The pilot project reduced crashes at the most dangerous intersection in the City by 75%.
The technology reduces single-vehicle crashes by 40 percent, he said.
Road infrastructure safety measures can reduce serious crashes by more than half.
Signing improvements will generally reduce crashes by about 30%.
However, the increased incentive to stop could reduce right-angle crashes during turns.
American research suggests non-planar driver side mirrors may help reduce crashes.
Studies of drivers' education programs have shown that they improve the knowledge of safe driving but do not reduce crashes.
Variable speed limits offer some potential to reduce speed-related crashes.
The program has worked in other states, reducing teenage crashes by 31 percent in Michigan, for example.
Perhaps the Council's efforts would be better spent supporting measures to reduce crashes.