DYNAMIC TESTING OF LUMINAIRE SUPPORTS

This report examines current breakaway designs for luminaire support structures in terms of existing and proposed impact testing procedures and criteria. Improvements in each type of breakaway base are presented. Test data from relevant laboratory and full-scale tests on these structures are analyzed according to the Nov. 16, 1970 FHWA notice "Application of Highway Safety Measures, Breakaway Luminaire Supports." Alternate test procedures, including target mounting specifications, instrumentation requirements, evaluation procedures, and field installation guidelines are presented. Specific problems currently found in each of the breakaway designs are discussed, and solutions offered. /FHWA/