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

When a motor vehicle temporarily stops at night, which lamp should be turned on?
When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?
When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
When a motor vehicle stops in snow, which lamp should be turned on?
What is the meaning of this sign?
Which lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
How to ensure motor vehicles have sufficient power when driving uphill?
What is the meaning of this sign?
What is the meaning of this sign?
When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him/her to a place with fresh air so that he/she will not continue to be poisoned.
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?