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?

2025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 2025 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

The first-aid measure to rescue a poisoned person is to _______.
When a motor vehicle encounters an accident, the driver should pay attention to whether there is fuel leakage, pipeline rupture, so as avoid accidents.
What is the meaning of this sign?
When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
When a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?
What should motor vehicle drivers do when parking temporarily on a rainy day?
What is the meaning of this sign?
When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
When following other vehicles on a foggy day, what should the driver do?
When rescuing the injured, it is necessary to ________.
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?
Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.