1 (also labelled "L"): Restricts the transmission to 1st gear only, often known as a "very low equipment". This is helpful when a significant torque is required at the wheels (such as, when accelerating up a steep incline); on the other hand use at greater speeds can operate the engine https://claytonnplfa.isblog.net/5-simple-techniques-for-gearbox-auto-51292327