Engine flameout switch, throttle cable to speed up the handles are mounted on a manipulation by the handle, the convenience of the operation.

发动机熄火开关、油门拉线、加速把手全都按装在操纵手柄上，方便了操作。

youdao

The main outer handles feel very similar to what you'd find on a bike, and they can even be shifted to a horizontal position for motorcycle racing by sliding two tabs that rest near your thumbs -- the right handle can even be used a twist throttle, but it's dependent on title support.

ENGADGET: Sony PlayStation Move Racing Wheel hands-on (video)