Skip to main content

Five Years of Data Show: Our Street Safety Projects are Making a Difference

By
Five Years of Data Show: Our Street Safety Projects are Making a Difference
By Julia Malmo

Ever wonder about the effectiveness of projects after they go into the ground? Us, too!  

That’s why, in 2017, we launched the Safe Streets Evaluation Program to help project teams understand whether a transportation safety project’s design is effective, and where there might be opportunities to adjust the design if not. Project evaluation data can also be combined across projects to help the SFMTA track the effectiveness of a certain type of safety improvement, which can in turn streamline the design of future projects. The Safe Streets Evaluation Program helps us work towards achieving Vision Zero, an initiative to prioritize street safety and eliminate traffic deaths in San Francisco.  

This week, we’re looking back on five years of data gathered through our Safe Streets Evaluation Program with the “2022 Safe Streets Evaluation Summary,” an interactive website summarizing the results of 18 bicycle, pedestrian and traffic safety projects implemented since 2017. 

Each of the 18 projects evaluated in the summary report added significant safety upgrades to the streets. Some introduced vehicle travel lane removals (road diets), separated bikeways, separated bike signals, or left-turn traffic calming devices. Others brought general improvements for pedestrians at intersections including pedestrian signal improvements, daylighting (red zones at intersections) and upgraded crosswalks. For every project, the SFMTA drew on a wide range of data—from project-specific observations, to police reports, to speed data—to create a comprehensive view into its’ effectiveness. 

An infographic displaying the project names, key design element, and results. In the lefthand column, under “Inventory” the following projects are listed: 7th Street, 8th Street, Folsom Streetscape, Golden Gate Avenue, Leavenworth Street, Turk Street, Central Embarcadero, Valencia Street, 6th Street, Safer Taylor Street, Indiana Street, California Street, Page Street, Fell Street, Polk Street, Second Street, Masonic Avenue, Left-Turn Safety. In the center column, under “toolbox,” the following elements are listed: Road lane reductions, separated bikeways, bike signals, pedestrian upgrades, left-turn traffic safety. In the righthand column, under “results”, the following findings are listed: Collisions decreased by 18%; 85th percentile speeds decreased by 3%; bicycle volumes increased up to 75%; vehicle-bike interactions at signals decreased by 93%; vehicles blocking the bike lane decreased by 90%; pedestrian-vehicle close calls decreased by 38%; vehicle travel time increased an average of 50 seconds for 7.3 miles of road lane reductions; left turn vehicle speeds decreased by 17%

The evaluation report indicates that the SFMTA’s safety tools are working together to create safer environments for all modes of transportation on city streets. 

You can dig into the whole set of outcomes on the website, but here are some highlights:  

  • Within the projects evaluated, annual collision rates decreased by 18%  

  • Bicycle-related collision rates decreased by 33% and pedestrian-related collision rates decreased by 32%   

  • Bicycle volumes on streets that received bicycle improvements increased up to 75% in the morning peak (8 AM to 10 AM) commute times, with similar growth in the afternoon/evening peak (4 PM to 6 PM) commute times.   

  • Thanks to protected bikeways, the rate of incidents of vehicles blocking the bike lane decreased by 90%.   

  • Close calls or near misses between pedestrians and drivers decreased across evaluated projects by 38%.  

  • Several projects in under-served communities such as the Bayview and Tenderloin are helping to address historic inequities and under-investment in these neighborhoods.   A table titled “Aggregate Project Findings Across Evaluated Projects”. At the top of the table, a blue bar lists out the column titles: Measure; Metric; Overall Findings; Capital Findings; Quick-Build Findings. In the Collisions section, the following sub-categories are evaluated. For Annual Collision Rate: Overall findings show an 18% reduction; Capital Findings show a 19% reduction; Quick-Build Findings show a 17% reduction. For Annual Bike-related collision rate: Overall findings show a 33% reduction; Capital findings show a 5% reduction; Quick-Build findings show a 42% reduction. For Annual Pedestrian Related Collision Rates: Overall findings show a 32% reduction; Capital findings show a 50% reduction; Quick-Build findings show a 26% reduction. In the Vehicle Speed section, the following sub-categories are evaluated. For 85th Percentile Speed: Overall findings show a 3% reduction; Capital findings show a 5% reduction, and Quick-Build Findings show a 3% reduction. For Max Speed Change Observed: Overall findings show a 20% reduction, and no data is present for either Capital Findings or Quick-Build Findings. For Vehicle Travel Time/Vehicle Travel Time in Seconds: Overall findings show 50.00; Capital Findings show 221.00; Quick-Build Findings show 21.50. For the Bike Volume section, the following sub-categories are evaluated. For AM Bike Volumes: Overall Findings show a 75% increase; Capital Findings show a 187% increase; Quick-Build findings show a 41% increase. For PM Bike Volumes: Overall Findings show a 72% increase; Capital Findings show a 107% increase; Quick-Build Findings show a 62% increase. In the Bike Signal Interactions and Close Calls section, the following sub-categories are evaluated. For Bike-Vehicle interactions: Overall findings show a 93% reduction; Capital findings show no data; Quick-Build findings show a 93% reduction. For Close Calls (near misses): Overall findings show a 62% reduction; Capital findings show no data; Quick-Build findings show a 62% reduction. For Average Daily Interactions Post-Implementation: Overall Findings show 2.2; Capital Findings show 0.3; Quick-Build Findings show 3.1. For Bike Compliance w/ Bike Signal: Overall findings show 87% compliance; Capital Findings show 86%; Quick-Build Findings show 88% compliance. For Vehicle Compliance w/ No Turn On Red: Overall findings show 90% compliance; Capital Findings show 86% compliance; Quick-Build findings show 92% compliance. In the Blocking the Bikeway section, Rates of Incidents was evaluated. Overall Findings show a 90% reduction; Capital Findings show a 19% reduction; Quick-Build Findings show a 90% reduction. In the Vehicle-Pedestrian Close Calls Section, Close Calls (near misses) were evaluatd. Overall Findings show a 38% reduction; capital findings show a 0% reduction; quick-build findings show a 34% reduction

The Safe Streets Evaluation team will continue to think creatively about how to build on the evaluation work and use it to inform our current and future projects, programs, and practices through developing a publicly accessible database of all Safe Streets Evaluation data and finding better ways to evaluate project outreach efforts. 

View the 2022 Safe Streets Evaluation Summary 

Learn more about the SFMTA Safe Streets Evaluation Program: SFMTA.com\safestreetsevaluation 

 



Published November 07, 2022 at 10:56PM
https://ift.tt/zXou9OD
Labels:

Comments

Post a Comment

Popular posts from this blog

Reconnecting San Francisco Across Streets and Freeways

By
Reconnecting San Francisco Across Streets and Freeways By With limited space on San Francisco city streets, how can we ensure that current and future transportation options remain accessible and affordable to all? The San Francisco County Transportation Authority (SFCTA), the SFMTA and the San Francisco Planning Department are collaborating through ConnectSF in creating a template for an equitable, sustainable and effective future. Their Streets and Freeways Strategy examines approaches that support San Francisco’s Transit-First , Vision Zero , climate action , and equity goals .  The strategy complements the Transit Investment Strategy released in April 2021. SFMTA staff provided expertise in developing the strategy and is leading the Active Transportation component, exploring ways to build a connected network of bike and pedestrian routes across the city that make biking and walking safe and enjoyable. SFMTA staff from across the agency also developed strategies to ma
Post a Comment
Read more

Have Feedback on the COVID-19 Muni Temporary Service Plan?

By
Have Feedback on the COVID-19 Muni Temporary Service Plan? By Shalon Rogers In March 2020, due to unprecedented constraints on resources brought on by the COVID-19 pandemic, the SFMTA had to make significant transit service reductions. As of January 2021, the agency has been able to restore service to a level where 91% of San Franciscans are within a quarter mile of a transit stop. This is reflected in the SFMTA’s current  COVID-19 Temporary Service Plan .   ' COVID-19 Temporary Service Plan Map The SFMTA is committed to ensuring that our programs and services are  compliant with Title VI of the Civil Rights Act of 1964  and therefore do not have a discriminatory impact based on race, color or national origin. As part of this work, we conducted a Title VI service equity analysis to evaluate the current COVID-19 Temporary Service Plan. The results of this analysis will be presented to the MTA Board of Directors on May 4. The public is invited to attend and provide comments on
Post a Comment
Read more

Chinatown Connects to Muni Metro

By
Chinatown Connects to Muni Metro By Deanna Leo With the completion of Central Subway, customers will be able to ride the T Third Muni Metro all the way from Visitacion Valley to Chinatown. Starting November 19, when Muni Metro riders can first take Central Subway's special weekend service to Chinatown,  prepare to spend the day in Chinatown enjoying all its sights, sounds and flavors. There is so much to explore in the largest Chinatown outside Asia! Tourist attractions include the Dragon’s Gate, Old St. Mary’s Cathedral and Portsmouth Square, the site of San Francisco’s original customs house where today, members of the Chinese community spend the days singing or playing mahjong, a traditional and very popular tile-based game. Fans of Amy Tan’s novel, The Joy Luck Club, can meander the streets of Chinatown searching for the places where her story unfolds. On Wavery Place you can visit the First Baptist Church where the four mothers in the story meet to play mahjong. Muni M
Post a Comment
Read more