A recent systematic review of twenty five studies with a view to determine what interventions are effective in promoting cycling hedged it’s conclusions. There is little agreement on how cycling behaviour should be measured. It would appear that both motivation and infrastructure can increase cycling participation, but not always. Infrastructure interventions had the potential of slightly larger and longer lasting increases in participation. Best results came from interventions that provided better infrastructure combined with social marketing programs.
“A smaller number of studies found that interventions aimed specifically at promoting cycling (intensive individual intervention, improving or marketing infrastructure for cycling, or multifaceted town level or city level programmes) were associated with positive effects. Those interventions applied at population level were associated with net increases of up to 3.4 percentage points in the population prevalence of cycling or the proportion of trips made by bicycle”.