On a typical motorcycle, what is the function of the right hand lever?

On nearly all modern motorcycles, the right hand lever operates the front brake — the most powerful brake on the motorcycle, providing approximately 70% of stopping power. The right foot pedal operates the rear brake. The left hand lever operates the clutch. The left foot pedal operates the gear shifter. This standard layout means a rider trained on one motorcycle can operate any modern motorcycle. The front brake is most important: practice using it firmly and progressively without grabbing or locking the wheel. ABS-equipped motorcycles allow firm application without lockup; non-ABS motorcycles require finesse to avoid front-wheel lockup, which causes most riders to crash.