Texas Commercial Rules
Texas Commercial Rules Exam
Questions and Answers 2025
When mud flaps are required on trucks or trailers, they must reach how close to the
surface of the highway? -Correct Answer ✔8 inches
Outside business and residential districts, school buses and other buses carrying
passengers must __________ -Correct Answer ✔Always stop at uncontrolled railroad
crossings
State length requirements for vehicles and combinations of vehicles do not apply
__________ -Correct Answer ✔Within city limits
Except for vehicles carrying cotton, cotton related equipment, or cylindrically shaped
bales of hay, vehicles including the loads they transport may not be wider than
___________ -Correct Answer ✔102 inches
What is the maximum weight for a single or combination vehicle including its load -
Correct Answer ✔80,000 pounds
You may not drive a CMV with _______ on a high way. -Correct Answer ✔studded rims
In bad weather, increase your following distance to -Correct Answer ✔6-8 seconds
All motor vehicles, trailers manufactured after __________ must be equipped with turn
signals -Correct Answer ✔1959
If you are being tailgated, you should: -Correct Answer ✔Increase your following
distance
Combination vehicles weighing 3,000 pounds or less must be able to stop within
_________ feet when traveling 20mph. -Correct Answer ✔40
Every vehicle carrying passengers for hire or lease must carry a chemical type fire
extinguisher with a capacity of at least -Correct Answer ✔1 quart
A slow moving vehicle emblem must be affixed tot he rear of every vehicle designed to
operate at _______ mph or less. -Correct Answer ✔25
No vehicle, including the load that it is hauling may be more than _______ tall -Correct
Answer ✔14 feet
Texas Commercial Rules
, Texas Commercial Rules
The red lights on the rear of a farm tractor or roadway maintenance vehicle must be
visible for how many feet? -Correct Answer ✔1,000
If you need information on how to register a particular vehicle, consult your
____________ -Correct Answer ✔county tax assessor
To prevent damage to roadways, it is unlawful to operate a vehicle whose wheels have -
Correct Answer ✔Studs, cleats, and spikes
When operated on a highway at night, such slow moving vehicles as animal drawn
carts, farm tractors, and road machinery must have _________ -Correct Answer ✔2
white light on the front and 1 red lights on the rear
On a steep downgrade, you should -Correct Answer ✔shift into a lower gear
A semi trailer may not exceed the length of ________ when operated in a tractor,
semitrailer, and trailer combination -Correct Answer ✔28.5 feet
The maximum length for a single mother vehicle other than a truck tractor is usually -
Correct Answer ✔45 feet
A semi trailer may not exceed ? feet when operated in a truck tractor and semitrailer
combo -Correct Answer ✔59 feet
When transporting loose materials such as sand, wood chips, or gravel you must do
what? -Correct Answer ✔secure the load to prevent it from blowing or spilling out
Every trailer that is at least 80 inches wide must have _______ reflectors on its rear -
Correct Answer ✔2
On an open road, maintain a following distance of at least _________ seconds -Correct
Answer ✔4
Trailers, semitrailers, and pole trainers that weigh more than 4,5000 pounds but no
more than 15,000 pounds and are operated at speeds over 30mph -Correct Answer
✔Must have brakes on both wheels of the rear axle
When lighted lamps are not required, __________ must be used instead of flares, lights
or reflectors -Correct Answer ✔Two red flags
Drivers who are operating _________ must be in possession of registration papers at all
times. -Correct Answer ✔All of the above
When backing a large truck you should -Correct Answer ✔Have something to guide you
Texas Commercial Rules
Texas Commercial Rules Exam
Questions and Answers 2025
When mud flaps are required on trucks or trailers, they must reach how close to the
surface of the highway? -Correct Answer ✔8 inches
Outside business and residential districts, school buses and other buses carrying
passengers must __________ -Correct Answer ✔Always stop at uncontrolled railroad
crossings
State length requirements for vehicles and combinations of vehicles do not apply
__________ -Correct Answer ✔Within city limits
Except for vehicles carrying cotton, cotton related equipment, or cylindrically shaped
bales of hay, vehicles including the loads they transport may not be wider than
___________ -Correct Answer ✔102 inches
What is the maximum weight for a single or combination vehicle including its load -
Correct Answer ✔80,000 pounds
You may not drive a CMV with _______ on a high way. -Correct Answer ✔studded rims
In bad weather, increase your following distance to -Correct Answer ✔6-8 seconds
All motor vehicles, trailers manufactured after __________ must be equipped with turn
signals -Correct Answer ✔1959
If you are being tailgated, you should: -Correct Answer ✔Increase your following
distance
Combination vehicles weighing 3,000 pounds or less must be able to stop within
_________ feet when traveling 20mph. -Correct Answer ✔40
Every vehicle carrying passengers for hire or lease must carry a chemical type fire
extinguisher with a capacity of at least -Correct Answer ✔1 quart
A slow moving vehicle emblem must be affixed tot he rear of every vehicle designed to
operate at _______ mph or less. -Correct Answer ✔25
No vehicle, including the load that it is hauling may be more than _______ tall -Correct
Answer ✔14 feet
Texas Commercial Rules
, Texas Commercial Rules
The red lights on the rear of a farm tractor or roadway maintenance vehicle must be
visible for how many feet? -Correct Answer ✔1,000
If you need information on how to register a particular vehicle, consult your
____________ -Correct Answer ✔county tax assessor
To prevent damage to roadways, it is unlawful to operate a vehicle whose wheels have -
Correct Answer ✔Studs, cleats, and spikes
When operated on a highway at night, such slow moving vehicles as animal drawn
carts, farm tractors, and road machinery must have _________ -Correct Answer ✔2
white light on the front and 1 red lights on the rear
On a steep downgrade, you should -Correct Answer ✔shift into a lower gear
A semi trailer may not exceed the length of ________ when operated in a tractor,
semitrailer, and trailer combination -Correct Answer ✔28.5 feet
The maximum length for a single mother vehicle other than a truck tractor is usually -
Correct Answer ✔45 feet
A semi trailer may not exceed ? feet when operated in a truck tractor and semitrailer
combo -Correct Answer ✔59 feet
When transporting loose materials such as sand, wood chips, or gravel you must do
what? -Correct Answer ✔secure the load to prevent it from blowing or spilling out
Every trailer that is at least 80 inches wide must have _______ reflectors on its rear -
Correct Answer ✔2
On an open road, maintain a following distance of at least _________ seconds -Correct
Answer ✔4
Trailers, semitrailers, and pole trainers that weigh more than 4,5000 pounds but no
more than 15,000 pounds and are operated at speeds over 30mph -Correct Answer
✔Must have brakes on both wheels of the rear axle
When lighted lamps are not required, __________ must be used instead of flares, lights
or reflectors -Correct Answer ✔Two red flags
Drivers who are operating _________ must be in possession of registration papers at all
times. -Correct Answer ✔All of the above
When backing a large truck you should -Correct Answer ✔Have something to guide you
Texas Commercial Rules
