Logan and colleagues (1998) evaluated the effect of giving away bicycle helmets to 403 students attending kindergarten through 8th grade in two small Texas towns. The program involved a full school day during which students were fit for helmets, exposed to bicycle safety information, and given free helmets. Over the period between two weeks following the program and six months later, raffle tickets to enter drawings for money prizes were given to children who were observed wearing helmets while bicycling. Observations of helmet use were made at baseline and at one day, two weeks, seven months, and nine months following the initial full-day program. An initial rise in helmet use occurred among the younger children, but not among the adolescent 7th and 8th graders. The possible effect among the elementary school-aged children dissipated by the final follow-up, nine months after the program. This finding suggests that the program was only effective among younger children, and led only to transient improvements in helmet use even among this age group.