25 questions per attempt
20 correct answers are needed for an 80% practice passing score.

Your One-Stop CDL Shop!
Vehicle Rental & Familiarization
Pre-trip • Backing • Road
CALL TODAY / START TODAY(469) 332-7188Provided at no additional charge when eligibility requirements are satisfied.
Separate ELDT activity for eligible customers who purchase qualifying CDL preparation services.
Proficiency-based completion.


Air Brakes preparation is about understanding how the system works and how a driver recognizes a problem. Use this topic to connect components, controls, warning devices and safe braking concepts before testing your recall with practice questions.
Read the air-brake material with a simple component list beside you. Connect each component to its purpose, then review the inspection or operating condition described in the question. Similar-looking answers are easier to distinguish when you understand the system behind them.
Review Section(s) 5 of the Texas Commercial Motor Vehicle Drivers Handbook. Use the handbook to understand the material before practicing questions.
Open handbook sections for this topic (1.0 MB) ↗
Open the complete Texas CDL handbook ↗ · Texas DPS handbook source ↗
20 correct answers are needed for an 80% practice passing score.
Online practice access is being prepared and is not available for purchase yet.
The brake system on your skills-test vehicle matters to your licensing plan. Tell the team about your current permit and the equipment you intend to operate before discussing a rental. An air-brake practice score does not establish the vehicle or restrictions for your license.
Test vehicles, brakes and restrictions · General Knowledge preparation
Review practice selections and prices or ask about your next CDL step.
For the Class A air-brake-equipped vehicle path, these four main topics apply. Class B does not require the Combination knowledge test; Air Brakes applies when the vehicle is equipped with air brakes. Texas DPS determines the requirements for your vehicle and license.
These are preparation resources. Texas DPS administers the official knowledge tests and determines licensing requirements. CLP preparation is separate from applicable FMCSA ELDT requirements.
Choose any purchased topic in any order. Retest as often as you like during its 30-day access window. Every new attempt selects questions randomly and shuffles the answer choices.
Aim for at least 95% on five consecutive attempts for this topic. A lower score resets the streak. This is our practice readiness goal; it does not guarantee the official Texas DPS test result.
Online registration and payment are being connected. You can save and review your selections; call (469) 332-7188 for help completing registration and payment.