Texas CDL DMV Endorsement Tank 1

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1. If transporting chlorine, what must be kept in the vehicle?

A phone with emergency numbers programmed

An approved gas mask

A chemical suit

Directions for emergency personnel

A driver transporting chlorine in cargo tanks must keep an approved gas mask and an emergency kit in their vehicle.

2. Accelerating roughly is:

Encouraged at slow speeds.

Encouraged at all speeds.

Discouraged, as it may cause damage to the vehicle.

Discouraged, as it may confuse other drivers.

When accelerating, speed up smoothly and gradually so your vehicle does not jerk. Rough acceleration can cause mechanical damage.

3. When driving, it is important to:

Keep your attention focused in front of your vehicle.

Look only to the front and right side of your vehicle.

Look only to the front and sides of your vehicle.

Look to the front, sides, and rear of your vehicle.

For safe driving, it is essential that you are aware of what is happening on all sides of your vehicle. In addition to watching the road ahead, you should frequently check your mirrors to monitor the road to the sides and to the rear of your vehicle.

4. A loss of air pressure in the emergency line will cause:

The suspension springs to extend.

The tractor protection valve to open.

The rear trailer to detach from the combination.

The emergency brakes to activate.

The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.

5. Drivers are usually the least alert:

In the morning.

In the early evening.

Late at night.

In the afternoon.

Drivers are usually less alert when driving at night, especially after midnight.

6. Due to the risk of liquid surge in tanks, you should:

Accelerate slowly.

Accelerate quickly.

Swerve often.

Drive on the shoulder.

Be aware of the risk of liquid surge when driving tanks transporting liquid cargo. To prevent the negative affects of surge on your driving, you should start, slow, and stop very smoothly.

7. When loading hazardous materials, you should do all of the following, except:

Set the parking brake.

Load the materials away from heat.

Watch for signs of leakage.

Use a hook.

When loading hazardous materials, do not use hooks or tools that could damage containers or other packaging.

8. Driving too fast:

Is a major cause of fatal crashes.

Can be a good way to get to your destination quickly.

Should only be done if the roadway is dry.

Is acceptable in light traffic.

Driving at excessive speeds is a major cause of fatal crashes. Never drive above the posted maximum speed limit and adjust your speed to fit conditions.

9. While driving a vehicle, if an unusual noise or feeling occurs, the driver should:

Assume it is not a concern and continue driving.

Hope the vehicle makes it until it is switched to another driver.

Check the vehicle to determine the proper solutions.

Drive on the shoulder.

If you see, hear, smell, or feel anything that could indicate trouble while you are driving, you should stop and inspect the source of the unusual occurrence.

10. Belts in the engine compartment should be:

Frayed.

Tight.

Greasy.

Easy to slide off.

When inspecting your vehicle's engine, check the belts for tightness and excessive wear. The amount of "give" that is safe for each belt in a given engine will vary, so learn what is appropriate for your vehicle.

11. If an Anti-Lock Braking System (ABS) is equipped on a trailer but not on a tractor:

The truck should not be driven because ABS needs to be on both the tractor and trailer.

The truck should be driven more slowly than usual.

The tractor should not be used and a new tractor with ABS should be located.

The tractor and trailer can still be used together.

A vehicle being equipped with anti-lock brakes on only the tractor or only the trailer provides additional control during braking.

12. Rough acceleration:

Can damage a vehicle.

Is necessary to warm up parts of the engine.

Is encouraged to improve gas mileage.

Should be done on surfaces with poor traction.

Accelerate smoothly and gradually. Rough acceleration can cause mechanical damage.

13. If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can:

Check for wheel speed sensors coming from the back of the brakes.

Look for a red light on the front right corner of the converter dolly.

Pump the air brakes to activate the ABS.

Assume the vehicle has ABS.

If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can check under the trailer for wheel speed sensors coming from the back of the brakes.

14. Fully-loaded rigs:

Are less likely to roll over than empty rigs.

Are more likely to roll over than empty rigs.

Are just as likely to roll over as empty rigs.

Should not be driven.

Because the weight of cargo gives them a higher center of gravity, fully-loaded rigs are 10 times more likely to roll over in a crash than empty rigs.

15. A combination vehicle has:

One air line.

Two air lines.

Three air lines.

Four air lines.

Combination vehicles have two air lines: a service line and an emergency line.

16. To test the trailer service brakes, you should:

Move the vehicle forward slowly and apply the brakes with the brake pedal.

Reverse the vehicle slowly and apply the brakes with the hand control.

Reverse the vehicle slowly and apply the brakes with the brake pedal.

Move the vehicle forward slowly and apply the brakes with the hand control.

To test the trailer service brakes, you should first ensure that the braking system has a normal air pressure level, then release the parking brake. You should then move the vehicle forward slowly and apply the brakes with the hand control. If the trailer service brakes are working properly, you will feel the brakes activate.

17. A distracted driver:

Usually reacts well to hazards.

Usually has slowed perception.

Is usually aware of what is happening around them.

Is a good person to follow.

Driving while distracted may result in slowed perception, delayed decision-making, and improper actions. Watch for distracted drivers and avoid them, when possible.

18. What can change the height of a vehicle?

Color

Length

Weight

Number of windows

The added weight of a heavy load will make a vehicle sit lower than usual. A vehicle will often be taller when carrying a light load than when carrying a heavy load. If your vehicle fits under an overpass while carrying a full load, it is not guaranteed that it will fit under the same overpass if it is empty.

19. Why are roads especially slippery right after it begins to rain?

The water mixes with oil and grease on the road.

Roads are naturally slippery.

Gravel often gets washed to the middle of the lane.

Tires are not usually designed to drive in rain.

In rainy weather, roads are often at their most slippery when the rain first begins to fall. Fresh rainwater mixes with oil and grease on the road to form a slick film. As the rain continues, this mixture will eventually wash away.

20. A stopped bus:

Is not a cause for concern.

Is not a concern if passengers are not unloading.

Should not be on the roadway.

Is a concern, whether passengers are visible or not.

Always drive cautiously around a stopped bus. Passengers may cross in front of or behind it, and the bus may prevent them from seeing your vehicle.

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