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16 <br /> <br />Sidewalk Level Class IV Bikeways <br />Sidewalk level separated bike lanes are bikeways built at sidewalk elevation that provide <br />dedicated space for bicyclists. They can offer a high-comfort environment for people biking <br />due to vertical separation from vehicular traffic. As these are constructed at the same level <br />as sidewalks, they depend on clear, intentional separation so people walking and biking <br />don’t unintentionally mix. They also minimize maintenance costs due to limited motor <br />vehicle wear and tear, and less accumulation of debris from the general purpose travel <br />lanes. <br /> <br />Guidance <br />• The recommended width of a <br />sidewalk-level Class IV bike lane is 7 <br />feet (minimum width 6 feet). <br />• Provide separation between the bike <br />lane and sidewalk using street trees, <br />landscaping, or tactile surfaces that <br />people with vision disabilities can <br />detect underfoot or by cane. <br />• Use visual contrast between the bike <br />lane and sidewalk surface to reinforce <br />where different users belong. <br />• Where the bike lane shifts between <br />street level and sidewalk level at <br />intersections and other mixing zones, <br />provide a bicycle transition ramp. <br />• At intersections: <br />o It is preferable to bend the bike lane away from the travel lane and transition <br />the bike lane to form a protected intersection. This design minimizes <br />exposure to turning motorists. <br />o Where protected intersections are not feasible, it is preferable for the raised <br />bike lane to transition to street level within 10 feet of a pedestrian crosswalk. <br />This option should be limited to locations where motorist right turn volumes <br />and/or bicyclist volumes are low and permissive conflicts are acceptable. In <br />locations where motorist right turn volumes require a right turn lane, only <br />transition the raised bike lane to street-level where a right-turn signal is <br />provided.