It is noted at the outset that the bicycle is recognised as a legitimate transportation mode, especially in the context of sustainable transportation systems. However, bicycle facilities need to provide the cyclists using them with a high level of safety. Unexpected, abrupt changes in horizontal and vertical geometry and cross-section are hazardous to cyclists. Such hazards can be minimised though a safety audit or at the initial design phase by following good design practice. A safety audit of the existing bicycle facilities in Calgary, Alberta was undertaken as a case study to determine the relative safety of different bicycle facilities. With the many km of bicycle facilities in the City of Calgary there are many examples of safe and unsafe situations, and locations where mitigation measures have improved safety. Lateral and vertical clearance, sight distance, grades, pathway / street furniture, lighting, directional signage, pathway/roadway width and ride quality were reviewed as part of the audit. These design elements formed the basis of the field investigation that was undertaken as part of the safety audit. Each of these design elements has the potential to either increase or decrease the safety to a cyclist depending on the situation. The principles and guidelines of what constitutes a comprehensive safety audit for bikeway systems are outlined. Examples of good practice and unsafe situations along with potential applications of the safety audit process for bikeway systems are also discussed. (A)
Abstract