How to Most Accurately Maintain 30 cm on an Uphill Slope?
3 Answers
To maintain 30 cm on an uphill slope, first divide the front of the car into three equal parts visually. Then, pull over to the right side. When the right one-third of the car's front aligns with the sideline, the right wheels are exactly 30 cm away from the sideline. Below is an introduction to the driving test: 1. Hill Start: Hill start is a common part of the driving test (Subject 2), which involves starting a vehicle parked on a steep slope. When learning hill start techniques, students should first pull the handbrake, press the accelerator to 2000 rpm, then release the clutch until it reaches 1000 rpm, release the handbrake, slightly release the clutch, and add a bit more throttle. 2. Right-angle Turn: Maintain a slow speed. When the front of the car almost covers the yellow line, quickly turn the steering wheel. During the turn, slightly raise the clutch to ensure the car doesn't stop.
When parking on an uphill slope, especially for the precise 30 cm distance, I usually find a fixed reference point like a roadside utility pole or the edge of the sidewalk, as the eye's perspective can easily be off. I prefer to lightly press the brake and slowly reverse, letting the car slide down at a steady speed while watching the target position in the rearview mirror. When the rear wheel is about 15 cm away from the reference point, I stop—this spacing plus the car's length adds up to roughly 30 cm. After practicing a few times, you'll get the hang of it. Just remember to keep your hands steady and avoid releasing the brake too quickly, as this can cause the car to roll. Adjusting the rearview mirror slightly lower also helps. Different car types require different techniques—I mostly use this method for sedans, but for SUVs with higher ground clearance, I leave a bit more margin in advance. Safety always comes first.
To park accurately 30 cm uphill, I simply activate the vehicle's built-in assistive features, such as the Hill Start Assist system, which automatically holds the car to prevent rolling back. On level ground, I set the target distance point, use the onboard camera or parking sensors to position the car, and make gradual adjustments—the more frequent the sensor beeps, the closer I am. Modern cars are so convenient. If the car lacks these features, I use a smartphone app as a backup, similar to a measuring tool, placing it on the driver's seat and operating it via the screen—simple and effective. The key is to lightly press the accelerator to control speed, avoiding sudden acceleration, and take it slow to accurately stop at the 30 cm mark.
