Texas CDL Permit Study Exam and
verified answers|get it 100% correct
(Latest 2025/2026) |complete guide
What is the maximum speed limit for heavy trucks on the freeway at night? - CORRECT ANSWERS
65, same as cars
What should you do when going down a steep grade in a heavy vehicle? - CORRECT ANSWERS
Use a low gear
What should you do when turning right in a vehicle which is too large to turned by staying on the proper
lane? - CORRECT ANSWERS 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? - CORRECT
ANSWERS Visible 1,000 ft. from the front 2 red lights, visible 1,000 ft. from the back,
and 2 red reflectors from the back
What are the vehicle size and weight requirements for class A B and C Driver license? - CORRECT
ANSWERS A - 26,001 and up or a trailer over 10,000 B- 26,001 and up or a trailer 10,000
or less C- 10,000 or less or a trailer 20,000
What should be the first action of the driver of a disabled truck or bus? - CORRECT ANSWERS
Put out the proper flares, flags, or reflectors
Where should flares be placed around a truck when necessary? - CORRECT ANSWERS
On a 2-way 10 in front, 100 behind on a divided highway 10 inch front 100 to 200 behind. Low vision 100
to 500 feet behind
What are the height limits between which reflectors must be mounted? - CORRECT ANSWERS
At least 24 inches high and no more than 60 inches high
What color should clearance lamps, side marker lamps, or reflectors mounted on or near the front of a
vehicle be? - CORRECT ANSWERS Amber
What is the greatest height allowed by state law for a vehicle including its load? - CORRECT ANSWERS
14 Ft.
What is the greatest weight allowed by state law for a vehicle including its load? - CORRECT ANSWERS
80,000 pounds
What should be the greatest distance between two vehicles when one vehicle is towing the other? -
CORRECT ANSWERS 15 Ft.
What should you do when hauling equipment that is wider, heavier, or longer than the law permits? -
CORRECT ANSWERS Obtain an oversize/overweight permit
, When are turn indicator signals required on a vehicle? - CORRECT ANSWERS All vehicles
unless manufactured prior to 1960
Outside the city limits, what type of vehicle must stop at all railroad crossings? - CORRECT ANSWERS
Buses carrying passengers for hire
What type of vehicles are required to have mud flaps? - CORRECT ANSWERS
Truck/Trailor with 4 or more tires on rear axles
What is the maximum speed limit for a taxi cab on a numbered U.S. or state highway during the day? -
CORRECT ANSWERS 70 (same as cars)
What is the maximum speed limit for motorbuses at night on numbered U.S. and state highways -
CORRECT ANSWERS 65 (same as cars) 55 for school buses
What is the greatest width ordinarily allowed by state law for a vehicle on the highway? - CORRECT
ANSWERS 102 inches
Flashing lights are permitted on what types of vehicles? - CORRECT ANSWERS
Emergency vehicles, highway maintenance equipment, snow removal equipment, church buses, school
buses, tow trucks
What usually determines the number if trailers that may ordinarily be pulled by one vehicle? - CORRECT
ANSWERS The unloaded weight of the vehicle if it is less than 2,500 pounds only one
trailer is allowed. If is is over 2,500 pounds two trailers are allowed.
What is the greatest length ordinarily allowed by state law for any combination of truck or trailer? -
CORRECT ANSWERS 65 ft.
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? - CORRECT ANSWERS 4,500 pounds
When towing another vehicle with a chain or cable, the flag that is attached to the chain or cable must
be what color? - CORRECT ANSWERS White
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 - CORRECT ANSWERS One
When mud flaps are required on a vehicle, they must come within how many inches if the surface? -
CORRECT ANSWERS 8 inches
What are the regulations regarding lugs and flanges on Texas state highway? - CORRECT ANSWERS
A tire may not have protuberance. other than rubber, unless it does not damage the highway
What are the limits on load extensions over the front and rear of vehicles? - CORRECT ANSWERS
May not extend more than 2 feet in the front and 4 feet in the back
verified answers|get it 100% correct
(Latest 2025/2026) |complete guide
What is the maximum speed limit for heavy trucks on the freeway at night? - CORRECT ANSWERS
65, same as cars
What should you do when going down a steep grade in a heavy vehicle? - CORRECT ANSWERS
Use a low gear
What should you do when turning right in a vehicle which is too large to turned by staying on the proper
lane? - CORRECT ANSWERS 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? - CORRECT
ANSWERS Visible 1,000 ft. from the front 2 red lights, visible 1,000 ft. from the back,
and 2 red reflectors from the back
What are the vehicle size and weight requirements for class A B and C Driver license? - CORRECT
ANSWERS A - 26,001 and up or a trailer over 10,000 B- 26,001 and up or a trailer 10,000
or less C- 10,000 or less or a trailer 20,000
What should be the first action of the driver of a disabled truck or bus? - CORRECT ANSWERS
Put out the proper flares, flags, or reflectors
Where should flares be placed around a truck when necessary? - CORRECT ANSWERS
On a 2-way 10 in front, 100 behind on a divided highway 10 inch front 100 to 200 behind. Low vision 100
to 500 feet behind
What are the height limits between which reflectors must be mounted? - CORRECT ANSWERS
At least 24 inches high and no more than 60 inches high
What color should clearance lamps, side marker lamps, or reflectors mounted on or near the front of a
vehicle be? - CORRECT ANSWERS Amber
What is the greatest height allowed by state law for a vehicle including its load? - CORRECT ANSWERS
14 Ft.
What is the greatest weight allowed by state law for a vehicle including its load? - CORRECT ANSWERS
80,000 pounds
What should be the greatest distance between two vehicles when one vehicle is towing the other? -
CORRECT ANSWERS 15 Ft.
What should you do when hauling equipment that is wider, heavier, or longer than the law permits? -
CORRECT ANSWERS Obtain an oversize/overweight permit
, When are turn indicator signals required on a vehicle? - CORRECT ANSWERS All vehicles
unless manufactured prior to 1960
Outside the city limits, what type of vehicle must stop at all railroad crossings? - CORRECT ANSWERS
Buses carrying passengers for hire
What type of vehicles are required to have mud flaps? - CORRECT ANSWERS
Truck/Trailor with 4 or more tires on rear axles
What is the maximum speed limit for a taxi cab on a numbered U.S. or state highway during the day? -
CORRECT ANSWERS 70 (same as cars)
What is the maximum speed limit for motorbuses at night on numbered U.S. and state highways -
CORRECT ANSWERS 65 (same as cars) 55 for school buses
What is the greatest width ordinarily allowed by state law for a vehicle on the highway? - CORRECT
ANSWERS 102 inches
Flashing lights are permitted on what types of vehicles? - CORRECT ANSWERS
Emergency vehicles, highway maintenance equipment, snow removal equipment, church buses, school
buses, tow trucks
What usually determines the number if trailers that may ordinarily be pulled by one vehicle? - CORRECT
ANSWERS The unloaded weight of the vehicle if it is less than 2,500 pounds only one
trailer is allowed. If is is over 2,500 pounds two trailers are allowed.
What is the greatest length ordinarily allowed by state law for any combination of truck or trailer? -
CORRECT ANSWERS 65 ft.
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? - CORRECT ANSWERS 4,500 pounds
When towing another vehicle with a chain or cable, the flag that is attached to the chain or cable must
be what color? - CORRECT ANSWERS White
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 - CORRECT ANSWERS One
When mud flaps are required on a vehicle, they must come within how many inches if the surface? -
CORRECT ANSWERS 8 inches
What are the regulations regarding lugs and flanges on Texas state highway? - CORRECT ANSWERS
A tire may not have protuberance. other than rubber, unless it does not damage the highway
What are the limits on load extensions over the front and rear of vehicles? - CORRECT ANSWERS
May not extend more than 2 feet in the front and 4 feet in the back
