Louisiana Class D Chauffeur's License Test

Questions and Answers

Class D license is for anyone driving a vehicle or combined set of vehicles in this weight range _____, as long as they are not carrying hazardous materials.

10,001-26,001 pounds

A Class D license allows for a driver-for-fire to drive any vehicle fitting into the Class __ requirements.

You must be ____ years old to receive a Class D license.

The maximum width for all vehicles except buses is ___.

8 feet Signup and view all the answers

The maximum width for buses is ____.

8ft 6in Signup and view all the answers

The load may not project more than ___ beyond the width of the body.

6in Signup and view all the answers

The maximum height for all vehicles is ___.

13ft 6in Signup and view all the answers

The maximum length for any single vehicle including its load is ___.

40ft Signup and view all the answers

The maximum length for a truck-tractor and trailer combination is ___.

65ft Signup and view all the answers

The maximum height, length, and width requirements do not apply to , , or __ as long as they are operating during daylight.

auto carriers, trailers hauling poles or pilings, trailers hauling logs Signup and view all the answers

When securing a load, the contents must not be __, , _, or ____ and the cover must be securely fastened.

drop, shift, leak, otherwise escape Signup and view all the answers

Any load may not extend more than ____ in front of the vehicle.

4ft Signup and view all the answers

Any load, except for poles, pilings, and logs, may not extend more than ___ beyond the rear of the vehicle.

8ft Signup and view all the answers

Poles, pilings, and logs may not extend more than ___ beyond the rear of the trailer.

15ft Signup and view all the answers

If a load extends more than _ past the body of the vehicle, a 12-inch square _ must be attached to the load during daylight and a __ must be attached during nighttime.

4 ft, red flag, red light Signup and view all the answers

The red light attached to the load at night must be visible from ____.

500ft Signup and view all the answers

When pulling or towing another motor vehicle the speed limit is _____.

45 mph Signup and view all the answers

The speed limit for school buses, which are frequently stopping to load or unload children, is ___.

35 mph Signup and view all the answers

For all other vehicles, where the posted speed limit permits, the maximum speed limit is ___.

70 mph Signup and view all the answers

On rural highways, outside residential areas or business districts, drivers of motor trucks must not follow within _____ of one another except to pass.

400 ft Signup and view all the answers

High beam headlights must be dimmed at _ from oncoming traffic and __ from a vehicle being followed.

500ft, 200ft Signup and view all the answers

You must stop within _ but not closer than _ from a railway crossing.

50ft, 15ft Signup and view all the answers

Vehicles transporting passengers must be equipped with this type of fire extinguisher.

2-BC Signup and view all the answers

Tow trucks must have this type of fire extinguisher.

4-BC Signup and view all the answers

Vehicles transporting explosives must have this type of fire extinguisher.

10-BC Signup and view all the answers

Freight carrying vehicles and passenger buses must carry either 3 , 3, or 3 and 2 as warning equipment.

flares, electric red lanterns or red portable reflectors, and 2 12 inch square red cloth flags Signup and view all the answers

Flares or fuses are not allowed on these trucks.

Those carrying explosives, flammable liquids, compressed gases, or those using compressed gas for fuel Signup and view all the answers

Warning signals must be placed _ behind and _ in front of the vehicle and one ____ to the front or rear on the side of the vehicle facing traffic when it breaks down.

100 ft, 100ft, 10ft Signup and view all the answers

The draw bar used to tow another vehicle must not be more than ___ except when transporting objects which cannot be easily dismembered like poles, pipes, or machinery.

15 ft Signup and view all the answers

The rear view mirror must reflect an image reaching at least ____ behind the vehicle.

200ft Signup and view all the answers

Vehicles weighing or carrying more than ___ must be equipped with extra brakes.

3,000 pounds Signup and view all the answers

___ brakes are a safe way of stopping large vehicles when used correctly.

Air Signup and view all the answers

The three braking systems that make up an air brake system are.

Service brake, parking brake, and emergency brake Signup and view all the answers

The part of the air brake system which pumps air into the air storage tanks is called the.

Air compressor Signup and view all the answers

The part of the air brake system which controls when the air compressor will pump air into the air storage tanks is called the.

Air compressor governor Signup and view all the answers

The part of the air brake system which is operated by turning a quarter turn or by pulling a cable and which must be drained manually at the end of the day is called the.

Manual air tank drain Signup and view all the answers

The part of the air brake system in which water and oil are automatically expelled is called the.

Automatic air tank drain Signup and view all the answers

The ___ of the air brake system protects the tanks and the rest of the system from too much pressure. It is usually set at 150 psi. If it releases air, something is wrong.

Safety valve Signup and view all the answers

The ___ part of the air brake system tells you how much pressure is left in the air tanks.

Supply pressure gauges Signup and view all the answers

The ____ shows you how much air pressure you are applying to the brakes.

Application pressure gauge Signup and view all the answers

If the air pressure in the tanks falls below ___, the low air pressure warning will come on.

60 psi Signup and view all the answers

___ brakes are held back by air pressure and are the mechanical force which keeps the emergency and parking brakes in place.

Spring Signup and view all the answers

In newer vehicles, you engage the parking brakes by using this knob.

Diamond-shaped, yellow, push-pull knob Signup and view all the answers

Never push the brake pedal down when the ___ brakes are on.

Spring brakes Signup and view all the answers

The first step to checking the air brakes is to see if the air pressure drops more than __ pounds in _ minute.

3 pounds in 1 minute Signup and view all the answers

The second step to checking the air brakes is to ____.

Make sure the low air pressure warning signals are working Signup and view all the answers

The third step of checking the air brakes is to make sure the parking brake valve closes at ____ psi.

20-40 psi Signup and view all the answers

7 additional things that must be checked when doing an air brake check.

<ol> <li>Air compressor drive belt 2) Manual slack adjusters on S-cam brakes 3) Brake drums, linings, and hoses 4) Rate of air pressure buildup 5) Air compressor governor cut-in and cut-out pressures 6) Parking brake 7) Service brakes</li> </ol> Signup and view all the answers

2 methods of emergency braking.

Controlled or stab Signup and view all the answers

The type of emergency braking in which you put on the brakes as hard as you can without locking the wheels or turning the steering wheel is called.

Controlled braking Signup and view all the answers

The type of emergency braking in which you press the brake pedal as hard as you can, let up when the wheels lock, and push on the brakes again when the vehicle starts rolling is called.

Stab braking Signup and view all the answers

With air brakes it takes ____ for the air to flow through the lines to the brakes.

1/2 second or more Signup and view all the answers

The equation which equals the total stopping distance for vehicles with air brakes.

Perception distance + reaction distance + brake lag distance + effective braking distance Signup and view all the answers

If the low air pressure warning for the air brake system comes on you should __.

Stop and safely park as soon as possible Signup and view all the answers

Brakes can fail or fade from _ caused by _.

Excessive heat caused by using them too much or improper adjustment Signup and view all the answers

Any time you park you should use the parking brake except for these 2 exceptions.

The brakes are very hot or in the brakes are wet and the temperature is freezing Signup and view all the answers

Study Notes

Class D License Overview

A Class D license allows operation of vehicles weighing between 10,001 and 26,001 pounds, excluding hazardous materials.
Minimum age requirement for obtaining a Class D license is 17 years.

Vehicle Dimension Regulations

Maximum vehicle width (excluding buses) is 8 feet; for buses, it's 8 feet 6 inches.
Maximum vehicle height is 13 feet 6 inches.
A load must not project more than 6 inches beyond the vehicle's width.
Maximum length for a single vehicle is 40 feet.
For truck-tractor and trailer combinations, maximum length is 65 feet.

Load Projection Rules

Loads may not extend more than 4 feet in front of the vehicle.
For most loads, rear extension is limited to 8 feet, while poles, pilings, and logs can extend up to 15 feet.
If the load extends more than 4 feet past the vehicle, a 12-inch red flag is required by day and a red light by night.

Safety Equipment and Warning Signals

Warning signals must be placed 100 feet behind and in front of the vehicle, with an additional signal 10 feet from either side facing traffic when the vehicle is disabled.
Vehicles transporting passengers need a 2-BC fire extinguisher; tow trucks require a 4-BC extinguisher, and those transporting explosives need a 10-BC extinguisher.
Warning equipment for freight and buses includes either 3 flares, electric red lanterns, or red portable reflectors, plus 2 12-inch red cloth flags.

Speed Regulations

Speed limit while towing another vehicle is 45 mph.
School buses must adhere to a speed limit of 35 mph.
Maximum speed limit for all other vehicles is 70 mph where posted.
Trucks must maintain a distance of 400 feet on rural highways unless passing.

Braking Systems and Maintenance

Vehicles over 3,000 pounds require extra braking mechanisms.
Safe braking systems for large vehicles include air brakes, which consist of service brakes, parking brakes, and emergency brakes.
Components of the air brake system include air compressor, governor, and both manual and automatic air tank drains.
Key maintenance includes checking air pressure, ensuring low air pressure warning systems operate, and verifying the parking brake valve closes at 20-40 psi.

Emergency Braking Techniques

Two methods of emergency braking are controlled braking and stab braking; controlled braking prevents wheel lock-up, while stab braking involves releasing brakes upon lock-up and then reapplying.
Total stopping distance for vehicles with air brakes consists of perception, reaction, brake lag, and effective braking distances.

Parking and Usage Guidelines

Always engage the parking brake when parked, except when brakes are hot or in freezing conditions.
Immediate action is required if the low air pressure warning activates, prompting safe parking as soon as possible.
Air brakes entail a delay of at least 1/2 second for air flow; careful monitoring of brake conditions is crucial to prevent failure or fade.

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Description

Test your knowledge about Louisiana's Class D chauffeur's license requirements with these flashcards. This quiz covers essential information such as weight limits and age requirements for obtaining the license. Prepare effectively to ensure you meet the necessary standards for safe driving.