1. Sky-glow conscious lighting design;Pollard;Lighting Research and Technology,1994
2. CIE 93-1992. Road lighting as an Accident Countermeasure.
3. The relationship between road lighting quality and accident frequency;Scott,1980
4. Freeway accidents and illumination;Box;Highway Research Record,1973
5. The relationship between road lighting quality and accident frequency;Box;Highway Research Board,1979