123. Which of the following is a bad habit when changing lanes?

A. Turning on the indicator in advance

B. Observing closely before changing a lane

C. Change lanes at will

D. Not obstructing the passing of other normally moving vehicles

Answer：C

Previous question: 122. When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?

Next question: 124. What influence does smoking have upon driving?

2026年摩托车科目四英文版题库共345题，你可以免费查看前50题，完整版题库请添加微信购买：

The English version of the 2026 motorcycle subject 4 question bank has a total of 345 questions. You can view the top 50 questions for free. Please add WeChat to purchase the complete version of the question bank.

科目四试题

What is the meaning of this sign?
When using splints, sticks or tree branches to keep the unexposed bones in position, it is necessary that these things should exceed the upper and lower joints of the wound.
When driving on a long downhill road, which is the best way to control the speed?
What is the meaning of this sign?
At the scene of a traffic accident, once there is a leakage of toxic and harmful substances, people must be evacuated at the first time and alarmed immediately.
When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
What should be checked before driving?
When a motor vehicle temporarily stops at night, which lamp should be turned on?
Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
What is the meaning of this sign?
When following other vehicles on a foggy day, what should the driver do?
Which of the following is a bad habit when changing lanes?
What is the meaning of this sign?
When the tire pressure is too low, what will happen if the tire changes its shape in waves and increases in temperature due to fast movement?
What is the meaning of this sign?
Which of the following is an inflammable solid material?