Capital Metro and Travis Transit both installed the S-1 GARD in 2005. Prior to that, Capital Metro was averaging one severe accident or fatality every year. Since installing the S-1 GARD, they have reported zero right rear wheel incidents. Capital Metro and Travis Transit have familiarized drivers with both the Danger Zone and the S-1 GARD, and their care has helped keep the S-1 GARD effective against the dangers of the Danger Zone, in an area with a sizable university population.