“…Many studies have relied on the Theory of Planned Behaviour (TPB, Ajzen, 1991), a model grounded in social psychology, to explain the behavioural intention of bicycle usage (Bamberg & Schmidt, 1994;Burbidge & Goulias, 2010;De Bruijn, Kremers, Singh, van den Putte, & van Mechelen, 2009;Eriksson & Forward, 2011;Heinen, Maat, & van Wee, 2011;Muñoz, Monzon, & Lois, 2013). The aim of this study was to enrich the TPB by including social identity as a predictor variable, because behaviour is not determined by purely utilitarian considerations, but also by the symbolic consequences for one's self-concept and identity as a member of certain groups (Mannetti, Pierro, & Livi, 2004).…”