enter between them?
When mud flaps are required on a vehicle, they must come within how many inches of the surface?
When mud flaps are required on a vehicle, they must come within how many inches of the surface?
What are the regulations regarding lugs and flanges on Texas state highways?
What are the regulations regarding lugs and flanges on Texas state highways?
What are the limits on load extensions over the front and rear of vehicles?
What are the limits on load extensions over the front and rear of vehicles?
What is the safest method to use when backing a large truck?
What is the safest method to use when backing a large truck?
What is the purpose of requiring registration papers on trucks at all times?
What is the purpose of requiring registration papers on trucks at all times?
All school buses, taxis, and other vehicles hauling passengers for hire must carry a chemical-type fire extinguisher of at least what capacity?
All school buses, taxis, and other vehicles hauling passengers for hire must carry a chemical-type fire extinguisher of at least what capacity?
What are the requirements concerning clearance lights on trucks and buses?
What are the requirements concerning clearance lights on trucks and buses?
Every trailer, semi-trailer, or pole-trailer must have how many reflectors on the rear?
Every trailer, semi-trailer, or pole-trailer must have how many reflectors on the rear?
Mounted reflectors must be at least how many inches above the ground?
Mounted reflectors must be at least how many inches above the ground?
How can you test the trailer service brakes?
How can you test the trailer service brakes?
The tractor protection valve will pop when the pressure falls to 100 psi.
The tractor protection valve will pop when the pressure falls to 100 psi.
The tractor protection valve will pop when the pressure falls between 20-45 psi.
The tractor protection valve will pop when the pressure falls between 20-45 psi.
What is the required lighting of a semi-trailer 80 inches or more in width?
What is the required lighting of a semi-trailer 80 inches or more in width?
To drive, you need to raise the landing gear only until it just lifts off the pavement.
To drive, you need to raise the landing gear only until it just lifts off the pavement.
How can you test if air is flowing to all trailers?
How can you test if air is flowing to all trailers?
How can you test the tractor-protection valve?
How can you test the tractor-protection valve?
How can you test the trailer emergency brakes?
How can you test the trailer emergency brakes?
How can you test the trailer service brakes?
How can you test the trailer service brakes?
When coupling, the tractor should be...
When coupling, the tractor should be...
When coupling you should back...
When coupling you should back...
How do you know if the trailer is at the proper height?
How do you know if the trailer is at the proper height?
When coupling, you should back using...
When coupling, you should back using...
How do you check for a secure connection?
How do you check for a secure connection?
What might happen if the trailer is too high when you try to couple?
What might happen if the trailer is too high when you try to couple?
After coupling, how much space should be between the upper and the lower 5th wheel?
After coupling, how much space should be between the upper and the lower 5th wheel?
You should look into the back of the 5th wheel to see if it is locked into the kingpin?
You should look into the back of the 5th wheel to see if it is locked into the kingpin?
ABS will increase your stopping distance.
ABS will increase your stopping distance.
Trailers will have yellow ABS malfunction lamps on the right side of the trailers.
Trailers will have yellow ABS malfunction lamps on the right side of the trailers.
When you drive a tractor-trailer combination with ABS, you should...
When you drive a tractor-trailer combination with ABS, you should...
If your ABS malfunctions, you will lose your brakes.
If your ABS malfunctions, you will lose your brakes.
ABS makes it possible to drive faster more safely.
ABS makes it possible to drive faster more safely.
When coupling, you should inspect the 5th wheel which will include...
When coupling, you should inspect the 5th wheel which will include...
What does the emergency air line do?
What does the emergency air line do?
Blue is used for the service line and red for the emergency.
Blue is used for the service line and red for the emergency.
Why should you use chocks when parking a trailer without spring brakes?
Why should you use chocks when parking a trailer without spring brakes?
Where are the shut-off valves?
Where are the shut-off valves?
You may not notice a major leak in the service line until you try and put on the brakes.
You may not notice a major leak in the service line until you try and put on the brakes.
All new trailers and converter dollies are required to have anti-lock brakes.
All new trailers and converter dollies are required to have anti-lock brakes.
When braking hard you should check your mirrors to make sure that your trailer is staying where it should?
When braking hard you should check your mirrors to make sure that your trailer is staying where it should?
Why should you not use the trailer hard brake to straighten out a jackknifing trailer?
Why should you not use the trailer hard brake to straighten out a jackknifing trailer?
If you must back on a curved path, back to the driver's side so you can see.
If you must back on a curved path, back to the driver's side so you can see.
What type of trailers can get stuck on railroad highway crossings?
What type of trailers can get stuck on railroad highway crossings?
Why should you not use the trailer hand valve while driving?
Why should you not use the trailer hand valve while driving?
Describe what trailer air supply control does.
Describe what trailer air supply control does.
Describe what the service line is for.
Describe what the service line is for.
More than half of truck drivers' deaths in crashes are the result of truck rollover.
More than half of truck drivers' deaths in crashes are the result of truck rollover.
Fully loaded rigs are ___ times more likely to roll over in a crash than empty rigs.
Fully loaded rigs are ___ times more likely to roll over in a crash than empty rigs.
What can you do to prevent rollovers?
What can you do to prevent rollovers?
Keeping the cargo low is even more important in combination vehicles than in straight trucks.
Keeping the cargo low is even more important in combination vehicles than in straight trucks.
Rollovers happen when you turn too ________.
Rollovers happen when you turn too ________.
Trucks with trailers have a dangerous...
Trucks with trailers have a dangerous...
When pulling trailers, a sudden movement with your steering wheel may cause your trailer to tip over.
When pulling trailers, a sudden movement with your steering wheel may cause your trailer to tip over.
Large combination vehicles take longer to stop when they are...
Large combination vehicles take longer to stop when they are...
How much following distance should you have?
How much following distance should you have?
How much following distance should you have when driving 50 mph?
How much following distance should you have when driving 50 mph?
When lightly loaded, the very still suspension springs and strong brakes give poor traction.
When lightly loaded, the very still suspension springs and strong brakes give poor traction.
Tests have shown that bobtails are easy to stop.
Tests have shown that bobtails are easy to stop.
In any combination rig, allow lots of ______ distance and look far ahead.
In any combination rig, allow lots of ______ distance and look far ahead.
What is the best way to recognize that the trailer has started to skid?
What is the best way to recognize that the trailer has started to skid?
Study Notes
Speed Limits and Regulations
- Maximum speed limit for heavy trucks on the freeway at night is 65 mph, same as cars.
- Maximum speed limit for taxi cabs on numbered U.S. or state highways during the day is 70 mph.
- Maximum speed limit for motorbuses at night on numbered U.S. and state highways is 65 mph (55 mph for school buses).
Vehicle Sizing Requirements
- Class A license requires a vehicle of 26,001 pounds or more or a trailer over 10,000 pounds.
- Class B license requires a vehicle of 26,001 pounds or more or a trailer 10,000 pounds or less.
- Class C license requires a vehicle 10,000 pounds or less or a trailer 20,000 pounds.
Emergency Protocols for Disabled Vehicles
- The first action of a disabled truck or bus driver is to put out proper flares, flags, or reflectors.
- Flares should be placed 10 feet in front and 100 feet behind on a two-way road, or 100 to 200 feet behind on a divided highway.
Lighting and Reflector Requirements
- Farm tractors must have visible lights from 1,000 feet at night: 2 red lights at the back and reflectors.
- Clearance lamps and reflectors on the front of a vehicle must be amber, while those at the back must be red.
- Reflectors must be mounted at a height of at least 24 inches and no more than 60 inches above the ground.
Load and Vehicle Limits
- State law allows a maximum vehicle height of 14 feet and a maximum weight of 80,000 pounds.
- Vehicles cannot exceed a width of 102 inches and must not tow more than one trailer if the vehicle's unloaded weight is under 2,500 pounds.
Trailer and Coupling Procedures
- Aging demands for checking trailer connections: ensure the 5th wheel is properly greased and positioned.
- When coupling, the tractor should align directly in front of the trailer, and the backing should be done slowly.
- To test trailer service brakes, release parking brakes and apply the hand brake while moving slowly.
Safety Measures
- When towing another vehicle with a chain or cable, attach a white flag to the chain.
- Use chocks when parking a trailer without spring brakes to prevent rolling due to air leaks.
- Keep cargo low to prevent rollovers, especially in combination vehicles.
ABS and Braking Protocol
- ABS on trailers does not increase stopping distance and allows braking as usual.
- Yellow ABS malfunction lamps are present on trailers, aiding in monitoring functionality.
Rollover Prevention
- Trucks fully loaded are 10 times more likely to roll over than empty.
- Rollover incidents can be mitigated by maintaining slow speeds during turns and being cautious with steering movements.
Driving Distances and Handling
- Maintain at least 1 second of following distance for every 10 feet of vehicle length under 40 mph, plus an additional second at higher speeds.
- Always look far ahead and maintain ample following distance in combination rigs to accommodate longer stopping times.
Additional Guidelines
- The service line controls air based on braking pressure; the emergency air line activates trailer brakes when air pressure is lost.
- Use the lowest reverse gear when backing up to ensure stability and control.
Vehicle Equipment Requirements
- School buses and vehicles transporting passengers for hire are mandated to carry a chemical-type fire extinguisher with a minimum capacity of one quart.
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Description
This quiz covers important regulations for vehicle speed limits, sizing requirements, and emergency protocols. Learn about the responsibilities of truck and bus drivers when faced with vehicle disabilities, as well as the specific requirements for lighting and reflectors. Test your knowledge on these crucial aspects of road safety!
