Paper No. 05-0889 Quantifying Effects of Ramp Metering on Freeway Safety Chris Lee Department of Civil and Environmental Engineering University of Central Florida Orlando, FL 32816, USA Tel: (407) 823-4902 Fax: (407) 823-3315 E-mail: cclee@mail.ucf.edu Bruce Hellinga (Corresponding Author) Department of Civil Engineering University of Waterloo Waterloo, Ontario, N2L 3G1, Canada Tel: (519) 888-4567 ext. 2630 Fax: (519) 888-4349 E-mail: bhellinga@uwaterloo.ca Kaan Ozbay Center for Advanced Infrastructure and Transportation (CAIT) Rutgers University, Civil and Environmental Engineering Piscataway, NJ 08854-8014, USA Tel: (732) 445-2792 Fax: (732) 445-0577 E-mail: kaan@rci.rutgers.edu Words: 5,236 + 7 * 250 = 6,986 words Transportation Research Board 84 th Annual Meeting January 9-13, 2005 Washington, D.C. TRB 2005 Annual Meeting CD-ROM Paper revised from original submittal.