What is the method to find the right 30 cm?
2 Answers
When starting on a semi-slope to find the right 30 cm, there are mainly three methods. Below is a detailed introduction to these three methods: 1. Use the wiper: For cars equipped with a wiper, adjust your sitting position and observe the root of the wiper. When the point at the root of the wiper falls exactly on the extension line of the right edge, the distance between the right wheel and the edge line is 30 cm. 2. Use a reference point: Use the central disc on the car hood as a reference. Take a vertical tangent line five fingers wide from its right side, and align the leftmost edge of this five-finger width with the inner side of the white line. By driving in this manner, the right wheel will be within 30 cm of the edge line. 3. Use the rearview mirror: Observe the small rearview mirror on the car's front. When the edge line touches the car body, the distance is correct.
Finding the right 30 cm, I relied on this method when learning to drive. Generally speaking, sitting in the driver's seat, look at the line extending from the center of the steering wheel and align it to a reference point on the right side, such as the curb or parking line, to roughly position the 30 cm distance. When I practice in the parking lot, I always drive at low speed first, observe the gap between the edge of the vehicle and the ground in the right rearview mirror, and adjust it to just about the width of a palm. After practicing a few times, muscle memory will gradually develop. In fact, this technique is not only useful for parking but also helps avoid scratches when turning on narrow roads, especially on rainy days when visibility is poor—this basic skill has been a great help. Remember not to stare straight ahead; use your peripheral vision to scan the vehicle's movement and maintain distributed attention to avoid tension.
