3. Introduction Goals To study what kinds of street treatments could be implemented to improve bicycle safety and accessibility on Shattuck Avenue in the downtown area To propose a schematic street design that will render Shattuck Avenue a complete street.
5. Introduction Background Downtown Berkeley as pedestrian-oriented and bike-friendly place Mode Split for Berkeley and Other California Cities (U.S. Census 2000, Journey to Work)
6. Introduction Cyclist-involved collisions in Downtown Berkeley (source: City of Berkeley) Issues Lack of north-south bike routes Bike collisions on Shattuck Avenue
7. Introduction Issues Shattuck Avenue is a transit-priority street Balance between the safety of cyclists and pedestrians, and the efficiency of busoperation.
8. Introduction Complete Streets Provides safe access for all modes of travel and for all ages and abilities (National Complete Streets Coalition) Steve Price’s complete street vision in Portsmouth, Virginia
10. Literature Review Do bike facilities affect cyclists’ route choice? Travel time v. Safety Bicycle commuters value time over safety (Bovyand Bradley, 1985; Aultman-Hall et al. ,1997) Safety-cautious cyclists spend more time to use facilities deemed safer (Hopkinson and Wardman, 1996; Tilahunet al., )
11. Literature Review What kind of bicycle facilities would make Shattuck Avenue a safe bicycle route? Bikeways Intersection treatments Bus stop design minimizing bus-cyclist conflicts
12. Literature Review Bikeways Separated bike paths v. bike lanes v. shared lanes Barriers: limited right-of-way and high costs. Issues: pedestrian-cyclist conflicts and “right-hook” accidents Ninth Avenue Bike Path in New York
13. Literature Review Intersection treatments Color treatments Bike boxes Outward placed bike crossings Dutch style junction design (Mark Wagenbuur, 2011)
14. Literature Review Bus stop treatments Shared bike/bus lane Cycle track behind bus stops Bus stop island in Denmark (Pucher, 2010)
18. Cyclist Survey Results Total 210 responses; 70% online survey Experiencedbicycle commuters. 49% of all participants are older than 40. More male cyclists (125) responded to the survey than female cyclists (79).
20. Cyclist Survey Shattuck Cyclists Are younger than non-Shattuck Cyclists Depend on their bicycle as their daily mode of transportation Prefer faster routes to safer routes Prefer both bike paths and bike lanes Yet, they tend to avoid traffic 40% of Shattuck Cyclists ride on sidewalk to avoid fast or heavy traffic
21. Cyclist Survey Dangerous cycling About 60% of Shattuck Cyclists experienced dangerous situations. Intersections, parking bays, andbus stops. Most dangerous intersections at Center Street and at Allston way due to nonlinear street layouts, high pedestrian and bus traffic, parking bays, and road congestion.
22. Cyclist Survey Summary Provide bike facilities on the high collision areas such as intersections, bus stops, and parking bays. Different strategies for the two cyclist groups E.g., separated bike paths to attract non-Shattuck Cyclists.
24. Design Recommendation Goals Complete street: take back pedestrian and cyclist right-of-wayfrom motorists. About 80% of public ROW is dominated by motorists. Wide travel lanes and parking bays hinder transforming Shattuck Avenue into a complete street.
26. Design Recommendation General design guideline Bike paths or lanes when ROW is available (parking bay elimination) Coloredtreatments Colored bike boxes and outward bike crossingsat intersections Cycle tracks behind bus stops
