Economic model for the maintenance of traffic signals. Paper presented at the 47th Highway Research Board (HRB) Congress, Washington, D.C., January 1968.

The purpose of this investigation was to develop a comprehensive traffic signalman flasher maintenance program, using systems analysis techniques, that was both economical and practical for the Crawfordsville maintenance district in Indiana. All phases of the corrective and preventive maintenance operations were analysed to determine the optimal maintenance program. The optimum lamp replacement program, involving the determination of the proper time duration for the most economics group lamp replacements, was obtained for annual conditions. The shortest routes for preventive operations were ascertained for several maintenance alternatives, and the most economics group lamp replacements, was obtained for annual conditions. The shortest routes for preventive operations were ascertained for several maintenance alternatives, and the most economic option revealed.