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.
本考試的官方手冊僅以English出版，因此這裡的題目為英文。
1,686道題
練習General 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
考試會考什麼
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.
常見問題
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.
最佳考試成績1,686 道題 · 每次考試都不一樣
正式考試不提供中文版本，因此這份模擬考試與正式考試一樣採用英文。
以上為正式考試的規定，依據 Texas DPS。 題目出自Texas Commercial Motor Vehicle Drivers Handbook March 2026，核對日期：2026年11月4日。
本考試的官方手冊僅以English出版，因此這裡的題目為英文。