How to Find the 30cm Mark for Meeting Oncoming Vehicles in Subject 3?
4 Answers
When you hear the parking instruction, turn on the signal light, observe the traffic situation, and after confirming it's safe, steer the wheel to the right. When the raised part of the wiper is about to coincide with the right line, immediately straighten the direction. When the raised part coincides with the road edge line, the distance is exactly 30 centimeters. When the front one-third of the car is about to coincide with the right line, the distance is exactly 30 centimeters. Different vehicles may vary, so familiarize yourself with the test vehicle in advance. Adjust the rearview mirror before getting in the car. When parking, observe the position in the right rearview mirror. When the front and rear door handles coincide with the road edge line, the distance is exactly 30 centimeters.
I remember when I was taking the driving test for Subject Three, I was particularly nervous about the oncoming vehicle section—how to gauge that 30-centimeter distance. My instructor taught me a little trick: when parking, look at the raised part in the middle of the wiper blade in front of the driver's seat and align it with the white line on the roadside, which roughly ensures a 30-centimeter distance. Back then, I practiced driving every day, slowly maneuvering in the neighborhood and testing this alignment with the roadside line. At first, I kept making mistakes—either too far or too close—but later I realized that the speed must be slow, reduced to below 10 km/h, to allow time for adjustments. On the test day, I steadied my breathing, repeatedly checked this reference point, and lightly applied the brakes to control my speed, and I passed smoothly. The key is really to practice more to develop a feel for it. Find an open space and try multiple times. Don’t just focus on the test requirements; also think about the safe distance awareness needed for everyday driving. If you don’t pass the first time, don’t get discouraged—just try again a few more times.
With over a decade of driving experience, I find the most practical method for maintaining a 30 cm distance during the oncoming vehicle section of the driving test (Subject 3) is to use reference points inside the car. For example, when sitting upright while driving, align your body's central axis with a roadside marker or use certain parts of the car like the door handle to gauge the distance. Every time I coach someone for the test, I emphasize the importance of moving slowly at around 10 km/h, keeping a close eye on the rearview mirror to monitor the wheel's position relative to the curb. I recommend dedicating time to simulated practice in safe areas like test training grounds, repeatedly trying until you get it right. Remember, mastering the 30 cm distance isn't achieved overnight—it requires developing spatial awareness. This skill isn't just useful for passing the test; it also helps avoid scratches when navigating narrow roads with oncoming traffic in the future. Safe driving relies on accumulating and perfecting these small details through practice.
In my opinion, the shortcut to finding the 30 cm mark during the oncoming vehicle test in Subject 3 is to align the lower edge of the front window with the boundary of the curb, while steadily controlling the speed—keeping it around 10 km/h is sufficient. That's exactly how I operated during my test, and I passed it quite easily.
