1 (also labelled "L"): Restricts the transmission to 1st equipment only, often known as a "low gear". This is helpful when a substantial torque is necessary in the wheels (for example, when accelerating up a steep incline); nonetheless use at bigger speeds can run the motor at an abnormal velocity, https://marcotrlgz.onzeblog.com/34180073/the-smart-trick-of-gearbox-auto-that-no-one-is-discussing