This flat trailer is a special unpowered vehicle for railway, with braking system and necessary control circuits. It is applicable to the light rail line, which can be used to hold items above, and is applicable to the daily patrol maintenance and cleaning of light rail.

The gauge is 1435 or customized. The suspension system is selected according to the road conditions. It is recommended to use a special road rail dual purpose vehicle as a tractor to ensure the flexibility of use.