| Term | Definition |
|---|---|
| CIE |
Commission Internationale de l'Éclairage (International Commission on Illumination) |
| EPA |
Effective Projected Area |
| HID |
High Intensity Discharge Lighting |
| HPS |
High Pressure Sodium |
| IES |
Illuminating Engineering Society |
| IP |
Ingress Protection Rating |
| LED |
Light Emitting Diode |
| LPS |
Low Pressure Sodium |
| LRL |
LED Roadway Lighting Ltd. |
| MH |
Metal Halide |
| MV |
Mercury Vapour |
| RP-8 |
Illuminating Engineering Society Guidelines for Roadway Lighting |
| WEEE |
European Waste Electrical and Electronic Equipment Directive |
