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 in fog, which lamp should be turned on?
When a wounded person suffering bone fracture in the thigh, shank and spine, it is necessary to keep the fracture in position and refrain to move the wounded person.
When rescuing a wounded person in an emergency, it is necessary to firstly stop the bleeding by compression before other methods are taken according to the conditions of bleeding.
When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
What is the meaning of this sign?
When approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
How should lamps be used by the motor vehicle driver who follows a vehicle on a road section at night where he street light condition is good?
Which of the following is a bad habit when changing lanes?
The wrong method to rescue a poisoned person in a traffic accident is to ______.
When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
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?
When an erosive material catches fire, it should not be put out with water cannon.
When driving on road sections where safe sight distance is affected, such as the top of a ramp, what should drivers do to ensure safety?
What is the meaning of this sign?
What is the meaning of this sign?