The SF Bay Bridge added a similar feature during the expensive replacement of the Eastern span, and despite every precaution and a very gradual turn, drivers ro

The SF Bay Bridge added a similar feature during the expensive replacement of the Eastern span, and despite every precaution and a very gradual turn, drivers routinely crashed, and the area was covered with skid marks. One truck went completely over the rail. Apparently a large percentage of drivers go into a state of hypnosis on bridges.