Questions and Answers
How long should the mud flaps on a truck and trailer be?
Long enough to reach within 8 in of the roadway
If you're driving in town, how far will your recommended 12-15 second planning ahead measure in distance?
about a single block
A bridge formula restricts the axle weight for axles which...
are closer together
How soon should oil pressure rise to a normal level after starting the engine?
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If starting from a standstill on a hill, what's the best way to get moving?
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Driving on a highway, it is recommended that you monitor a quarter of a mile ahead. At highway speeds, this equates to...?
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Descending a long downgrade, which of these will help you if you have brake difficulties? (Select all that apply)
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If you are tested and found to have a blood alcohol concentration below 0.04% but above 0.0, what will happen?
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Federal, State, and local regulations concerning cargo weight, securement, and cover vary widely. Which should you obey?
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What are two of the most common causes of tire fires?
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The minimum number of tiedowns on a load is...?
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If your load protrudes more than 4 feet beyond the rear of your vehicle, which of these do you need in Texas? (Select all that apply)
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If an accident victim is bleeding heavily, what should you do to help?
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If there is an obstacle in the road and you have a choice of directions around it, why should you choose to go right?
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How can you avoid temporary night blindness from other drivers' lights?
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If you have to stop on a divided highway, how should you place your warning triangles?
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How should you position your trailer to check the alignment of your mirrors?
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If backing with a tractor trailer, turning the wheel left will do what?
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If you have to stop on an undivided road, how should you set out your emergency warning triangles?
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If a railroad crossing has a steep approach/exit, what should you be very aware of?
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When descending a hill in the state of Texas, what is it unlawful for you to do?
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If you hit a thick fog bank, what's the best thing to do?
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If you have a B:C type fire extinguisher, what is it suitable for dealing with?
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What should you be aware of when passing a motorcycle?
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How many different states' Commercial Driver's Licenses can you hold simultaneously?
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If a road has been recently repaved, what can that mean for you going through an underpass?
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What is the greatest weight allowed for any vehicle or combination of vehicles, plus load, in the state of Texas?
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If you have a convex mirror (e.g., 'fisheye,' 'spot,' 'bugeye'), what should you allow for?
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Which of the following are you not allowed to transport on public highways in Texas in an open truck? (Select all that apply)
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If lug nuts have streaks of rust on them, what might that indicate?
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Study Notes
Truck and Trailer Regulations
- Mud flaps must reach within 8 inches of the roadway.
- Minimum tiedowns for a load is 2.
- If the load protrudes over 4 feet beyond the rear, requirements include a red flag (12x12 inches), a special permit, and a visible light at night.
- The greatest allowed weight for any vehicle combination, including load, is 80,000 lbs in Texas.
Road and Driving Strategies
- When driving in town, plan ahead for about a single block (12-15 seconds).
- On a highway, monitor a quarter mile ahead, which also equates to 12-15 seconds.
- For a hill start, partly engage the clutch before releasing the brake.
- If descending a long downgrade with brake difficulties, look for escape ramps or uphill turns.
Safety Precautions
- Should an accident victim bleed heavily, apply direct pressure to the wound.
- Choose to go right when avoiding an obstacle to prevent entering oncoming traffic lanes.
- To avoid temporary night blindness from headlights, look at the sidelines instead.
- In foggy weather, the best action is to stop in a safe area and wait for improvement.
Equipment and Mirroring
- Position the trailer straight with the cab for mirror alignment checks.
- Be cautious of road changes; repaving may lower underpass clearance.
- Convex mirrors may make objects seem smaller and further than they are.
Emergency Procedures
- Warning triangles on a divided highway should be placed at 10 ft, 100 ft, and 200 ft from the vehicle.
- On an undivided road, set out triangles at the front, rear, and near the vehicle towards traffic.
Legal and Regulatory Compliance
- Compliance with Federal, State, and local cargo regulations is mandatory.
- If found with a BAC above 0.0 but below 0.04%, expect to be out of service for 24 hours.
- Commercial Driver's License rules allow for only one state license at a time.
Fire Safety
- A B:C fire extinguisher is suitable for electrical fires and burning liquids.
Transportation Restrictions
- Transporting loose materials such as gravel, sand, or wood chips in an open truck is prohibited in Texas.
Other Important Notes
- If lug nuts show rust streaks, it may indicate a problem needing attention.
- Heavy fog should prompt safe stopping to avoid visibility hazards.
- Coasting down a hill is unlawful in Texas.
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Description
Test your knowledge with this CDL General Knowledge practice quiz. It covers essential information and safety regulations for commercial driving, perfect for those preparing for their CDL exam. Review concepts like truck specifications, planning ahead, and weight restrictions.
