What are the evaluation criteria for straight-line driving in Subject 3?
2 Answers
Subject 3 straight-line driving evaluation criteria are as follows: Unstable steering wheel control: During driving, if the steering wheel is controlled unstably and the vehicle cannot maintain a straight-line motion state, it will be judged as unqualified. Not observing through the rearview mirror: If you do not observe the traffic conditions behind on the road through the rearview mirror for more than about 20 seconds, points will be deducted. Not taking deceleration measures: If you do not take deceleration measures when encountering the braking of the vehicle in front, you will also be judged as unqualified. Not detecting road obstacles: If you do not detect road obstacles in time and do not take deceleration measures promptly, points will be deducted. Lack of understanding of the vehicle's driving speed will also result in point deductions.
I used to be most afraid of the straight-line driving during my driving test (科目三), but later realized the key lies in minor adjustments. The standard requires the steering wheel to sway no more than 5 degrees left or right, and the car must not deviate more than 30 centimeters. I remember during one practice session, I was fixated on the steering wheel and ended up crossing the line, prompting my instructor to yell, 'Look at the far end of the lane!' The speed should be steady at around 30 km/h—too slow and the computer might judge it as stalling, too fast and the car tends to drift. The trickiest part is maintaining a straight line over a 100-meter distance; excessive body sway means an instant fail. The test car has sensors that beep an alarm if you turn the wheel too much, so it's advisable to rent the test car for a couple of practice rounds beforehand to get a feel for it.
