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 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 approaching a vehicle on a narrow slope, which one of the following ways is correct?
What is the main impact of foggy weather on safe driving?
What should the driver do to follow other motor vehicles on a mountain road?
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.
Once inflammable gas causes a fire disaster, it should be put out with water in good time.
When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him to a place where air is fresh so that he will not continue to be poisoned.
When evading an emergency, except for being calm what principle should be held by drivers?
The first-aid measure to rescue a poisoned person is to _______.
What is the meaning of this sign?
Matches, sulfur and red phosphorus are _________.
What is the meaning of this sign?
When a motor vehicle temporarily stops in fog, which lamp should be turned on?