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
2025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 2025 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
- When disembarking, what should be done by drivers in order to keep safe?
- What should the driver do if he wants to turn left at this intersection?
- What should the driver pay attention to when the motor vehicle passes a school?
- After setting off from a roadside, motor vehicle drivers should watch both sides of the road, turn left and drive into the normal lane slowly.
- Mr. Zhou drove a light van (with 22 passengers) on the Bingcha Highway. At the spot of 79 kilometers mark by 150 meters of the highway, the van fell into the valley on one side, killing 12 people and injuring 10. What is the main illegal act committed by Mr. Zhou?
- When temporarily parking on a raining day, what kind of lamp should the driver turn on?
- What should be done to keep safe when a motor vehicle driver is overtaking in this condition?
- How should lamps be used when motor vehicle drivers pass through a two-way tunnel?
- How many kinds of law-breaking acts are displayed in flash 6?
- Which one of following ways is the safest when driving a motor vehicle on this road?
- What should be checked before driving?
- Which one of the following is the safest way when driving a motor vehicle on this road?
- Motor vehicle drivers may borrow a special lane for other vehicle types, if one exists, to overtake.
- The red car is allowed to drive on this lane.
- Motor vehicle drivers may make a U-turn in this area as long as it will not affect the passing of pedestrians.
- Under the circumstances shown in the flash, what should be done by the vehicle in front?