Structural supports for highway signs, luminaires, and traffic signals.

This report contains the findings of a study to develop recommended revisions to the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals. The report describes the research effort and provides recommendations for updating and refining the specifications. A strategic plan for further enhancement of the specifications and for conversion of the specifications to load and resistance factor format is also included. The material in this report will be of immediate interest to specification writers, structural engineers, and designers. (Author/publisher) This report may be accessed by Internet users at http://gulliver.trb.org/publications/nchrp/nchrp_rpt_494.pdf