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14 <br /> <br />Separated Bikeways (Class IV) <br />Separated bike lanes are a dedicated bikeway facility type that combines the user <br />experience of a conventional bike lane design adjacent to a roadway but physically <br />separated from vehicles similar to a shared-use path. They are physically separated from <br />motor vehicle traffic by a vertical element and are distinct from the sidewalk. Separated <br />bike lanes can be constructed at sidewalk level, roadway level, or an intermediate level <br />between the sidewalk and street. Separated bike lanes can be designed to serve one-way <br />bicyclist traffic or two-way bicyclist traffic. <br />General Guidance <br />• In Pleasanton, sidewalk-level bikeways are the standard design. <br />• Separated bike lanes are a dedicated bike-only facility type and should be <br />considered on any road with one or more of the following characteristics: <br />o Arterial roadways <br />o Traffic lanes: 3 lanes or greater <br />o Posted speed limit: 35 mph or more <br />o Traffic: 6,000 vehicles per day or greater <br />o Streets that are designated as truck or bus routes <br />• One-way separated bike lanes should be 7’ wide to allow for passing, but widths of <br />6’ are the minimum. <br />• The width of the physical separation may vary depending on type of vertical <br />separation used but typically is a minimum of 3’ wide. If adjacent to on-street <br />parking, a minimum 3’-wide buffer is required. <br />General Considerations <br />• Separated bike lanes are more attractive to a wider range of bicyclists than striped <br />bikeways on higher volume/higher speed roads since they are designed to prevent <br />motor vehicles from entering the bikeway. They also provide greater comfort to <br />pedestrians by separating them from bicyclists operating at higher speeds. <br />• Separated bike lanes are preferred over shared-use paths in higher density areas, <br />commercial and mixed-use development, and near major transit stations or <br />locations where peak pedestrian volumes are anticipated to exceed 200 people per <br />hour on a shared use path. <br />• Choice of one- or two-way facility should be based on connectivity, bicyclist desire <br />lines, roadway configuration, and potential intersection conflicts. Generally, one- <br />way facilities are preferred.