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?

2026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 2026 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 the tire pressure is too low, what will happen if the tire changes its shape in waves and increases in temperature due to fast movement?
Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
When driving on a long downhill road, which is the best way to control driving speed?
Which of the following is a bad habit when changing lanes?
What is the meaning of this sign?
What is the meaning of this sign?
When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
What is the meaning of this sign?
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 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.
What is the meaning of this sign?
When a wounded person is unable to get off the vehicle by himself, he should be removed from the vehicle so as to avoid a secondary injury.
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.
Which of the following method is correct to rescue an unconscious person?