Hill and Smith
- http://www.hill-smith.co.uk/
- Manufacture and supply highway safety systems, including safety barriers, and crash cushions. Features a range of product data and technical specifications.
Hwycom, Inc.
- http://www.hwycom.com/
- Producer of fiberglass breakaway sign supports and barricades . Includes a video of a crash test and data for test results at 20 and 60 mph.
Metalith
- http://www.themetalith.com/
- Offers blast mitigation barriers and K12-certified anti-ram vehicle barriers for use in perimeter security. Blast mitigation and crash testing videos.