What do the gear letters P, R, N, D, M stand for in a car?
1 Answers
The gear letters P, R, N, D, M in a car represent: P for Parking gear, R for Reverse gear, N for Neutral gear, D for Drive gear, and M for Manual mode. Automatic transmission typically refers to the car's automatic gear-shifting mechanism, where the control system of the automatic transmission selects the appropriate gear based on the engine's speed and load during driving, replacing the driver's subjective judgment of timing and gear-shifting operations. The automatic transmission uses planetary gear mechanisms for shifting, which can automatically change gears based on the degree of the accelerator pedal and changes in vehicle speed, while the driver only needs to control the speed by operating the accelerator pedal.