What is the L gear in an automatic transmission car?

[Vera]

Automatic transmission car's L gear is the low gear. The L gear can enable the car to use engine power for braking when going downhill on long slopes, and fully utilize the engine's torque for climbing when going uphill. Automatic transmission refers to the car's automatic gear shifting mechanism, where the control system of the automatic transmission automatically selects the appropriate gear based on the engine's speed and load while driving, replacing the driver's subjective judgment of timing and gear shifting operations. The steps to start an automatic transmission car are: 1. After sitting in the driver's seat, directly press the start button; 2. Press the brake and press the start button to ignite and start; 3. Release the foot brake and warm up the car in place; 4. Press the brake again and shift to D gear; 5. Release the handbrake and slowly release the foot brake to start.