Australians Learning to Leave Cars Behind
Education appears to have had a significant effect in Australia, through a program called TravelSmart:
"Each TravelSmart project is different, but in general, the individualized educational programs provide whatever information and emotional support - like personal bicycle doctors or bus drivers to explain the schedule - to help any member of any marketed household change driving behavior on any trip, not just the commute trip. Printed materials are delivered by bicycle as TravelSmart practitioners practice what they preach.
Other psychological concepts, like 'reciprocity,' 'creating community' and 'bypassing adversaries,' ensure that TravelSmart is only working with citizens willing to change while reassuring them of the societal value of their transportation behavioral change."