21. One day, Mr. Yang drove a large bus with 57 passengers (bus capacity 55 people) from 7 pm to 1 am the following morning. At the spot of 3008 kilometers mark by 110 meters on the No. 050 National Road in Jin Chengjiang District, the bus had a malignant traffic accident caused by front left tire burst, killing 12 people and injuring 22. What is the main illegal act committed by Mr. Yang?
A. Fatigued driving
B. Carrying more passengers than permitted
C. Speeding
D. Misoperation
Answer：AB
2026年科目四英文版题库共700题，你可以免费查看前200题，完整版题库请添加微信购买：
The English version of the 2026 subject 4 question bank has a total of 700 questions. You can view the top 200 questions for free. Please add WeChat to purchase the complete version of the question bank.
Subject 4 test questions
- Mr. Zhao (with an A2 driving license) drove a large sleeper coach on the No. 219 National Road in Yecheng County. When passing a curve at the spot of 226 kilometers mark by 215 meters on the road, the coach fell into the ravine on one side, killing16 people and injuring 26. What is the main illegal act committed by Mr. Zhao?
- Motor vehicles should stop and yield rapidly when encountering this situation at a bus station.
- What should be done to keep safe when a motor vehicle driver is overtaking in this condition?
- What does this sign on the fly-over junction indicate?
- Under such circumstances, the motor vehicle driver should voluntarily reduce speed and let the vehicle behind overtake.
- Having driven a medium passenger vehicle (carrying 27 passengers) to the southern end of Qianling Village of Sidu Town, Mr. Xu drove upslope but the vehicle slid backward and dropped from an 80-meter cliff, killing 11 people and injuring 7. Which of the following law-breaking acts did Mr. Xu commit?
- What is the meaning of the sign on the right?
- It is safest for a motor vehicle driver to overtake the vehicle in front from its righthand on this kind of road.
- When passing an intersection, vehicle motor drivers are not allowed to overtake.
- The sign on the right warns of a continuous downhill section ahead.
- Mr. Qian drove a large sleeper coach with 45 passengers (capacity 40 people) at a speed of more than 40 kilometers per hour. On a long slope with sharp curves in Basu County, the coach fell into a 100-meter-deep valley, killing 17 people and injuring 20. What is the main illegal act committed by Mr. Qian?
- What caused this drivers death in an accident?
- What should the driver do when he sees this sign on the road?
- Motor vehicles are not permitted to change lanes in this position.
- When driving onto the left lane, motor vehicle drivers are allowed to make a U-turn.
- As shown in the flash, what should the driver do when the motor vehicle encounters this situation?