20 questions · explanations included
Hazards & Driver Fitness
20 supplemental general-knowledge questions on alcohol rules, fatigue, hazard clues, traction and braking distance.
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50 questions · explanations included
Skills Preparation
50 study questions on modernized vehicle inspection, basic controls and road-test habits. Confirm your testing location’s format. These quizzes do not replace supervised practice or the hands-on test.
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20 questions · explanations included
Licensing & CLP
20 administrative study questions on permits, training and medical certification. Separate from knowledge-exam preparation.
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30 questions · explanations included
Texas Commercial Rules
30 questions on Texas dimensions, weights, equipment, permits and operating rules.
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100 questions · explanations included
General Knowledge
100 questions on inspection, vehicle control, space, weather, emergencies and cargo safety.
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50 questions · explanations included
Hazardous Materials (H)
50 questions on shipping papers, placards, loading, security and emergency response.
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30 questions · explanations included
School Bus (S)
30 questions on danger zones, loading, crossings, evacuation and student safety.
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45 questions · explanations included
Combination Vehicles
45 questions on trailer control, air connections, coupling and uncoupling.
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25 questions · explanations included
Doubles & Triples (T)
25 questions on multi-trailer handling and dolly safety. Not permission to operate any combination on any route.
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50 questions · explanations included
Air Brakes
50 questions on pressure checks, brake systems, inspections and stopping safely.
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25 questions · explanations included
Tank Vehicles (N)
25 questions on tank inspection, surge, loading and smooth control.
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30 questions · explanations included
Passenger Vehicles (P)
30 questions on Texas bus classification, inspections and passenger safety.
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Know what this release covers
These study sets do not replace a complete CDL preparation course. The collection includes Texas Commercial Rules and a separate administrative Licensing & CLP study set. It does not cover every licensing exemption or replace practical skills training. Complete the relevant official handbook sections and required training as well. Air brakes are a knowledge-test subject, not a separate CDL endorsement.
Sources: Texas Commercial Motor Vehicle Drivers Handbook (March 2026 edition), current federal rules, and Texas DPS application requirements. DPS administers CDL knowledge examinations in English effective June 1, 2026.