Photopic vs Scotopics in Action
The Cree Lighting Garage Lighting Survey
An independent survey commissioned by Cree and executed by Mindwave Research was administered in a Raleigh, North Carolina municipal parking garage.
The primary objective of the study: discover if there is a significant perceived improvement in overall perceptions of the parking garage after replacing HID lights with LED lights.
The results:
- Perceptions of the lighting quality improved three-fold with LED lights installed
- Overall satisfaction with the parking facility doubled after the lighting was changed to LED
- Both males and females felt significantly safer with LED lights installed
- Ratings on maneuverability, cleanliness, and number of available parking spaces also improved significantly after the installation of LED lighting








