Scotopic vs. Photopic in Action:

The Cree 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

© Mindwave Research and CREE Survey Results , 2007