Texas commercial rules
Questions and answers
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How long must you hold a Commercial Learner Permit before you may take the CDL skills test?
At least 14 days
A CLP must be held for a minimum of 14 days before the skills test, including for upgrades and endorsements that need a skills test.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
How old must the CDL holder be who rides with you while you practice on a CLP?
21 or older
The qualified CDL holder supervising a CLP driver must be at least 21 years old.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
Who may supervise you while you drive a CMV on public roads with a CLP?
A CDL holder of the same class sitting next to you
The supervisor must hold the same class of CDL as the vehicle you are driving and sit beside you.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
How long is a Texas Commercial Learner Permit valid?
180 days, or until the base license or lawful presence expires if earlier
A CLP lasts 180 days or until the base license or lawful presence expires, whichever comes first.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
How many times may a Texas CLP be renewed?
One time
A CLP can be renewed only once, within 30 days before it expires.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
When may you renew your Commercial Learner Permit?
Within 30 days before it expires
The one allowed renewal is done 30 days prior to expiration.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
Which statement about the Texas CLP is true?
It is not valid without your base Texas driver license
A CLP works only together with your base Texas driver license and is not proof of identity.
Introduction · Commercial Learner Permit (CLP) ↗PDF, 41 MB -
What score is needed to pass each section of the Texas CDL knowledge exams?
80% or higher
Each knowledge test section requires a score of at least 80% to pass.
Introduction · Knowledge Exams ↗PDF, 41 MB -
Which knowledge exam is given first in Texas?
Texas Commercial Rules
The Texas Commercial Rules test comes first, followed by General Knowledge and then any endorsement tests.
Introduction · Knowledge Exams ↗PDF, 41 MB -
After you fail a knowledge test on your first application date, how long does your application stay active?
90 days
The application remains active for 90 days after an unsuccessful knowledge test.
Introduction · Knowledge Exams ↗PDF, 41 MB -
Besides the 90-day window running out, what else makes a CDL application void?
Three failed attempts
The application is void after 90 days or after three failed attempts, whichever comes first. You must then reapply and pay again.
Introduction · Knowledge Exams ↗PDF, 41 MB -
What kinds of questions make up the Texas CDL knowledge exams?
Multiple choice and matching
The knowledge exams use multiple choice and matching questions.
Introduction · Knowledge Exams ↗PDF, 41 MB -
What must be presented for the vehicle before your CDL skills test begins?
A Vehicle Inspection Report or Vehicle Inspection Certificate
The examiner inspects the vehicle first, and a VIR or VIC must be shown.
Introduction · Safety Inspection ↗PDF, 41 MB -
What happens if your vehicle fails the safety inspection before the skills test?
The skills test is postponed until the vehicle is fixed and re-inspected
A failed inspection postpones the skills test. Fix the problem and have the vehicle inspected again.
Introduction · Safety Inspection ↗PDF, 41 MB -
What flashing lights must a school bus have for the pre-test equipment check?
Two red alternately flashing lamps to the front and rear
A school bus must have two red lamps that flash alternately, at the front and at the rear.
Introduction · Safety Inspection ↗PDF, 41 MB -
How are the three sections of the CDL skills test taken?
Each section must be passed before taking the next
Pre-trip inspection, basic control and road test are taken in order, and each must be passed first.
Introduction · CDL Skills Test ↗PDF, 41 MB -
What is the first step of the basic control skills test?
Forward stop
Basic control starts with the forward stop, then straight-line backing, forward offset tracking and reverse offset backing.
Introduction · Basic Control Skills Test ↗PDF, 41 MB -
In what vehicle must you take the CDL road test?
The vehicle you plan to operate or one in the same class
The road test is taken in the vehicle you plan to drive or one of the same class.
Introduction · CDL Road Test ↗PDF, 41 MB -
During the road test you lightly bump a pole. What is the result?
You fail the test
Any crash during the road test, even a minor one, is a failure.
Introduction · Pass or Fail ↗PDF, 41 MB -
Which of these behaviors leads to failing the road test?
Arguing with the examiner
Uncooperative behavior such as arguing or refusing instructions results in failure.
Introduction · Pass or Fail ↗PDF, 41 MB -
By operating a CMV in Texas, what have you agreed to?
To take a chemical test of breath, blood or urine
Driving a CMV in Texas is implied consent to a chemical test for alcohol or drugs.
Introduction · Implied Consent/Disqualifications ↗PDF, 41 MB -
What happens if you refuse a BAC test while operating a commercial motor vehicle?
You lose your CDL for a period set by law
Refusing a BAC test in a CMV results in losing your CDL for the time the law requires.
Introduction · Implied Consent/Disqualifications ↗PDF, 41 MB -
Which agency does the security risk assessment for a hazardous materials endorsement?
The Transportation Security Administration
Under the USA Patriot Act, TSA checks criminal history and immigration status before a hazmat endorsement is issued.
Introduction · USA Patriot Act ↗PDF, 41 MB -
Does the hazmat background check apply when you renew a hazardous materials endorsement?
Yes, the same requirements apply to renewals
Both new hazmat endorsements and renewals require the background check.
Introduction · USA Patriot Act ↗PDF, 41 MB -
For which classes may a Farm-Related Service Industry (FRSI) CDL be issued?
Class B and Class C only
The FRSI waiver covers Class B and C vehicles. Class A is not included.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
How long is an FRSI CDL valid in each 12-month period?
180 days
A restricted FRSI CDL is valid for 180 days in each 12-month period.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
What is the minimum driving experience to apply for an FRSI CDL?
A valid driver license held for at least one year
An FRSI applicant must have held a valid driver license for at least one year, in any vehicle type.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
An FRSI applicant has five years of driving experience. Which part of the record is reviewed?
The two years before the application date
With over 2 years of experience the review focuses on the two years before the application. With 1 to 2 years the whole history is reviewed.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
How much diesel fuel may an FRSI CDL holder haul?
1,000 gallons or less
An FRSI driver may not haul placarded hazmat except up to 1,000 gallons of diesel and a few other listed loads.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
How much liquid fertilizer may an FRSI CDL holder haul?
3,000 gallons or less
The FRSI limit for liquid fertilizer is 3,000 gallons.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
Which load may an FRSI CDL holder carry in any quantity?
Solid fertilizer not mixed with any organic substance
Solid fertilizer not mixed with organic material has no quantity limit for FRSI drivers.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
How far from the employer’s place of business or the farm being served may an FRSI driver operate?
Within 150 miles
An FRSI CDL driver must stay within 150 miles of the employer’s business or the farm being served.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
For an FRSI driving record, speeding by how much counts as a serious traffic violation?
15 mph or more above the posted limit
Speeding 15 mph or more over the limit is a serious violation that disqualifies a good record.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
Where is a Texas FRSI CDL recognized?
In all states
The FRSI CDL has reciprocity in all states.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
Which seasonal driver may qualify for the FRSI waiver?
An employee of a custom harvester
Farm retail outlets, agrichemical businesses, custom harvesters and livestock feeders may use the waiver.
Introduction · Farm-Related Service Industry (FRSI) Waiver ↗PDF, 41 MB -
A farmer drives a farm truck to move farm supplies for the farm. Within what distance is the farmer exempt from a CDL?
150 miles
A farmer moving farm goods, tools or supplies for the farm within 150 miles does not need a CDL.
Introduction · CDL Exempt Drivers ↗PDF, 41 MB -
Which driver is exempt from needing a CDL in Texas?
A person driving a recreational vehicle for personal use
Recreational vehicles driven for personal use are on the CDL exempt list.
Introduction · CDL Exempt Drivers ↗PDF, 41 MB -
A vehicle controlled by an air carrier is exempt from the CDL requirement when it is driven where?
Only on airport property
Air carrier vehicles are exempt only when driven solely on airport property.
Introduction · CDL Exempt Drivers ↗PDF, 41 MB -
In Texas, a vehicle designed to carry how many passengers, including the driver, falls in Class C?
16 to 23
Texas Class C covers vehicles designed for 16 to 23 passengers including the driver, or placarded hazmat vehicles.
Introduction · What Types (Classes) of CDLs are there? ↗PDF, 41 MB -
In Texas, which class covers a vehicle designed to carry 24 or more passengers including the driver?
Class B
Class B includes any vehicle designed to transport 24 or more passengers, driver included.
Introduction · What Types (Classes) of CDLs are there? ↗PDF, 41 MB -
Who must complete Entry-Level Driver Training (ELDT)?
A first-time applicant for a Class A or Class B CDL
ELDT applies to first Class A or B CDLs, upgrades to A or B, and first S, P or H endorsements.
Introduction · Entry-Level Driving Training (ELDT) ↗PDF, 41 MB -
What must the registration papers carried on a commercial vehicle show?
The empty weight and how much it is registered to haul
Registration papers (receipt for plates) must be on the vehicle and show the empty weight and the registered hauling weight.
Section 14 · 14.1 SPECIAL REQUIREMENTS (PAPERS, PERMITS) ↗PDF, 41 MB -
Your load is wider than Texas law allows. From whom must you get a special permit?
The Texas Department of Motor Vehicles
Loads heavier, longer, wider or higher than allowed need a special permit from the Texas Department of Motor Vehicles.
Section 14 · 14.1 SPECIAL REQUIREMENTS (PAPERS, PERMITS) ↗PDF, 41 MB -
When will a special permit for an oversize load not be granted?
When the load can reasonably be dismantled
If the load can reasonably be taken apart to legal size, no permit is given.
Section 14 · 14.1 SPECIAL REQUIREMENTS (PAPERS, PERMITS) ↗PDF, 41 MB -
During what hours must a truck outside city limits carry flares, lanterns or reflectors?
From a half hour after sunset to a half hour before sunrise
Warning devices are required outside city limits or on divided highways from a half hour after sunset until a half hour before sunrise.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
How many flares, red electric lanterns or red reflectors must a truck carry at night outside city limits?
At least three
The law requires at least three flares, three red electric lanterns or three portable red emergency reflectors.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
When lighted lamps are not required, what must be used in place of flares or reflectors?
Two red flags
In daylight hours, two red flags take the place of flares, lights or reflectors.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
Which vehicle must never use flares or other flame signals?
A cargo tank truck hauling flammable liquid
Vehicles carrying explosives, flammable liquid or gas cargo tanks, and vehicles fueled by compressed gas must not use flame signals.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
Your truck breaks down on the highway shoulder. What does Texas require you to do before anything else?
Put out the proper flares, flags or reflectors
The first duty of a driver with a disabled vehicle is to set out the proper warning devices.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
A truck stops on the shoulder. Hazard warning lights are required if the truck is at least how wide?
80 inches
Vehicles 80 inches or more wide, or 30 feet or more long, must turn on hazard lights at once when stopped on the road or shoulder.
Section 14 · Hazard Warning Signal Lights ↗PDF, 41 MB -
A stopped truck must use hazard warning lights if its overall length is at least how long?
30 feet
The hazard light rule applies to vehicles 30 feet or more in overall length, or 80 inches or more wide.
Section 14 · Hazard Warning Signal Lights ↗PDF, 41 MB -
When may a large truck stopped on the roadway skip its hazard warning lights?
When legally parked inside city limits
Hazard lights are not needed when legally parked inside city limits or stopped to load or unload passengers.
Section 14 · Hazard Warning Signal Lights ↗PDF, 41 MB -
What fire extinguisher must buses and taxis hauling passengers for hire carry?
A chemical type of at least one quart capacity
School buses, buses, taxis and other passenger vehicles for hire must carry a chemical extinguisher of at least one quart.
Section 14 · Fire Extinguisher ↗PDF, 41 MB -
How must the fire extinguisher be kept on a vehicle subject to federal safety regulations?
Filled, securely mounted and readily accessible
The extinguisher must be properly filled, securely mounted and easy to reach.
Section 14 · Fire Extinguisher ↗PDF, 41 MB -
On a truck 80 inches or more wide, at what height must reflectors be mounted?
Between 24 and 60 inches above the ground
Reflectors go not less than 24 inches and not more than 60 inches above the ground.
Section 14 · Lighting and Reflectors ↗PDF, 41 MB -
Which vehicle is exempt from lighting and reflector requirements?
A mobile home being moved under permit
Mobile homes moved under permit do not need to meet the lighting and reflector rules.
Section 14 · Lighting and Reflectors ↗PDF, 41 MB -
A trailer 80 inches or more wide needs an intermediate side marker lamp and reflector only when it is how long?
30 feet or more
The intermediate side marker lamp and reflector are required only on trailers 30 feet or longer.
Section 14 · SPECIAL REQUIREMENTS (EQUIPMENT) ↗PDF, 41 MB -
When may a tow truck use flashing lights?
At a crash scene under the direction of a law enforcement officer
Tow trucks may use flashing lights under police direction at a crash scene or while hooking up a disabled vehicle in the roadway.
Section 14 · Flashing Lights ↗PDF, 41 MB -
At night, a farm tractor without other required lamps must show a white front light visible from how far?
1,000 feet
Animal-drawn vehicles, farm tractors and road machinery at night need a white front light visible for 1,000 feet.
Section 14 · Special Regulations for Certain Vehicles ↗PDF, 41 MB -
A slow farm vehicle at night uses one red rear light and two red reflectors. From how far must the reflectors be visible?
600 feet
The rear may have one red light visible for 1,000 feet plus two red reflectors visible for 600 feet.
Section 14 · Special Regulations for Certain Vehicles ↗PDF, 41 MB -
Trailers with a gross weight of how much or less are exempt from brake requirements?
4,500 pounds
Trailers, semitrailers and pole trailers weighing 4,500 pounds or less need no brakes.
Section 14 · Brakes ↗PDF, 41 MB -
A trailer weighs 10,000 pounds gross and is towed at more than 30 mph. What brakes must it have?
Brakes acting on both wheels of the rear axle
Trailers over 4,500 and up to 15,000 pounds need rear axle brakes when driven above 30 mph. At 30 mph or less they need none.
Section 14 · Brakes ↗PDF, 41 MB -
How must the brakes of a combination of vehicles be arranged?
One control device can operate all brakes
One control must be able to apply all brakes, though extra controls for towed vehicles are allowed.
Section 14 · Brakes ↗PDF, 41 MB -
Surge or inertia brakes may be used on trailers with a gross weight up to how much?
15,000 pounds
Surge or inertia brake systems are allowed on trailers and semitrailers of 15,000 pounds or less.
Section 14 · Brakes ↗PDF, 41 MB -
A combination with a trailer of 3,000 pounds or less must be able to stop within what distance from 20 mph?
40 feet
If the trailer and combination are 3,000 pounds or less, the stop from 20 mph must be within 40 feet.
Section 14 · Brakes ↗PDF, 41 MB -
A combination over 3,000 pounds must be able to stop within what distance from 20 mph?
50 feet
Heavier combinations over 3,000 pounds must stop within 50 feet when traveling 20 mph.
Section 14 · Brakes ↗PDF, 41 MB -
How close to the road surface must mud flaps reach?
Within 8 inches
Mud flaps must reach to within 8 inches of the highway surface to stop slinging mud and slush.
Section 14 · Mud Flaps ↗PDF, 41 MB -
Which vehicle does not need mud flaps?
A truck tractor driven alone without a semitrailer
Trucks and trailers with four or more rear tires need mud flaps, but pole trailers and a tractor running alone do not.
Section 14 · Mud Flaps ↗PDF, 41 MB -
What top speed defines a slow-moving vehicle that must show the slow-moving vehicle emblem?
25 mph or less
Slow-moving vehicles are designed to operate at 25 mph or less and must display the emblem.
Section 14 · Slow-Moving Vehicle Emblem ↗PDF, 41 MB -
Where is it unlawful to put a slow-moving vehicle emblem?
On stationary objects such as mailboxes
The emblem may be used only on slow-moving vehicles, never on other vehicles or stationary objects.
Section 14 · Slow-Moving Vehicle Emblem ↗PDF, 41 MB -
Which wheel equipment may be used on a Texas highway?
Tire chains for safety
Rim extensions that damage the road are unlawful, but tire chains for safety are allowed.
Section 14 · Unlawful Equipment ↗PDF, 41 MB -
Your loaded truck is about to go under an overpass. Who is responsible for making sure the load will clear it?
The driver
The driver must make sure the load will safely pass under every bridge or overpass on the route. The legal height limit is 14 feet.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
What is the maximum width of a vehicle and its load in Texas, without exceptions?
102 inches
Vehicles including their loads may not be more than 102 inches wide.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
What is the maximum length of a single motor vehicle other than a truck tractor?
45 feet
A single motor vehicle that is not a truck tractor may be up to 45 feet long.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
In a truck tractor and semitrailer combination, how long may the semitrailer be?
59 feet
The semitrailer may not exceed 59 feet in a tractor-semitrailer combination.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
In a truck tractor, semitrailer and trailer combination, what is the length limit for each trailer?
28-1/2 feet
Each semitrailer or trailer in a double combination may be no longer than 28-1/2 feet.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
What is the length limit for a combination of vehicles other than a truck tractor combination?
65 feet
Combinations other than truck tractor combinations may not exceed 65 feet.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
How many vehicles may be operated together in one combination in Texas?
Not more than three
No more than three vehicles may be coupled in a combination.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
A motor vehicle has an unloaded weight under 2,500 pounds. How many other vehicles may it tow?
Only one
A vehicle weighing less than 2,500 pounds unloaded may not be coupled with more than one other vehicle.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Without a permit, what is the greatest gross weight allowed for any vehicle or combination including the load?
80,000 pounds
The top weight for any vehicle or combination with its load is 80,000 pounds, unless an oversize/overweight permit is obtained.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Your gross weight is over the legal maximum. Beyond what tolerance may you be required to unload?
5%
If you exceed the legal maximum plus a 5% tolerance, you may have to unload down to that limit.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Which overweight truck is not required to unload any part of its load?
One carrying livestock from the place of production to market
Trucks carrying livestock, timber, pulpwood or natural-state farm products from production to market or first processing need not unload.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Without a special permit, how far may a load extend beyond the front of a vehicle?
3 feet
A load may extend up to three feet beyond the front without a special permit.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Without a special permit, how far may a load extend beyond the rear of a vehicle?
4 feet
The rear overhang limit without a permit is four feet.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
A load sticks out more than four feet past the rear in daylight. What must be attached to its end?
A red flag at least 12 inches square
In daylight, a red flag at least twelve inches square marks the end of the extension.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
At night, a load extending more than four feet past the rear must show a red light visible from how far?
500 feet
At night the rear extension needs a burning red light visible for 500 feet.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Vehicles used only to haul poles or pipes may exceed the extension limits. What limits still apply?
65 feet long and only between sunrise and sunset
Pole and pipe haulers may not exceed 65 feet and may operate only between sunrise and sunset.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
When one vehicle tows another, how long may the drawbar, chain or cable between them be?
No longer than 15 feet
The tow connection must not be longer than fifteen feet, except for pole trailers.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
What must be attached to a chain, rope or cable used to tow another vehicle?
A white flag at least 12 inches square
A towing chain, rope or cable must carry a white flag not less than twelve inches square.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
A vehicle with metal tires needs a special permit to use the highway if it weighs at least how much?
5,000 pounds
Vehicles weighing 5,000 pounds or more with metal tires need a special permit.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
You haul loose gravel that could blow from the bed. What must cover the top of the load?
A canvas or tarpaulin firmly secured front and back
Loose material that can blow or spill must be covered with a secured tarp, and the bed must be enclosed on all sides.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Which loose load is not covered by the Texas loose material rules?
Agricultural products in their natural state
The loose material rules cover dirt, sand, gravel and wood chips, but not farm products in their natural state.
Section 14 · 14.3 SPECIAL REQUIREMENTS-LIMITATIONS ↗PDF, 41 MB -
Highway maintenance machinery is exempt from width limits on which roads?
All highways except the Interstate system, in daylight
Water well drilling machinery, highway machinery and farm equipment are exempt from width limits except on the Interstate, during daylight.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A single vehicle with a “Cotton Vehicle” plate hauls seed cotton modules. How wide may it be?
120 inches
A registered cotton vehicle may be up to 120 inches wide.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
How wide may a vehicle carrying round (cylindrical) hay bales be?
144 inches
Vehicles carrying cylindrically shaped bales of hay may not exceed 144 inches in width.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A motor bus with air brakes and three axles may be how long?
45 feet
Buses with air brakes and three or more axles, or four rear tires, may be 45 feet. Other buses are limited to 35 feet.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
When do the Texas length limits for vehicles and combinations not apply?
When operated only within city limits
Length requirements do not apply to vehicles operated only within city limits.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
How long may a combination hauling poles or unrefined timber from the forest to a mill be?
Up to 90 feet
A non-tractor combination of up to 90 feet may haul poles, piling and timber from sunrise to sunset.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A 90-foot combination hauling timber may take it to a mill no more than how far away?
125 miles
The 90-foot timber exception applies only for hauls from the forest to a mill not more than 125 miles away.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A 75-foot combination hauling poles for power line maintenance may not exceed what speed?
50 mph
For a yearly fee, such combinations may run from sunrise to sunset at no more than 50 mph.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A forklift carried at the rear of a trailer to unload it may extend how far beyond the rear?
Up to 7 feet
A motor vehicle used to load or unload the trailer may extend up to seven feet past the rear.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
What is the maximum length of a single motor vehicle used only to transport cotton?
48 feet
A single vehicle used only for cotton or cotton equipment may be up to 48 feet long.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
Which vehicles are exempt from Texas length, width and weight rules?
Fire department vehicles
Fire department vehicles are exempt from length, width and weight regulations.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
A combination carrying a combine for farm custom harvesting may be how long overall?
Not more than 75 feet
Combinations hauling a custom harvesting combine may be up to 75 feet long.
Section 14 · 14.4 SPECIAL REQUIREMENTS EXCEPTIONS TO STANDARD VEHICLE SIZE REQUIREMENTS ↗PDF, 41 MB -
You need a lower gear for a long downgrade. When should you shift?
Before starting down the hill
Coasting is unlawful for a CMV, so shift to the lower gear before you start down.
Section 14 · 14.5 SPECIAL REQUIREMENTS OPERATING RULES ↗PDF, 41 MB -
How far back must a truck stay when following another vehicle on the highway?
Far enough for another vehicle to pass and enter the space safely
A following truck must leave room for an overtaking vehicle to move safely into the gap.
Section 14 · 14.5 SPECIAL REQUIREMENTS OPERATING RULES ↗PDF, 41 MB -
Which vehicle must stop at all railroad grade crossings unless a signal or officer directs traffic on?
A school bus
Buses, school buses and placarded vehicles must stop at railroad crossings.
Section 14 · 14.5 SPECIAL REQUIREMENTS OPERATING RULES ↗PDF, 41 MB -
Where do the Texas railroad stop rules for explosive trucks not apply?
At abandoned tracks and industrial switching tracks
The stop rules do not apply at streetcar crossings, abandoned tracks, industrial switching tracks, or where a signal or officer waves traffic on.
Section 14 · 14.5 SPECIAL REQUIREMENTS OPERATING RULES ↗PDF, 41 MB -
Which equipment must stop at every railroad grade crossing?
Super-heavy equipment such as crawler tractors
Crawler tractors, steam shovels, derricks, rollers and other super-heavy equipment must stop at all crossings.
Section 14 · 14.5 SPECIAL REQUIREMENTS OPERATING RULES ↗PDF, 41 MB -
When a tractor-trailer approaches a corner to turn right, about how far from the curb should it be?
About four feet
Approach about four feet from the curb, close enough to keep a car from passing on the right.
Section 14 · 14.6 SPECIAL REQUIREMENTS SAFETY PRACTICES ↗PDF, 41 MB -
You must back a truck into or out of a driveway. Which way is safer?
Back into the driveway from the street
Back in from the street so you can drive out forward and see where you are going.
Section 14 · 14.6 SPECIAL REQUIREMENTS SAFETY PRACTICES ↗PDF, 41 MB -
When backing across a sidewalk into the street, where should you stop?
At the sidewalk and again at the curb
Stop at the sidewalk to check for children, then stop again at the curb to check traffic.
Section 14 · 14.6 SPECIAL REQUIREMENTS SAFETY PRACTICES ↗PDF, 41 MB -
How much room should you leave to the left of a bicycle or motorcycle when passing it?
At least six feet
Air around a large vehicle can pull a two-wheeler two or three feet toward it, so leave at least six feet.
Section 14 · 14.6 SPECIAL REQUIREMENTS SAFETY PRACTICES ↗PDF, 41 MB -
There is oncoming traffic and you want to pass a cyclist. What should you do?
Slow down and follow until oncoming traffic clears
Never share a lane with a two-wheeled vehicle. Wait behind it until you can move fully into the next lane.
Section 14 · 14.6 SPECIAL REQUIREMENTS SAFETY PRACTICES ↗PDF, 41 MB -
Where must Texas vehicles be registered?
In the county of residence
All vehicles must be registered in the county of residence.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
Farm trailers used temporarily on the highway need no registration if they weigh no more than how much gross?
4,000 pounds
Farm and certain fertilizer and cottonseed trailers up to 4,000 pounds gross need no registration or plate.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
Farm trailers over 4,000 pounds may use a special yearly $5.00 plate instead of registration up to what gross weight?
20,000 pounds
Farm and cotton trailers over 4,000 and not over 20,000 pounds may use the distinguishing $5.00 plate.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
Nonresident truck owners moving farm products during harvest may get temporary registration permits for how long?
30 days
Nonresidents may receive 30-day temporary permits for certain harvest season movements.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
For how many days are buyer’s temporary cardboard tags recognized?
20 days
Buyer’s temporary cardboard tags are recognized for 20 days.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
For which use may a farm registered vehicle not be used?
Gainful employment
Farm vehicles may carry the family to church, school or the doctor, but not be used for gainful employment.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
After you become a Texas resident or start work in Texas, how long are out-of-state plates recognized?
30 days
Out-of-state plates are recognized for 30 days after establishing residency or gainful employment.
Section 14 · 14.7 SPECIAL REQUIREMENTS REGISTRATION OF VEHICLES ↗PDF, 41 MB -
What following distance does a professional truck driver keep on the open road?
Four seconds
Keep a four-second following distance on the open road.
Section 14 · Tailgating ↗PDF, 41 MB -
In bad weather, to what should you increase your following gap?
6 to 8 seconds
Bad weather calls for a gap of 6 to 8 seconds to allow for poor traction and more reaction time.
Section 14 · Tailgating ↗PDF, 41 MB -
If you double your speed, how does your stopping distance change?
It becomes four times greater
Stopping distance grows much faster than speed. Twice the speed means four times the distance.
Section 14 · Speeding ↗PDF, 41 MB -
How much can fuel economy improve by driving 55 mph instead of 65 mph?
As much as a mile per gallon
Obeying the speed limit can raise fuel economy by up to a mile per gallon at 55 compared to 65 mph.
Section 14 · Speeding ↗PDF, 41 MB -
How should you pass an RV or a car pulling a trailer?
With care and as far to the left as safely possible
These vehicles are easily upset by truck turbulence, so slow down, give room and pass as far left as is safe.
Section 14 · School Buses, Recreational Vehicles, and Others ↗PDF, 41 MB
Questions and answers by topic
- Licenses, tests and disqualifications83
- Vehicle inspection67
- Control, shifting and seeing54
- Communicating, speed and space85
- Seeing hazards, distraction and road rage78
- Night, fog, winter and hot weather72
- Railroad crossings and mountain driving53
- Emergencies, ABS and skids68
- Accidents, fires, alcohol and hazmat rules75
- Transporting cargo49
- Transporting passengers82
- Air brake parts and dual systems77
- Inspecting and using air brakes79
- Driving combination vehicles56
- Combination air brakes, coupling and inspection90
- Doubles and triples57
- Tank vehicles57
- Hazmat rules, classes and papers84
- Loading, bulk and driving with hazmat86
- Hazmat emergencies66
- School bus danger zones and loading67
- School bus emergencies, crossings and safety75