This brief paper reports the results of two observational studies examining the impact of fines for youth tobacco possession on public smoking among youth. Preliminary findings are presented that suggest that when police issued warnings and tickets to reduce underage youth possession of tobacco, in both towns the number of youth smoking in public declined. The study focused on an important health behavior; application of a potentially powerful, community-wide intervention; the use of two distinct communities; and unobtrusive assessment of adult and youth smoking rates.