The Luminaire Cycles dialog may be accessed from Roadway Optimizer or from the Roadway Calculation Grids dialog.

- In Roadway Optimizer, Luminaire Coverage section, click on the Override button.
- In the Roadway Calculation Grids dialog, click on the Configure button and then on the Luminaire Cycles button.

"Luminaire Cycles" refers to the number of luminaire cycles that will be included in the Roadway Optimizer calculation and optimization procedure. A luminaire cycle is the distance between consecutive luminaires on the same side of the roadway.

The **Luminaire Cycles Towards Observer** can be based on:

- A Set Distance, measured in feet or meters, depending on the units you are working in. Special note: Setting Distance = 0 allows you to limit the number of luminaires to one cycle (necessary for AS1158 - Cat P).
- A distance defined in luminaire mounting heights (MH's). For example, if your luminaire has a mounting height of 30' and you select 6 MH's, luminaires up to 180' (6x30') measured in the direction of the Observer will be included in the calculation.

The ANSI-IES RP-8-18 default toward the observer is 83.07 meters or 272.4696 feet. Other standards have different defaults.

The **Luminaire Cycles From End of Calculation Area** are defined similarly. The ANSI-IES RP-8-18 default is 12 mounting heights past the calculation area. Other standards have different defaults.