How to Maintain 1.5 Meters Distance Between the Right Side of the Car and the Boundary Line?
4 Answers
Keep the middle position of the bottom of the left rearview mirror aligned with the yellow line while driving. Maintain a width of 1-2 fingers between the door edge and the yellow line while driving. In the reversing test area, there is a dashed line indicating the start of reversing. You can also use this dashed line to maintain a 1.5-meter distance from the boundary line. When the vehicle is 1.5 meters away from the left boundary line, the eyes and the highest point of the steering wheel should align with the left side of the third dashed line.
As a seasoned driver with years of experience, I believe that finding the 1.5-meter distance between the right side of the car and the roadside line mainly comes from accumulated intuition. After graduating from driving school, I specifically practiced in an empty parking lot—I parked the car and had someone measure and place a small cone or chalk mark at the 1.5-meter position on the right. Sitting back in the driver’s seat, I carefully observed the rearview mirror or outside reference points, such as the cone aligning with the lower edge of the right mirror, and memorized this visual cue. Later, while driving straight, I would fine-tune my position to keep the roadside line consistently at that reference point. Over time, muscle memory naturally developed. Don’t rush to master it all at once—practice a few minutes daily in a safe area first, as maintaining this distance is crucial for urban roads to reduce the risk of vehicle-pedestrian collisions.
I started from a beginner's perspective—at first, I also found it tricky. A simple method is to get some help: park the car on a straight road, have a friend measure 1.5 meters to the right with a tape measure, and place a stone or branch as a marker. Then, while sitting in the driver's seat, I slowly observe the position of the target outside the window—for example, if it aligns with the center point of the right front wheel, that’s correct. When driving alone, choose a road with little traffic and repeat the test, checking via the rearview mirror to see if the roadside line remains stable at that visual point. I also discovered that the frame line of the right-side mirror is a great helper—once adjusted properly, if the roadside line falls into a specific area within the frame, it roughly indicates the distance is right. With a few days of practice, you’ll get the hang of it, avoiding mistakes caused by nervousness. On narrow roads, this technique helps keep the car away from blind spots, enhancing safety.
I think technical means can simplify this matter. Although some cars have radar or panoramic imaging to display distances, in daily use I directly employ a DIY method: using a tape measure to mark a 1.5-meter interval from the right front to the rear of the car, then sticking small dot stickers on the corresponding positions of the car body. While driving, I align those sticker dots with the roadside line by looking out the window, achieving direct visual positioning. After practicing a few times in an empty space and getting familiar with the sight angle—like when the right door handle height aligns with the target point—the margin of error is minimal. This method saves time and suits the fast pace of modern urban life, and it can also be extended to other car body distance estimations.
