HPS high mast luminaires are specified by DMS-11020. TxDOT typically uses 12 400W HPS luminaires on a ring. HPS luminaires are prequalified on the MPL for Roadway Illumination and Electrical Supplies.

HPS high mast luminaires are not pretested, so they require sampling and testing from the field. Two luminaires must be sampled from each high mast type in the field, unless there are less than 15 luminaires of a certain type. These are sent to a luminaire test lab for testing. TRF oversees the testing contract, receives the test reports, and evaluates whether the luminaires pass or fail to meet specifications.

In most cases LED is now a better choice for high mast lighting than HPS because of LED's maintenance and energy benefits. However HPS is a valid light source and may be used as long as it is available.