This study assesses the results of a 2-year community-based peer education program aimed at increasing HIV/AIDS knowledge, attitudes toward condoms, and condom use behavior among taxicab and tricycle drivers in the Philippines. Pretest, posttest, and follow-up data were collected throughout the educational intervention program. The results of the repeated measures analysis of variance (ANOVA) indicate a significant change on knowledge about HIV/AIDS from baseline to posttest and from posttest to follow-up (F= 449.27, df= 2, pless than .001). There was also a significant change on attitudes about condom use from baseline to posttest and from posttest to follow-up (F= 425.19, df= 2, p= 0.001), and a significant effect on condom use behavior with commercial sex workers from baseline to posttest and follow-up (F= 428.31, df= 2, p= .001). The peer-mediated intervention was found to be an effective means of HIV/AIDS prevention among taxi and tricycle drivers in the Philippines. (Contains 5 tables and 1 figure.)