These guidelines have been developed based on the results of a series of experiments that considered more than 40 lighting configurations in both static and dyn

TRB¿s National Cooperative Highway Research Program (NCHRP) Report 624: Selection and Application of Warning Lights on Roadway Operations Equipment explores re

This guide replaces the 1984 publication entitled An Informational Guide for Roadway Lighting. It has been revised and brought up to date to reflect current pra