How is crossing the line determined in reverse parking?

[VanJaxon]

During reverse parking, improper body adjustment and turning timing can cause the wheels to cross the solid lines on both sides. By observing the right rearview mirror, maintain a distance of approximately 30cm between the car body and the corner of the parking space.

[DelLila]

As someone who frequently teaches beginners at driving schools, when judging whether I've crossed the line during reverse parking, I mainly observe whether the wheels touch the edge of the parking space line. Simply put, during the reversing process, I check the relative position between the tires and the line through the rearview mirror; once the tire touches or crosses the line, it's considered crossing. In practice, many people easily overlook blind spots or changes in the car's angle, leading to misjudgment. I recommend practicing adjusting the rearview mirror's angle more to ensure clear visibility of the corners. Additionally, it's harder to judge in bad weather or poor lighting, so it's important to develop the habit of reversing slowly in parking lots. Crossing the line not only affects performance but may also cause scratches to neighboring vehicles, leading to trouble.