How to Judge the Distance Between the Right Side of the Car and Obstacles?
2 Answers
Methods to judge the distance between the right side of the car and obstacles: 1. Height: Mainly estimated based on the comparison of the blocked height. 2. Distance from the roadside: Determine the position of the roadside in the windshield (the left wheel is 10-15cm to the right from the left pillar of the windshield; the right wheel is 5-10cm to the left from the center line of the windshield); the distance from the roadside can be seen from the rearview mirror. 3. Right wheel position: Determine the position of the right wheel (middle of the front of the car or right wiper): relative to the ground at one-third of the right side of the front cover. 4. Three-point alignment: When the eyes, the front edge of the car hood, and the point where the obstacle touches the ground are aligned, the obstacle is approximately 1.5 to 2 meters away from the front of the car.
When judging the distance to obstacles on the right side while driving, I mainly rely on familiarity with the rearview mirrors and reference points on my car body. As an experienced city driver, I adjust the right rearview mirror to just barely see the roadside curb and obstacles beside the car. When approaching a target, like a parking pole, I observe its position in the mirror—if it moves toward the edge of the mirror or starts to appear smaller and blurrier, it means I’m getting too close and need to make slight adjustments to the left. I also use the car body as a guide: when the right headlight or wiper node aligns with the obstacle, it’s time to be cautious because the wheels might be about to hit. I usually recommend practicing in an open area, using a cardboard box as an obstacle, and repeatedly driving slowly to get a feel for distance changes. Keep the speed low to allow enough reaction time and avoid accidents in narrow alleys or parking lots. Don’t just focus on the mirrors—occasionally glance quickly over your shoulder to check blind spots, and combine that with sensing the car’s movement and position for better accuracy.
