| 11386815  | Bypass merge lanes | Feb 09, 17 | Jul 12, 22 | Not available | 
| 10995456  | Modular roundabout system with interconnectable boards | Sep 13, 19 | May 04, 21 | ZKxKZ, LLC | 
| 10975528  | Modular block system for roundabouts | Jul 27, 20 | Apr 13, 21 | ZKxKX, LLC | 
| 10954638  | Flow boulevard; continuous flowing traffic on interrupted urban streets | Sep 16, 13 | Mar 23, 21 | Not available | 
| 10724181  | Modular block system for roundabouts | Sep 09, 16 | Jul 28, 20 | ZKxKZ, LLC | 
| 9702094  | Method and apparatus for forming tunnels and tunnels formed thereby | Jan 24, 14 | Jul 11, 17 | Not available | 
| 9605392  | Load-supporting surface with redundant interfacing gap seal members and related methods | Jul 31, 16 | Mar 28, 17 | NEWPARK MATS & INTEGRATED SERVICES LLC | 
| 9441331  | Stacked city road | Dec 21, 12 | Sep 13, 16 | Not available | 
| 9267306  | Multi-storey buildings built over road air-spaces | Aug 04, 13 | Feb 23, 16 | Not available | 
| 9004808  | Systems for converting an existing traffic intersection into an intersection having a roundabout, and related methods | Feb 28, 14 | Apr 14, 15 | DESIGN SAFETY ENGINEERING, INC. | 
| 6685386  | Intersection system | May 18, 00 | Feb 03, 04 | Not available |