Roadway infrastructure for autonomous vehicles

1. An elevated roadway for autonomous vehicles, comprising:

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;

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; and

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.

2. The elevated roadway of claim 1 , wherein the concrete column comprises steel-reinforced concrete.

3. The elevated roadway of claim 1 , wherein either the metal tube or the concrete column is capable of fully supporting a weight of the cantilevered road section.

4. The elevated roadway of claim 1 , wherein:

the cantilevered road section is a first cantilevered road section;

the first cantilevered road section extends from the bracket in a first direction; and

the elevated roadway further comprises a second cantilevered road section extending from the bracket in a second direction opposite the first direction.

5. The elevated roadway of claim 1 , wherein the road member is a unitary concrete structure defining:

a road surface;

at least a portion of the first side barrier; and

at least a portion of the second side barrier.

6. The elevated roadway of claim 1 , wherein a centerline of the road member is offset relative to a centerline of the joist structure.

7. The elevated roadway of claim 1 , wherein the road member is adapted to receive a four-wheeled roadway vehicle.

8. The elevated roadway of claim 1 , wherein the mounting plate is secured to the pylon via anchors embedded in the concrete column.

9. The elevated roadway of claim 1 , wherein a top surface of the road member is nonparallel to a plane defined by a top of the joist structure.

10. The elevated roadway of claim 1 , wherein the joist structure comprises a plurality of parallel joists.

11. The elevated roadway of claim 10 , wherein the plurality of parallel joists comprises four parallel joists.

12. The elevated roadway of claim 11 , wherein:

the cantilevered road section further comprises:

a metal form coupled to the joist structure; and

a concrete road support formed in the metal form; and

the road member and the concrete road support are parts of a monolithic structure.

13. An elevated roadway for autonomous vehicles, comprising:

a plurality of pylons, each respective pylon of the plurality of pylons extending vertically from a respective ground anchor; and

a cantilevered roadway supported by the plurality of pylons and defining, along at least a portion of the cantilevered roadway:

a first side extending parallel to a direction of vehicular travel; and

a second side extending parallel to the direction of vehicular travel, wherein each pylon of the plurality of pylons is positioned along the first side of the portion of the cantilevered roadway.

14. The elevated roadway of claim 13 , wherein:

the cantilevered roadway is a first cantilevered roadway; and

the elevated roadway further comprises a second cantilevered roadway supported by the plurality of pylons and positioned vertically above the first cantilevered roadway.

15. The elevated roadway of claim 13 , wherein the pylons are set apart from one another by 100 feet or less.

16. The elevated roadway of claim 13 , wherein the cantilevered roadway comprises a plurality of road sections joined end-to-end.

17. An elevated roadway for autonomous vehicles, comprising:

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;

a bracket coupled to the pylon and comprising:

a mounting plate secured to the pylon;

a first cantilevered road support member extending from the mounting plate in a first direction;

a second cantilevered road support member extending from the mounting plate in a second direction opposite the first direction;

a first cantilevered road section coupled to the pylon via the first cantilevered road support member and comprising:

a first joist structure structurally coupled to the first cantilevered road support member; and

a first road member above the first joist structure and supported by the first joist structure; and

a second cantilevered road section coupled to the pylon via the second cantilevered road support member and comprising:

a second joist structure structurally coupled to the second cantilevered road support member; and

a second road member above the second joist structure and supported by the second joist structure.

18. The elevated roadway of claim 11 , wherein the mounting plate is secured to the pylon via anchors embedded in the concrete column.

19. The elevated roadway of claim 17 , wherein:

the mounting plate is a first mounting plate; and

the elevated roadway further comprises:

a second mounting plate secured to the pylon below the first mounting plate;

a third cantilevered road support member extending from the second mounting plate in the first direction; and

a fourth cantilevered road support member extending from the second mounting plate in the second direction.

20. The elevated roadway of claim 11 , wherein the first cantilevered road section is positioned over a pedestrian walkway.