Will an Automatic Transmission Car Roll Back on a Slope?

[StThomas]

An automatic transmission car will not roll back on a slope. After shifting into D gear, the torque output from the hydraulic torque converter prevents the car from rolling back. The gears of an automatic transmission car are as follows: 1. P gear is the parking gear, used for long-term parking of the vehicle; 2. R gear is the reverse gear, engaged when the vehicle needs to move backward; 3. N gear is the neutral gear, engaged when the vehicle is parked for a short time without turning off the engine; 4. D gear is the drive gear, where the vehicle automatically shifts gears based on throttle opening and speed data when the gear lever is in D gear; 5. S gear is the sport mode, making the vehicle drive more sportily; 6. M gear refers to the manual mode, where gear shifting is done manually by the driver when the gear lever is in M gear; 7. L gear is the low gear.