How to Find the 30 cm Margin in Subject 2?

2 Answers
SanJoanna
07/29/25 2:27am
When approaching the parking spot, try to keep the distance within 30 cm. If the distance is too close, you may run over the inner boundary line of the side parking space; if it's too far, you won't be able to park properly. After stopping, if the distance between the car body and the roadside line is more than 30 cm but less than 50 cm, you will lose 10 points; if it exceeds 50 cm, you will fail immediately. After hearing the instruction, turn on the right turn signal, observe, slow down, and determine the stopping point. Then turn the steering wheel to the right, but the steering angle should not be too large.
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DiHarmony
08/12/25 12:34pm
When teaching students about finding the 30 cm margin in driving school, I always emphasize several key points. First, make good use of the wiper reference—aligning the raised part of the wiper or the right wiper node with the edge line usually gives you about 30 cm, which is the most common method. Second, observe the engine hood—aligning the right one-third of the hood with the line is also accurate, though slight seat adjustments may be needed for different heights. Third, during slope positioning, check the distance between the car body and the line through the right rearview mirror; a finger’s width is roughly 30 cm. Don’t just focus on one point—combine multiple references. Keep the steering wheel steady and avoid large swings, as crossing the line will undo all your efforts. It might feel difficult at first, but after practicing a dozen times, muscle memory will kick in. You can also practice this skill during regular parking, such as keeping a fist’s distance between the wheel and the curb in the rearview mirror when parking by the roadside—that’s about 30 cm.
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