Bicycle Parking Requirements in City Building Codes and Their Potential to Promote Sustainability

Bicycle parking requirements in building codes are an important tool for promoting cycling, as several studies have shown that the provision of secure parking increases cycling rates and contributes to sustainability. However, bicycle parking requirements are not comprehensive across the EU and vary widely within countries and between municipalities, which questions what aspects they should consider. This paper analyzes the literature and guidelines on parking requirements and compares their implementation in ten German and four international cities both qualitatively, examining specific requirements for parking facilities, and quantitatively, examining the number of spaces required. The results show that most guidelines set comparable standards in terms of quality and quantity. However, the quality standards defined in the actual building codes are heterogeneous. While most cities require features such as the ability to lock the bicycle frame, they do not adequately address different user groups and insufficiently consider e-bike charging infrastructure. Most cities meet the guidelines for the required number of bicycle parking spaces, but lack a clear rationale based on local conditions, which can lead to an unsustainable under- or oversupply. In summary, cities do not fully utilize the potential of parking requirements to promote cycling because of incomplete qualitative standards.