set up only when vehicle is stationary ne demek?

"Set up only when vehicle is stationary" is a safety instruction or a cautionary note that means certain actions or adjustments should only be made when the vehicle is not moving or in motion. For instance, if you are trying to adjust the rearview mirrors or the seat position, it is recommended to pull over, stop the vehicle and then make the necessary adjustments. This improves safety while driving and reduces the risk of causing accidents.