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

Which of the following measures is incorrect when a motor vehicle stops?
When evading an emergency, except for being calm what principle should be held by drivers?
What is the meaning of this sign?
What is the meaning of this sign?
When there is bleeding at the bone fracture of a wounded person, the first thing to do is to fix the wounded part in position, then stop the bleeding and dress the wound.
When an erosive material catches fire, it should not be put out with water cannon.
What is the meaning of this sign?
How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
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.
What is the meaning of this sign?
When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
When rescuing a wounded person suffering spinal fracture, it is necessary to ___________.
What is the meaning of this sign?
Which of the following method is correct to rescue an unconscious person?