Download Louisiana Class D License Exam: Air Brake Systems and Load Regulations and more Exams Transportation Engineering in PDF only on Docsity!
Louisiana Class D License Exam, Louisiana Class D "Chauffeur's" License Test, Louisiana Class D "Chauffeur's" License, Louisiana Class D "Chauffeur's" License Test, Louisiana Class D "Chauffeur's" License Exam Test Questions With Complete Solutions ___ brakes are a safe way of stopping large vehicle when used correctly Correct Answers air ___ brakes are a safe way of stopping large vehicle when used correctly Correct Answers air ___ brakes are held back by air pressure and are the mechanical force which keeps the emergency and parking brakes in place Correct Answers spring brakes ___ brakes are held back by air pressure and are the mechanical force which keeps the emergency and parking brakes in place Correct Answers spring brakes ____ brake system applies and releases the brakes when you use the brake pedal during normal driving Correct Answers Service ____ brake system applies and releases the brakes when you use the brake pedal during normal driving Correct Answers Service ____ brake system applies and releases the parking brakes when you use the parking brake control Correct Answers Parking ____ brake system applies and releases the parking brakes when you use the parking brake control Correct Answers Parking
____ brake system uses part of the service and parking brake's system to stop the vehicle in the event of a brake system failure Correct Answers Emergency ____ brake system uses part of the service and parking brake's system to stop the vehicle in the event of a brake system failure Correct Answers Emergency 2 methods of emergency breaking Correct Answers controlled or stab 2 methods of emergency breaking Correct Answers controlled or stab 7 additional things that must be checked when doing an air brake check Correct Answers 1)air compressor drive belt
- manual slack adjusters on S-cam brakes
- brake drums, linings, and hoses
- rate of air pressure buildup
- air compressor governor cut-in and cut-out pressures
- parking brake
- service brakes 7 additional things that must be checked when doing an air brake check Correct Answers 1)air compressor drive belt
- manual slack adjusters on S-cam brakes
- brake drums, linings, and hoses
- rate of air pressure buildup
- air compressor governor cut-in and cut-out pressures
- parking brake
A rear view mirror must reflect a view of the highway for a distance of ___ feet to the rear regardless of the load of the vehicle. Correct Answers 200 A rear view mirror must reflect a view of the highway for a distance of ____ to the rear, regardless of the load of the vehicle Correct Answers 200 feet A rear view mirror must reflect a view of the highway for a distance of ____ to the rear, regardless of the load of the vehicle Correct Answers 200 feet a) Press the brake pedal as hard as you can. b) Release the brakes when the wheels lock up. c) As soon as the wheels start rolling, put on the brakes fully again Correct Answers Stab braking a) Press the brake pedal as hard as you can. b) Release the brakes when the wheels lock up. c) As soon as the wheels start rolling, put on the brakes fully again Correct Answers Stab braking Air brake systems are three braking systems combined: the ____ brake system, the ____ brake system, and the ____ brake system Correct Answers Service, parking, emergency Air brake systems are three braking systems combined: the ____ brake system, the ____ brake system, and the ____ brake system Correct Answers Service, parking, emergency
All trailers or semi-trailers with a gross vehicle weight rating of ____ or more must be equipped with brakes adequate to stop and hold it. Correct Answers 3,000 pounds All trailers or semi-trailers with a gross vehicle weight rating of ____ or more must be equipped with brakes adequate to stop and hold it. Correct Answers 3,000 pounds All trailers with a gross weight of ____ or more are required to be equipped with brakes Correct Answers 3,000 pounds All trailers with a gross weight of ____ or more are required to be equipped with brakes Correct Answers 3,000 pounds Also, high beam headlights must be dimmed no less than ____ feet from oncoming traffic, and ___ feet of a vehicle being followed. Correct Answers 500, 200 any load except for poles, pilings, and logs may not extend more than ___ beyond the rear of the vehicle Correct Answers 8ft any load except for poles, pilings, and logs may not extend more than ___ beyond the rear of the vehicle Correct Answers 8ft any load may not extend more than ____ in front of the vehicle Correct Answers 4ft any load may not extend more than ____ in front of the vehicle Correct Answers 4ft
Brakes can fade or fail from excessive heat caused by ____ and not relying on the ____ effect or ____ Correct Answers Using them too much, engine braking, improper adjustment Brakes can fade or fail from excessive heat caused by ____ and not relying on the ____ effect or ____ Correct Answers Using them too much, engine braking, improper adjustment brakes can fail or fade from ___ caused by ___ Correct Answers excessive heat caused by using them too much or improper adjustment brakes can fail or fade from ___ caused by ___ Correct Answers excessive heat caused by using them too much or improper adjustment 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 Correct Answers 10,001-26, pounds 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 Correct Answers 10,001-26, pounds Comes on before the air pressure in the tanks falls below 60 psi Correct Answers Low air pressure warning
Comes on before the air pressure in the tanks falls below 60 psi Correct Answers Low air pressure warning Controls when the air compressor will pump air into the air storage tanks Correct Answers Air compressor governor Controls when the air compressor will pump air into the air storage tanks Correct Answers Air compressor governor Drivers should use ____ as the principal means of controlling speed on long grades. Correct Answers Engine compression Drivers should use ____ as the principal means of controlling speed on long grades. Correct Answers Engine compression Every truck must have a device this device to minimize the spray or splash of water or mud or loose road surface material to the rear Correct Answers Mud flap Every truck must have a device this device to minimize the spray or splash of water or mud or loose road surface material to the rear Correct Answers Mud flap flares or fuses are not allowed on these trucks Correct Answers those carrying explosives, flammable liquids, compressed gases, or those using compressed gas for fuel flares or fuses are not allowed on these trucks Correct Answers those carrying explosives, flammable liquids, compressed gases, or those using compressed gas for fuel
GVWR? Correct Answers Gross Vehicle Weight Rating high beam headlights must be dimmed at ___ from oncoming traffic and ____ from a vehicle being followed Correct Answers 500ft, 200ft high beam headlights must be dimmed at ___ from oncoming traffic and ____ from a vehicle being followed Correct Answers 500ft, 200ft High beam headlights must be dimmed no less than ____ from oncoming traffic and ____ of a vehicle being followed Correct Answers 500 feet, 200 feet High beam headlights must be dimmed no less than ____ from oncoming traffic and ____ of a vehicle being followed Correct Answers 500 feet, 200 feet Holds emergency and parking brakes back by mechanical force Correct Answers Spring brakes Holds emergency and parking brakes back by mechanical force Correct Answers Spring brakes If a load extends for 4 or more feet past the bed or body of any vehicle, a ___ flag 12 inches square must be attached to the extreme rear of the load during daylight hours. Correct Answers Red
If a load extends four or more feet past the bed or body of any vehicle, a ____ 12 inches square must be attached to the extreme rear of the load during daylight hours Correct Answers Red flag If a load extends four or more feet past the bed or body of any vehicle, a ____ 12 inches square must be attached to the extreme rear of the load during daylight hours Correct Answers Red flag If a load extends four or more feet past the bed or body of any vehicle, a red flag ____ square must be attached to the extreme rear of the load during daylight hours Correct Answers 12 Inches If a load extends four or more feet past the bed or body of any vehicle, a red flag ____ square must be attached to the extreme rear of the load during daylight hours Correct Answers 12 Inches If a load extends four or more feet past the bed or body of any vehicle, at night, a ____ must be attached to the extreme rear of the load and visible for at least 500 feet to the sides and rear Correct Answers Red light If a load extends four or more feet past the bed or body of any vehicle, at night, a ____ must be attached to the extreme rear of the load and visible for at least 500 feet to the sides and rear Correct Answers Red light
if the low air pressure warning for the air brake system comes on you should __ Correct Answers stop and safely park as soon as possible if the low air pressure warning for the air brake system comes on you should __ Correct Answers stop and safely park as soon as possible If your brakes should fail on a level road, you should ____ and use engine compression to slow down Correct Answers Downshift If your brakes should fail on a level road, you should ____ and use engine compression to slow down Correct Answers Downshift If your brakes should fail on the level road, you should _______, and use engine compression to slow down. Correct Answers downshift in newer vehicles, you engage the parking breaks by using this knob Correct Answers diamond-shaped, yellow, push-pull knob in newer vehicles, you engage the parking breaks by using this knob Correct Answers diamond-shaped, yellow, push-pull knob
is important to make sure that the size of the ball and coupler match to prevent ____ of the towed vehicle during transport Correct Answers Separation is important to make sure that the size of the ball and coupler match to prevent ____ of the towed vehicle during transport Correct Answers Separation Make sure the hitch has provisions for the connection of ____ or other approved safety devices. Correct Answers Safety Chains Make sure the hitch has provisions for the connection of ____ or other approved safety devices. Correct Answers Safety Chains Maximum height for all vehicles Correct Answers 13 feet 6 inches Maximum height for all vehicles Correct Answers 13 feet 6 inches Maximum length for any single vehicle (Including Load) Correct Answers 40 feet Maximum length for any single vehicle (Including Load) Correct Answers 40 feet Maximum length for truck-tractor and trailer combination Correct Answers 65 feet Maximum length for truck-tractor and trailer combination Correct Answers 65 feet
never push the break pedal down when the ___ brakes are on Correct Answers spring breaks never push the break pedal down when the ___ brakes are on Correct Answers spring breaks On a rural highway, drivers of motor trucks must not follow within ___ feet of one another except to pass. Correct Answers 400 on rural highways, outside residential area or business districts, drivers of motor trucks must not follow within _____ of one another except to pass Correct Answers 400 ft on rural highways, outside residential area or business districts, drivers of motor trucks must not follow within _____ of one another except to pass Correct Answers 400 ft On rural highways, outside residential areas or business districts, drivers of motor trucks must not follow within ____ of one another except to pass Correct Answers 400 feet On rural highways, outside residential areas or business districts, drivers of motor trucks must not follow within ____ of one another except to pass Correct Answers 400 feet Operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at the end of each day of driving Correct Answers Manual air tank drain
Operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at the end of each day of driving Correct Answers Manual air tank drain Passenger buses and freight carrying vehicles must carry all of the following: Correct Answers Three Flares, Two 12-inch square red cloth flags, Three electric lanterns Poles, piling and logs may project ___ feet beyond the rearmost part of the trailer. Correct Answers 15 poles, pilings, and logs may not extend more than ___ beyond the rear of the trailer Correct Answers 15ft poles, pilings, and logs may not extend more than ___ beyond the rear of the trailer Correct Answers 15ft Protects the tank and the rest of the system from too much pressure. The valve is usually set to open at 150 psi Correct Answers Safety valve Protects the tank and the rest of the system from too much pressure. The valve is usually set to open at 150 psi Correct Answers Safety valve Pumps air into the air storage tanks (reservoirs) Correct Answers Air compressor Pumps air into the air storage tanks (reservoirs) Correct Answers Air compressor
it releases air, something is wrong Correct Answers safety valve 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 Correct Answers safety valve the ___ part of the air brake system tells you how much pressure is left in the air tanks Correct Answers supply pressure gauges the ___ part of the air brake system tells you how much pressure is left in the air tanks Correct Answers supply pressure gauges the ____ shows you how much air pressure you are applying to the breaks Correct Answers application pressure gauge the ____ shows you how much air pressure you are applying to the breaks Correct Answers application pressure gauge the draw bar used to tow another vehicle must not be more than ___ except when transporting objects which can not be easily dismembers like poles, pipes, or machinery Correct Answers 15 ft the draw bar used to tow another vehicle must not be more than ___ except when transporting objects which can not be easily dismembers like poles, pipes, or machinery Correct Answers 15 ft
the equation which equals the total stopping distance for vehicles with air brakes Correct Answers perception distance + reaction distance + brake lag distance + effective braking distance the equation which equals the total stopping distance for vehicles with air brakes Correct Answers perception distance + reaction distance + brake lag distance + effective braking distance the first step to checking the air brakes is to see if the air pressure drops more than ____ pounds in ___ minute Correct Answers 3 pounds in 1 minute the first step to checking the air brakes is to see if the air pressure drops more than ____ pounds in ___ minute Correct Answers 3 pounds in 1 minute the load may not project more than ___ beyond the width of the body Correct Answers 6in the load may not project more than ___ beyond the width of the body Correct Answers 6in The load must be ____ so the covering or load does not come loose, or in any manner become a hazard to other motorists Correct Answers Securely fastened The load must be ____ so the covering or load does not come loose, or in any manner become a hazard to other motorists Correct Answers Securely fastened
