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Shared parking has recently emerged as an effective means of parking management in urban areas. The success of implementing shared parking necessitates understanding the factors which affect people’s intention to use shared parking. In this study, we used the Combined Technology Acceptance Model and the Theory of Planned Behavior (C-TAM-TPB) as a theoretical framework to investigate the intention to use shared parking from the perspective of parking space suppliers and parking space demanders (drivers). Hypothesis testing using the partial least-square (PLS) method of structural equation modeling (SEM) was performed using an empirical assessment of the shared parking schemes in Taipei City. Our results indicate that perceived control and self-efficacy pertaining to participation in shared parking were the most influential factors for parking space demanders, whereas the influence of significant others was the most influential factor for parking suppliers. We also found that the attitude of potential users toward shared parking can strongly affect their intention to participate, whether as a demander or a supplier. Our findings could help to identify the intrinsic factors affecting one’s intention to participate in shared parking schemes. Our findings could also help government agencies and system operators to promote the notion of shared parking to the public.

Bike-sharing systems are gaining in popularity with a focus on sustainability in transportation. This study extends the concept of green product marketing to green transportation marketing. This study uses four-phase loyalty theory as a framework to examine the users' green loyalty toward shared bicycles. The relationships among four concepts – green perceived value, green trust, green use intention and green loyalty are proposed in the conceptual model. Hypotheses testing is conducted using the empirical assessment of the bike sharing system in Taipei City. Our results show that green perceived value and green trust of users positively relate to green use intention and green loyalty. Further, we also demonstrate green perceived value indirectly affects the green loyalty via green trust and green use intention. Our findings suggest authorities may promote bike sharing by enhancing user perceptions of the system's green value, increase trust in this form of green transportation, and thus foster higher levels of loyalty resulting in continued use of shared bicycles.