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. Peng drove a heavy semi-trailer tractor with 37.7 tons of cargo (capacity 25 tons). When descending a slope on the Daguang Expressway, the tractor had a rear-end collision with Mr. Li¡¯s heavy dump truck (carrying 3.17 cubes of loess and 24 passengers in the container) occupying the emergency lane. As a result of this accident, 16 people were killed and 13 injured. What are the main illegal acts in this case?
- When driving, besides paying attention to keeping a safe distance from the vehicle in front, drivers should also be prudent when braking so as to avoid a rear-end collision caused by a vehicle behind.
- Motor vehicle drivers are allowed to make a U-turn at this intersection.
- How should the driver use vehicle lights when the motor vehicle enters this intersection?
- Motor vehicles are prohibited from driving straight or turning left in this situation.
- What should the motor vehicle driver do when the motor vehicle encounters the crosswalk in this situation?
- In the condition of low visibility, drivers should turn on the low-beam when setting off
- Which one of following ways is the safest when driving a motor vehicle on this road?
- At this moment, the driver may speed up and pass the intersection rapidly.
- When a motor vehicle turns left at this intersection the driver should change to the left lane in advance by the guide arrow.
- 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 should be given attention when setting off in this weather?
- As shown in this flash, what should the motor vehicle driver do when encounters this situation?
- When passing an intersection, vehicle motor drivers are not allowed to overtake.
- Motor vehicles should accelerate when driving into an intersection with this traffic signal.
- Which one of the following statements is correct in this situation?