Protected Bike Lanes in San Francisco Mike Sallaberry SFMTA 10 14 2011 NACTO Workshop - Chicago IL
San Francisco 2 nd Highest Density in the U.S. 47 square miles Mild Climate Market Population ~810,000 Masonic Hilly (steepest hill 31.5%) Bikeways to be Discussed Masonic Avenue designed Market Street constructed
SF State of Cycling Report identified top three barriers to more cycling Need for more bike lanes Fear of cars Fear of crossing major streets Bicycle Traffic Signal at Fell/Masonic
Masonic Avenue Existing Roadway Design 100-foot wide right-of-way including sidewalks Sidewalk width ranges from nine to 22 feet Typically two traffic lanes in each direction off-peak Additional tow-away lane added in peak direction AM and PM
Masonic Avenue Topography & Street Network Masonic Ave is the only through street running North/South between Park Presidio and Divisadero Streets. North South Streets
Bicycles Masonic Avenue is a designated city bicycle route Only north-south through route for ½ mile in either direction No dedicated space High traffic volumes and speeds Steep grades Some sidewalk riding
Northbound at Fulton Traffic Volumes Southbound at Fulton
Transit and Delay Cross Street Signal Delay (sec) PM Peak, southbound Existing (3 Lanes in peak direction) Proposed (2 Lanes) Geary 29 53 Anza/O'Farrell 9 9 Turk 5 15 Golden Gate 4 5 Fulton 13 17 Grove 2 3 Hayes 4 9 Fell 35 31 Oak 10 12 Total Delay 111 154 Additional Delay 44
Existing Parking Usage Characteristics
Street Redesign Proposal Developed through Community Process Series of three community meetings: Workshop 1: Small-group exercise to design ideal street Workshop 2: Presented four conceptual options for participant feedback Workshop 3: Presented two refined proposals, Boulevard and Gateway Workshops attended by more than 100 community members
Workshop Survey: Boulevard Preferred 61% of respondents live within one block of Masonic Ave 109 survey responses
The Boulevard Design Chosen by Community No parking, 4 lanes, cycle track, median
The Boulevard Plan View Rendering (Masonic Ave at Fulton St) Masonic Avenue
Bus Bulb Plaza - Conceptual Illustration
Traffic Impacts Traffic model shows that traffic volume can be accommodated in two lanes without tow-away lane Moderate increase of about an additional minute of signal delay due to tow-away lane removal Stopped buses would block traffic lane at all times Cross Street Signal Delay (sec) PM Peak, southbound Existing (3 Lanes in peak direction) Proposed (2 Lanes) Geary 29 53 Anza/O'Farrell 9 9 Turk 5 15 Golden Gate 4 5 Fulton 13 17 Grove 2 3 Hayes 4 9 Fell 35 31 Oak 10 12 Total Delay 111 154 Additional Delay 44
Transit Impacts Removing peak-hour tow-away lane adds less than one minute of travel time for transit 4-6 PM southbound Improved transit safety by removing conflicts with parking maneuvers Bus bulbs reduce delay associated with merging in and out of bus zones Optimized placement of stops to minimize delay
Parking Impacts Parking removed from both sides at all times (about 165 spaces total) Converting parallel parking to angled parking on Turk between Baker and Central would create 20 additional spaces Potential to add additional angled parking on Turk west of Masonic Concerns: Target overflow, loading and deliveries
Masonic Avenue Complete Street and Raised Cycletracks Key Challenge: Cost $20 Million to Construct
Market Street Separated bikeway, diversion of traffic, color
Market Street Safe hit posts and green paint added to buffered bike lane. Purpose: Reduce encroachment by cars and trucks onto the bike lane and sidewalk, to increase the feeling of safety for cyclists. Results: Vehicles traveling in the bikeway reduced by 96%. Double parking (in the bikeway or travel lane) reduced by 65%.
Market Street 44% increase in cyclists on Market from 2009-2011.
Market Street Super Sharrows or Green-Backed Sharrows Purpose: Guide cyclists through a merge and to alert motorists to the presence of cyclists. Also to maintain branding of colored bikeway. Preliminary Findings: Cyclists changed their merging pattern, but no increase in looking over shoulders or using hand signals. No change in motorists behavior.
Colored Bicycle Facilities Higher Visibility Marketing/Branding However, cost is 5x to 10x cost of regular bike lane/marking
Other Separated Bikeways/Cycletracks Alemany Boulevard Division Street Laguna Honda Boulevard
JFK Drive in Golden Gate Park Proposed Design
How to Create Space via Road Diets
vehicles per hour Peak Period Designing for Peak Motor Vehicle Flow Level of Service F Unused Capacity Unused Capacity # of vehicles per hour 27
Road Diets in SF
Other Treatments: Valencia Green Wave Signals timing set to 13 mph progression at 11 intersections One of SF s highest-use bicycle corridors (700 cyclists during 1.5 hour count up from 220) Parallel corridors ideal for transit (Mission) and automobile traffic (Guerrero) SF s complex grid and topography limit where green waves can be implemented
Wider Bike Lanes Buffered Bike Lane Alemany Boulevard Wider Bike + Parking Lane Scott Street
Pavement to Parks - Parklets Car parking spaces converted to ped/bike uses A result of improved inter-agency coordination
On-Street Bike Parking/Corrals 1 car space = 10 to 12 bike 32 spaces
Space is a Limited Resource Use it Wisely and Efficiently
Source: US Census American Community Survey Changes in Mode Share in SF
Key Goal Positive Feedback Loop More accommodation More demand (for bicycle accommodation) MORE PEOPLE RIDING More awareness of cyclists More safety
Thank you! Q/A