Traffic Design - Approved LED Luminaires for Roadway Lighting

**Important Notice**

As of January 1, 2020 , WSDOT has changed to using LED luminaires with a Correlated Color Temperature (CCT) of 3000K nominal , and is no longer including photocell sockets on luminaires . The lists provided here reflect these changes. For WSDOT contracts advertised before January 1, 2020 , and for other agencies which may be using these lists, the previous 4000K CCT lists are provided at the bottom of this page, although they are marked as “expired” for WSDOT purposes. More details are provided in the individual PDF files. Orders for projects advertised before January 1, 2020, should use the new approved lists if the orders have not yet been placed, if possible.

The Washington State Department of Transportation classifies LED Roadway Luminaires by their High Pressure Sodium (HPS) wattage equivalent, as described in Standard Specification 9-29.10(1)B (  The lists provided on this page are separated by luminaire form type, such as cobra-head or wall mount. Refresh this page every time you visit to ensure that you are getting the most up to date versions of the lists.

Each list includes contract effective dates. Previous versions of lists will continue to be provided, but they will include an expiration date – contracts that have already been advertised may continue to use the list in effect at time of advertisement, or may use the current unexpired list. Contractors should include a copy of the list they are using as part of any material submittals.

Approved LED Luminaire Lists

Conventional Roadway (Cobra-Head) Type

Version 2021-08-16 (Current) (pdf 162 kb); Effective Date: 08/16/2021

Version 2021-08-02 (Expired) (pdf 158 kb); Effective Date: 08/02/2021; Expiration Date 08/15/2021

Version 2021-01-25 (Expired) (pdf 152 kb); Effective Date: 01/25/2021; Expiration Date 08/01/2021

Version 2020-09-15 (Expired) (pdf 139 kb); Effective Date: 09/15/2020; Expiration Date 01/24/2021

Version 2020-02-18 (Expired) (pdf 45 kb); Effective Date: 02/18/2020; Expiration Date: 09/15/2020

Version 2020-01-01 (Expired) (pdf 45 kb); Effective Date: 01/01/2020; Expiration Date: 02/17/2020

Version 2019-06-27 (Expired) (pdf 46 kb); Effective Date: 06/27/2019; Expiration Date: 12/31/2019

Wall Mount Type

Version 2020-02-18 (Current) (pdf 28 kb); Effective Date: 02/18/2020

LED Luminaire Evaluation Criteria

In order to ensure that luminaires are interchangeable both with existing high pressure sodium (HPS) inventory, and with future iterations of LED luminaires, WSDOT designates LED Roadway Luminaires by Wattage Class. These classes are based on their HPS equivalents.  The criteria for evaluating and classifying LED luminaires, as well as copies of the AGi32 test grid files, are available here.

WSDOT Evaluation Criteria for LED Luminaires (pdf 111 kb); Updated January 2021
WSDOT AGi32 Test Grids for Cobra-Head Type Luminaires (zip 2.32 mb)

The AGi32 files provided here are for version 19 and later.  Due to changes made by the software manufacturer starting with version 19, these files are not compatible with versions of AGi32 earlier than version 19.

Manufacturers/vendors submitting new LED luminaires for approval need to provide both:

  • The single unit and roadway test grid files with the desired luminaire(s) loaded and all calculations run.
  • A results report as described in the evaluation criteria document.

LED Luminaire ANSI/NEMA Labeling

Consistent with the LED wattage classification system, WSDOT uses a modified version of the standard ANSI/NEMA C136.15 label on LED luminaires. Details of this modified label are available here.

WSDOT ANSI/NEMA Labels for LED Luminaires (pdf 23 kb)

For questions, please contact us at