IES DG-4-14 PDF Download

The Design Guide for Roadway Lighting Maintenance, specified by the IES DG-4-14 standard, emphasizes the importance of proper maintenance in roadway lighting systems. The standard highlights that the primary goal of roadway lighting is to create a safe nighttime environment for both vehicles and pedestrians. To achieve this, the guide emphasizes the incorporation of maintenance considerations during the design process, as well as the crucial role of ongoing maintenance in ensuring the reliability and high performance of the lighting system.

The outdoor environment poses challenges to the performance of a roadway lighting system, making timely maintenance crucial. Without proper maintenance, the performance of the system may degrade, compromising safety and incurring increased costs due to deferred maintenance. The standard acknowledges that the cost/benefit relationship of maintenance should be determined by the owner, based on their commitment to system reliability.