Binder Edition:
Non-Member Price: $425.00
Member Price: $225.00

Digital Edition:
Non-Member Price: $350.00
Member Price: $150.00
Sustaining/Subscribing Members: FREE DOWNLOAD
Binder & Digital Bundle:
Non-Member Price: $450.00
Member Price: $260.00



ANSI Approved
ANSI/IES RP-8-18 is a substantial revision to previous versions of ANSI/IES RP-8 in that it is an aggregation of several IES Standards covering roadway and parking facility lighting. This document supersedes the following IES Standards:

  • RP-8-14, Roadway Lighting
  • RP-20-14, Lighting for Parking Facilities (revised 2016)
  • RP-22-11, Tunnel Lighting
  • DG-4-14, Design Guide for Roadway Lighting Maintenance
  • DG-19-08, Design Guide for Roundabout Lighting
  • DG-21-15, Design Guide for Residential Street Lighting
  • DG-23-14, Design Guide for Toll Plazas
  • DG-26-16, Design Guide for Lighting the Roadway in Work Zones
  • DG-28-15, Design Guide for Selection, Installation, Operations and Maintenance of Roadway Lighting Control Systems
  • LM-50-13, Photometric Measurement of Roadway and Street Lighting Installations
  • LM-71-14, Photometric Measurement of Tunnel Lighting Installations
  • TM-10-00(R2011), Addressing Obtrusive Light (Urban Sky Glow and Light Trespass) in Conjunction with Roadway Lighting

This Recommended Practice is a compilation of lighting design techniques and criteria, all offered for quality roadway lighting solutions. Each chapter should not be taken in isolation but used as a whole for quality lighting design for roadways and other environments where vehicles are present, such as tunnels, intersections, and parking lots.

A lighting designer will often simplify the design criteria to lighting level and uniformity. However, impacts on visual quality go beyond these simple criteria and encompass minimizing glare and providing spectral contrast on pedestrians, hazards, and other vehicles. All design criteria are important in order to achieve these goals

  1. Improve motorist visual quality
  2. Provide quality light and increased contrast for seeing hazards
  3. Illuminate conflict areas
  4. Minimize environmental impacts of light at night
  5. Employ lighting systems that are easily maintained and minimize energy use

This Standard was prepared with the objective of providing lighting design guidance for most kinds of roadway and roadway-related applications. The recommendations contained in this document, however, may not reflect specific local factors or situations that are not typical and require special treatment. The contents of this Standard are based upon a consensus of roadway lighting experts. It has no legislative authority unless adopted by an authority having jurisdiction. This Recommended Practice is not intended to establish a basis for civil liability.

This Standard is intended to be a single source of reference for roadway lighting; however, additional documents such as electric codes, transportation design guides, and other codes and standards are often required design references.

Binder or Secure PDF: 467 pages (Download: 2 files)
Publisher: Illuminating Engineering Society (2018)
ISBN-13: 978-0-87995-382-9
Dimensions: 8½” x 11” x4”

Additional information

Weight 6 lbs
Dimensions 11 × 8.5 × 4 in

Digital, Binder, Bundle, Digital + New Membership, Binder + New Membership, Bundle + New Membership