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, p<.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.