Analytical geometric design of bicycle paths

An advanced design classification system for bicycle paths, based on geometric features and force equilibrium, can pave the way for improved bicycle safety, accident prevention and the development of design guidelines. A design and classification system does exist for bicycle paths, but the number of accidents has led to ambivalence about its validity and effectiveness. In addition, a universally accepted classification system has not yet been approved or adopted. This paper presents a unique set of design parameters, analytically developed based on formulas that consider the physical characteristics and dimensions of individual bicycles. The proposed design system is based on theoretical trigonometric derivations. The model was validated with the real-world geometry of the transportation infrastructure of the city of Antwerp, Belgium. The conclusions of this study are useful for evaluating the effectiveness of bicycle paths during the design stage without the necessity for real-world experiments. The results will thus be valuable for stakeholders working on policy frameworks, bicycle safety and riding comfort.