R - Parking. This position should only be set when the vehicle is stopped. The drive wheels are locked in this position and prevent the vehicle from moving. The handbrake must also be applied. It is prohibited to set the lever in this position when the vehicle is moving
R - Reverse. This position should only be set when the vehicle is stopped and the engine is idling.
N - Neutral position. This position should be set when starting the engine and idling it.
D - Forward movement. Normal position when driving. You can switch from position D to position L and vice versa while the car is moving.
L - Forced low gear engagement. Used on roads with large slopes.
(The text was obtained in its entirety from the specified website FORDBOOK.ru)