What is the distance between the left and right sides when reversing into the parking space?

[DelBryce]

In the Subject 2 driving test, the distance between the corner of the parking space and the vehicle body when reversing into the space is 30cm. There may be errors when observing the distance between the vehicle body and the corner of the space through the rearview mirror. Estimating the distance between the rear wheel's contact point with the ground and the corner of the space through the rearview mirror can have discrepancies from the actual distance, so it requires regular practice to account for these errors. Below are the relevant details: Points deduction: Failing to follow the prescribed route or sequence results in disqualification; the vehicle body crossing the line results in disqualification; failing to fully reverse into the space results in disqualification. Tip: Start reversing by turning the steering wheel one and a half turns to the right, and observe the top of the wheel in the right rearview mirror to ensure the right side does not cross the line when reversing into the space.

[CourtneyRose]

When I first learned how to reverse into a parking space, I was always worried about getting too close or too far from either side and hitting something. The instructor taught me to leave 30 to 50 centimeters on each side, which is about the length of an adult's arm. This provides both safety and flexibility for adjustments. During my practice, I noticed that standard parking space widths usually allow for this range. If the space is too narrow, opening the car door might cause scratches, while too much space is wasteful and inconvenient for others. For narrower spaces, aim for the 30 cm side; for wider ones, 50 cm is better. When reversing, check the rearview mirrors frequently, proceed slowly, and step out to check the actual distance if necessary to avoid miscalculations. Safe driving starts with these small habits, and with practice, it becomes second nature. The key is to adjust flexibly based on your car model and the available space, rather than rigidly sticking to specific measurements.

[OEverett]

As a seasoned driver with over 20 years of experience, I always maintain a distance of 30 to 50 centimeters on both sides when parallel parking. My experience tells me this range provides sufficient buffer against accidental movements, preventing scrapes against walls or adjacent vehicles. For instance, in urban parking spaces, leaving 40 centimeters is ideal since parking bay lines follow standard calculations. Always use the reversing camera for auxiliary observation during operation—avoid overconfidence, especially during rain or snow when visibility is poorer. Once when helping a novice reposition their car with only 20 centimeters clearance on both sides, the doors got stuck after being opened halfway. The key technique is to reverse slowly, adjust position incrementally, ensure symmetrical clearance on both sides before stopping, saving post-parking hassles. Cultivate daily habits—always glance at the surroundings before parking for added safety.

[OJayce]

From a vehicle safety perspective, maintaining a 30 to 50 cm gap on both sides when reverse parking is the most secure. Less than 30 cm increases the risk of scratches due to body sway, while exceeding 50 cm wastes space or affects traffic flow. Vehicle width directly influences the choice—compact cars can start at 30 cm, whereas large SUVs require at least 40 cm. The differing wheel trajectories during reversing necessitate extra space for the outer wheels to prevent oversteering. Slow maneuvers combined with mirror observation are crucial.