PUBLIC TRANSPORTATION SAFETY INTERNATIONAL was founded in 1993 and revolutionized the public transit safety industry with its S-1 GARD.  The S-1 GARD is a curved polyurethane guard, mounted in front of the right rear wheels of transit buses, designed to deflect a person out of the path of the wheels, in order to prevent injury or death. It is currently installed on bus fleets in major cities such as Los Angeles, Washington, D.C., San Francisco, and Baltimore, among others. The S-1 Gard is recommended by the Transportation Research Board as a strategy for mitigating bus collisions with pedestrians, and has been credited by public transit officials with significantly reducing, if not eliminating, injuries and fatalities involving the rear right wheels of transit buses.

For more information, visit

S-1 GARD PRODUCT OVERVIEWabout_files/S1-brochure.pdf


PacMutual Plaza, 523 West 6th Street Suite 1101, Los Angeles, CA 90014

MDZ SHIELD®home.html

Minimize Danger Zone