How to Determine the Distance Between the Front of the Car and an Obstacle Ahead?
1 Answers
Mostly rely on the side mirrors on both sides of the vehicle to judge. The specific steps are as follows: 1. Use radar or a reversing camera: Generally, our cars are equipped with rear radar or a reversing camera to assist in position judgment. For beginners, estimating the distance between the front of the car and an obstacle can be quite inaccurate, often resulting in parking too far or too close. One method to determine the position of the front of the car is to find a reference point, and the best reference is the side mirror. 2. Estimating the distance between the front of the car and an obstacle ahead: Typically, the rear of a sedan is about 42cm from the ground. When we can see the lower edge of the front car's tire, the distance between our car and the obstacle is approximately 4.6m. If we see the lower edge of the front car's bumper, which is a vertical distance of about 45cm, the distance between our car and the obstacle is around 2.5m. If we see the upper edge of the front car's bumper, which is a vertical distance of about 65cm, the distance between our car and the obstacle is approximately 0.8-1m. When parallel parking, if we see a point slightly above the upper edge of the front car's bumper, with a vertical distance of about 70cm, we need to be very cautious, as the distance to the front car is only about 30cm. 3. Estimating the distance between the front of the car and a pedestrian: When we see a pedestrian's heels, the distance to the pedestrian is about 4m. If we see the pedestrian's knees, with a vertical distance of about 45cm, the distance to the pedestrian is around 2.5m. When we see the pedestrian's hips, with a vertical distance of about 75cm, we are very close to the pedestrian, and it's time to brake, as the distance is only about 30cm.
