What are the differences between D档 and R档?

D档 and R档 are two different types of car gear positions. D档 is used for driving forward, while R档 is used for driving in reverse.

Here is a brief introduction to the different types of car gear positions:

1. D档 (Drive) - This gear position is used for driving forward. When the gear lever is in this position, the hydraulic system will automatically select the appropriate forward gear based on the speed and throttle signals, allowing for automatic transmission.

2. R档 (Reverse) - This gear position is used for driving in reverse. When in this position, the vehicle will move in reverse, and the transmission will be locked in order to prevent damage.

3. P档 (Parking) - This gear position is used for parking. When in this position, the parking brake will be engaged to prevent the vehicle from moving.

4. N档 (Neutral) - This gear position is used for neutral driving. When in this position, the transmission will not provide power to the wheels.

5. L档 (Low) - This gear position is used for driving in low gear. It is particularly useful on steep downhill or long descents, as it allows the engine to act as a brake, reducing the need for the driver to use the brake frequently. It is also useful in heavy traffic or on steep hills.