Most of our electric bikes and scooters are throttle controlled - meaning you use a throttle to control power and speed. To get started, simply twist the throttle to accelerate and hold it to maintain speed. Other e-bikes are classified as 'pedal assist' and power is applied automatically. Once you start pedaling, a torque sensor picks up your movement and power integrates seamlessly while you ride. Just pedal and go. Once you use the brakes or quit pedaling, the power is deactivated and you need to pedal again (lightly) to re-activate pedal assistance.For people who prefer full control, a throttle is a nice option since it operates just like a motorcycle. But if you're looking for simplified operation, pedal assist is great because it does all the work automatically. Keep in mind: you have to pedal (lightly) for power to be applied with pedal assist. With a throttle, no pedaling is required at all. Please Note: Most of our e-bike models include pedal assist (PAS) and a throttle.