Why does an automatic car roll backward when starting on a slope?
1 Answers
If the car is not given throttle, the driver should apply throttle to climb the slope. Automatic cars may experience rolling backward when starting on a slope. If only the D gear is engaged without applying throttle while on a slope, the idle speed may be insufficient to move the vehicle up the slope, potentially causing the engine to stall. Below are some techniques for starting on a slope: 1. Whether during practice or a simulated test, the first step after getting in the car is to fasten the seatbelt, then adjust the seat position, backrest angle, and rearview mirror until comfortable and able to observe the surroundings clearly. Developing good habits ensures smoother performance during tests. 2. After preparations are complete, begin the slope start. Press the clutch pedal fully with the left foot, shift to first gear, release the handbrake, and slowly release the clutch to start the car while steering straight. It's best to align the car properly at this stage, as adjusting on the slope is difficult and often leads to deviation. 3. Stopping during a slope start requires precise alignment with the edge line—only within 30CM is considered acceptable. Slightly steer to the right, so try to straighten the car in step two. 4. Stay focused while climbing, maintain a slow speed, and steer steadily. As the car approaches the slope stop line, control speed using the clutch and brake. When the eye, vehicle hood, and yellow marker align, brake at about 50CM from the stop line.
