This document discusses testing social norms as an incentive for active transportation behavior. It describes an experiment that offered different incentives (financial, social gift, mixed market/social, social/cultural) to encourage commuters to use active transportation for one week. The experiment found that social/non-financial norms had a greater effect on changing behavior than financial incentives alone or mixed incentives. It concludes that relationships between market and social incentives are different, and social norms have significant potential to influence willingness to change behavior.