Automatic transmission cars typically have 6-7 gear positions, including D (Drive), P (Park), R (Reverse), N (Neutral), S (Sport), L (Low), and M (Manual). However, M (Manual) is specific to semi-automatic transmission vehicles and may not be available in every automatic car. Here is an explanation of each gear position:
1：D - Drive: The most commonly used gear for normal forward driving. Shifting up and down is automatically controlled by the vehicle's transmission. Variants like D1 (or L), D2, and D3 are similar to manually selecting gears 1 and 2, 3 and 4, and 5 and 6, respectively.
2：L - Low: When driving downhill, shifting to Low helps reduce the need for frequent braking. When climbing uphill, using Low provides more power for uphill driving.
3：R - Reverse: This gear is used for backing up the vehicle. It can only be engaged when the vehicle is at a complete stop. Some models have a locking button that must be pressed to shift to Reverse.
4：N - Neutral: This gear is used for temporary stops, such as waiting at a traffic light. The handbrake should be applied while in Neutral. Do not use Neutral while driving downhill.
5：S - Sport: The main difference between D and S is that S uses different shift programs. You can switch between D and S at any time without any negative impact on the transmission. S mode is suitable for overtaking but not recommended for high-speed driving.
6：M - Manual: Manual mode is specific to semi-automatic transmission vehicles and allows the driver to manually shift gears. Use the "+" to upshift and "-" to downshift.
7：P - Park: When the vehicle is stationary, engaging Park acts as a brake to prevent the vehicle from moving. Some models have electronic parking brakes that serve the same purpose.
Lock Button: This button is used when engaging P (Park) or R (Reverse) and when leaving P. It locks the gear to prevent any reverse impact on the transmission. Press the lock button when shifting to these positions, and release it when changing gears.
