Texas · Texas DPS
Commercial driver license (CDL) knowledge tests
Commercial license, Class A or B, from the Department of Public Safety. Texas adds its own Texas Commercial Rules exam to the federal tests.
Sổ tay chính thức của bài thi này chỉ được phát hành bằng English, nên các câu hỏi ở đây bằng tiếng Anh.
1,686câu hỏi
Luyện tậpGeneral knowledge0 / 684
- Licenses, tests and disqualifications0 / 83
- Vehicle inspection0 / 67
- Control, shifting and seeing0 / 54
- Communicating, speed and space0 / 85
- Seeing hazards, distraction and road rage0 / 78
- Night, fog, winter and hot weather0 / 72
- Railroad crossings and mountain driving0 / 53
- Emergencies, ABS and skids0 / 68
- Accidents, fires, alcohol and hazmat rules0 / 75
- Transporting cargo0 / 49
Combination vehicles0 / 146
School bus0 / 142
Hazardous materials0 / 236
Kỳ thi sẽ như thế nào
A Texas commercial driver license takes several knowledge exams, given in a fixed order: Texas Commercial Rules first, then General Knowledge, and then each endorsement you need, such as combination vehicles, air brakes, doubles and triples, passenger, school bus, tank and hazardous materials. The Texas Commercial Motor Vehicle Drivers Handbook asks for 80 percent on each one. After a failed exam the application stays open for 90 days, and three failed attempts void it.
The questions here are written from that handbook, March 2026 edition, for every exam on the list, including section 14 on the special requirements for Texas commercial vehicles: papers and permits, equipment, and the size and weight limits. Every answer links to its page in the handbook. Each exam has its own practice test, so you can prepare for exactly the endorsements you need.
Start with Texas Commercial Rules and General Knowledge, which everyone takes, then add the endorsements. The hazardous materials endorsement also needs a background check: the practice here covers the knowledge part.
Câu hỏi thường gặp
What is the Texas Commercial Rules test?
A knowledge exam only Texas gives, taken first. It covers section 14 of the handbook: the papers, permits and equipment a commercial vehicle in Texas needs, and the state limits on size and weight.
What score do you need on the Texas CDL knowledge tests?
Eighty percent or better on each exam, per the Texas Commercial Motor Vehicle Drivers Handbook. The practice exams here use the same bar.
How many tries do I get?
The application stays open for 90 days after a failed exam. After three failed attempts, or when the 90 days run out, you apply again with a new fee.
Điểm thi cao nhất1,686 câu hỏi · Mỗi lần thi một đề khác
Bài thi thật không có bằng Tiếng Việt, nên bài thi thử này bằng tiếng Anh, giống như bài thi thật.
Trong bài thi thật, theo Texas DPS. Câu hỏi lấy từ Texas Commercial Motor Vehicle Drivers Handbook March 2026, đã đối chiếu vào 4 thg 11, 2026.
Sổ tay chính thức của bài thi này chỉ được phát hành bằng English, nên các câu hỏi ở đây bằng tiếng Anh.