
When the eye, a specific point on the car body, and a marker on the ground form a straight line, the position of the car can be determined. Look at the position of the red dot, a node on the windshield wiper, and align it with the line on the road surface on the right side of the car, maintaining a distance of approximately 30 cm from the car. Two parallel straight lines appear nearly parallel under weak perspective. If the car body in the rearview mirror is parallel to the line on the ground, then they are actually parallel. Set a reference target position, observe the actual feedback position, compare, and execute control.

The 'three-point alignment' is crucial in the Subject 2 driving test. When I first started learning to drive, my instructor taught me this technique to assist with reverse parking. For reference points, it's often the corner of the garage seen in the left rearview mirror, a mark on the car body (such as the edge of the steering wheel), and a reference line on the ground. When these three points align in a straight line, I turn the steering wheel. With more practice, you'll become proficient, but remember that everyone's sitting posture is different, so the points may vary slightly—adjust according to your own car. Don't just rely on theory; get behind the wheel and practice several times to understand how to use it. Before the test, I simulated it several times to find the perfect timing.

As someone who often teaches beginners to drive, the 'three-point alignment' is one of the key techniques for Subject 2. Choose three reference points: usually a fixed point on the car, a ground marker, and a target point. Operate when they align. I emphasize that practice is essential to develop the habit. For example, when reversing into a parking space, inaccurate point alignment can easily lead to crossing the line, so it's recommended that students adjust the seat position before getting in the car to ensure consistent visibility. This technique is also useful in actual driving, but the test is stricter.

I passed my driving test (Subject 2) entirely by relying on the three-point alignment method. During the reverse parking section, I would immediately turn the steering wheel when the garage boundary line, a specific point on the car body, and the steering wheel aligned into one straight line in the left rearview mirror. Actually, this technique isn't just for exams - I occasionally use it when parking in narrow spaces during regular driving too. During practice, it's good to experiment with different reference points to find what works best for you. The key is not to panic - make sure your eyes are accurately focused before executing the maneuver.


