This study was an investigation of the steel channel sign supports currently used by Ohio and many other states. These steel supports when struck by an automobile were found to yield at the ground line and the vehicles showed deceleration values well within human tolerances levels. The study included a laboratory simulation of the crash tests, a computer program to extrapolate the results and a full-scale field testing program. The field testing program included 40 crash tests with velocity, sign type, angle of collision incidence and soil support conditions as the variables.
Abstract