1. (1) Federal Highway Administration U.S. Department of Transportation: Safety Benefits of Roadway Lighting Using Small Target Visibility (STV) Design, Final Report, Washington, U.S.A., (1997).
2. (2) ANSI/IESNA RP-8: American National Standard Practice for Roadway Lighting, (1990).
3. (3) ANSI/IESNA RP-8: American National Standard Practice for Roadway Lighting, (2000).
4. (4) CIE Publication No. 115: Recommendations for the Lighting of Roads for Motor and Pedestrian Traffic, (1995).
5. Toward Development of a Visibility Model for Roadway Lighting Design