Abstract: An elevated roadway for autonomous vehicles may include a pylon extending vertically from a ground anchor and comprising a metal tube defining a central cavity and a concrete column within the central cavity. The elevated roadway further includes a bracket coupled to the pylon and comprising a mounting plate secured to the pylon and a cantilevered road support member extending from the mounting plate. The elevated roadway may further include a cantilevered road section coupled to the pylon via the cantilevered road support member and comprising a joist structure structurally coupled to the cantilevered road support member, a road member above the joist structure and supported by the joist structure, and first and second side barriers along first and second sides of the road member, respectively. The road member may be adapted to receive a four-wheeled roadway vehicle.

Abstract: A gutter duct structure for a concrete roadway mainly comprises a plurality of duct elements each is formed as a hollow cone shaped strut with an opening at each end thereof, and a plurality of seal elements engageable respectively with a top openings of the duct elements. During constructing the roadway, the duct elements are laid on the ground with the bottom end of the duct elements buried in a water seeping layer. The seal elements may be removed rapidly after a top surface layer of the roadway is laid and finished thereby to channel water on the top surface layer to the water seeping layer for draining, and thus may speed up construction of the roadway and reduce costs, and allows rainfall seeping into earth for recycling to conform to environmental conservation and protection requirements.