Federal Highway Administration University Course on Bicycle and Pedestrian Transportation Shared Roadways Lesson 14 (This picture shows bicyclists not wearing helmets. FHWA strongly recommends that all bicyclists wear helmets.) Publication No. FHWA-HRT

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-2 Lesson Outline Shared roadways: –Pavement markings. –Wide curb lanes. –Paved shoulders. –Signed routes. –Bicycle boulevards. Design considerations: –Rumble strips. –Drainage grates. –Railroad crossings. Avoid!! –Sidewalk bikeways. –Raised curb dividers.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-3 Shared Roadways Nearly all roads (except where bicycling is prohibited): –Existing road. –Wide curb lanes. –Paved shoulder. Lower speeds and traffic volumes.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-4 Wide Curb Lanes Provide where inadequate width exists for bike lane or shoulder. 4.2–4.5 meters (m) (14–15 feet (ft)). Not greater than 4.5 m (15 ft)—cars use as two lanes.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-5 Shared Lane Pavement Markings Indicate possible presence of bicyclists to motorists. Improve bicyclist positioning near parked vehicles and other obstacles.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-6 Shoulders and Shoulder Bikeways Many other benefits besides bicycling. Min. 1.2 m (4 ft). Greater width for: –Roadside barriers. –High traffic volumes. –High traffic speeds. –Steep grades.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-7 Considerations: –Route continuity. –Bicyclist and vehicle demand. –Adjusted traffic control devices. –Removed or restricted parking. –Smooth pavement surface. –Sufficient street width. Designated Bike Routes Source:

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-8 Bicycle Boulevards Direct, continuous route. Cross-traffic stops. Vehicle traffic diverted. Traffic calming used. Ample signing. Bicyclists protected at crossings. (This picture shows a bicyclist not wearing a helmet. FHWA strongly recommends that all bicyclists wear helmets.)

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-9 Rumble Strips Provided to alert motorists, but hazardous to bicyclists. Min. 4 ft of usable shoulder width required. Periodic gaps may be provided. AVOID THIS! (rumble strips in bike lane)

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-10 Drainage Grates

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-11 Railroad Crossings

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-12 Treatments to Avoid Sidewalk bikeways: –Conflict at driveways/intersections. –Conflict with pedestrians. –Lead to confusion about right-of-way. Raised concrete curbs (or other barriers) separating motor vehicles from bicycles.

Federal Highway Administration University Course on Bicycle and Pedestrian Transportation 2-13 Lesson Summary There are many ways to allow motor vehicles and bicycles to share the same roadway. Use of specific design elements creates a shared roadway that is bicycle-friendly.