This is a 1:35 model of a Ponton bridge ramp module. The ramp is used at both ends of the ponton bridge. Ponton bridges are used by US Army Engineer Corps to cross rivers where no brigdes are. the modules are transported on a HEMMT Truck which uses PLS and CBT ( http://www.3dvia.com/alfredix/models/91E1F48799ABBD8F ).