Retractile motor-vehicle trailer hitch
Retracting tow system
Retrievable boat trailer
Reversible kingpin for trailers
Reversible push block-rear bumper and pintle hook assemblies
Reversible sway limiting blocks for a tractor hitch
Reversible trailer hitch
Rigid fifth wheel cover and carrying box
Road transport unit with demountable body
Roadworkers safety trailer
Robotic vehicle that tracks the path of a lead vehicle
Roll away trailer tongue
Roll coupling trailer hitch assembly
Roll stiffening and dampening in articulated vehicles
Rolling construction platform
Rollover prevention device
Rotary trailer sway dampener
Rotating multiple ball trailer hitch
Rowboat/canoe transport device
Rudder trailer hitch cover