Bajaj RE is a model of Tuk Tuk (also known as Auto Rickshaw) which is very popular in many Asian and African countries. A Tuk Tuk is a three-wheeled vehicle commonly used for short-distance transportation, especially in congested urban areas. They are usually powered by a motorcycle engine and have a small cab and passenger seat in the back.

Motorcycle one-way device refers to an important component on a motorcycle, also known as starter gear, starter gear or starter clutch. It is one of the key components in starting a motorcycle engine. The function of a motorcycle one-way converter is to change the rotation direction of the starter to the rotation direction of the engine. When the rider presses the starter button, the starter turns and transfers power to the one-way unit. The mechanical structure inside the one-way device allows power to be transmitted in only one direction when the starter rotates, but not when the engine rotates. In this way, the starter helps the engine start but does not put any load on the engine when it is running normally.

The advantage of using a motorcycle one-way device is that it can reduce the resistance of the starter during normal engine operation, increase the service life of the starter and reduce energy loss. Additionally, a one-way stopper prevents engine damage from the starter's continued rotation.

In short, a motorcycle one-way device is a device that helps transmit power between the starter and the engine. It plays an important role in the starting process of a motorcycle.