Roadway operations equipment used by state departments of transportation (DOTs) and transportation agencies for activities such as construction, maintenance, and incident response generally deploys on all types of roadways, during daytime and nighttime hours, and in all weather conditions. To improve motorist and worker safety, equipment must be readily seen and recognized. NCHRP Research Report 1085: Development of Guidelines for Vehicle and Equipment Marking and Lighting , from TRB’s National Cooperati…