Vision Zero In Alexandria, VA
Vision Zero in Alexandria, VA
10-Year Crash Trends CY2011-CY2020 Vision Zero Crash Analysis (2016-2020) – City of Alexandria 2
There is a downward trend for all crashes over the last ten years. All Crashes - 10 Years 2,000 1,800 Vision Zero initiated 1,600 1,400 1,200 1,000 800 600 400 200 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.89 The strength of the trend is expressed through the R2 value. The closer the R2 value is to 1 or -1 the stronger the trend. Positive R2 values indicate an upward trend, negative R2 values indicate a downward trend, and zero indicates a flat trend. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 3
The downward trend for all crashes is seen across all modes over the last ten years. Pedestrian Crashes - 10 Years Vehicle Only - 10 Years Bicyclist Crashes - 10 Years 1,800 90 1,600 80 1,400 70 1,200 60 1,000 50 20 800 40 15 600 30 400 20 200 10 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.89 0 35 30 25 10 5 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.69 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.03 Vision Zero initiated at Alexandria 2016 The strength of the trend is expressed through the R2 value. The closer the R2 value is to 1 or -1 the stronger the trend. Positive R2 values indicate an upward trend, negative R2 values indicate a downward trend, and zero indicates a flat trend. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 4
There is a downward trend for KSI crashes over the last ten years. KSI Crashes - 10 Years 60 Vision Zero initiated 50 40 30 20 10 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.35 The strength of the trend is expressed through the R2 value. The closer the R2 value is to 1 or -1 the stronger the trend. Positive R2 values indicate an upward trend, negative R2 values indicate a downward trend, and zero indicates a flat trend. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 5
The downward trend for KSI crashes is seen across all modes over the last ten years. Vehicle Only KSI Crashes - 10 Years Pedestrian KSI Crashes - 10 Years 40 18 35 16 30 14 4 3 10 20 8 15 2 6 10 4 5 0 5 12 25 Bicyclist KSI Crashes - 10 Years 1 2 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.33 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.32 0 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Trend line R² -0.05 Vision Zero initiated at Alexandria 2016 The strength of the trend is expressed through the R2 value. The closer the R2 value is to 1 or -1 the stronger the trend. Positive R2 values indicate an upward trend, negative R2 values indicate a downward trend, and zero indicates a flat trend. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 6
The average annual proportion of KSI crashes for the last ten years is about 3%. Vision Zero initiated Vision Zero initiated at Alexandria 2016 Vision Zero Crash Analysis (2016-2020) – City of Alexandria 7
Over the last ten years, vehicle-only crashes have had the highest annual totals of KSI crashes followed by pedestrians and then bicyclist crashes. Vision Zero initiated Vision Zero initiated at Alexandria 2016 Vision Zero Crash Analysis (2016-2020) – City of Alexandria 8
The annual crash averages by all modes and crash types for 2016-2020 are less than those during 2011-2015. Vehicle only crashes (all and KSI) saw the biggest drop in averages. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 9
High Priority Crash Locations CY2011-20 Location ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Location Name Edsall Road & S Van Dorn Street Seminary Road & Mark Center King Street & N Henry Street Duke Street & N Quaker Lane Duke Street & S Pickett Street Duke Street & N/S Jordan Street Duke Street & S Walker Street S Washington & Wilkes Street King Street & N Quaker Lane & W Braddock Road Mount Vernon Avenue & W Glebe Road Seminary Road & 395 Russell Road & Callahan Drive Stevenson Avenue & S Van Dorn Street Seminary Rd & Library Lane S Washington & Gibbon Street Stevenson Avenue & S Walker Street KSI Injury Grand Priority Rank* Crashes Crashes Total Score# 4 21 25 40 1 2 26 28 35 2 2 20 22 35 2 7 15 22 31 3 1 21 22 30 4 2 16 18 29 5 1 26 27 28 6 2 15 17 28 6 3 17 20 26 7 2 13 15 25 8 1 22 23 25 8 5 7 12 24 9 2 13 15 23 10 3 12 15 23 10 2 14 16 23 10 0 16 16 23 10 *These locations are in the 99th percentile (Top 1%) of the priority score by location. # Priority score is calculated as follows: vehicle injury crashes are given a multiplier of 1, a multiplier of 2 is used for vehicle KSI crashes and bicyclist and pedestrian injury crashes, and a multiplier of 4 is used for pedestrian and bicyclist KSI crashes. Vision Zero Crash Analysis (2016-2020) – City of Alexandria 10
Locations with the Most KSI Crashes CY2011-20 Total KSI Rank* Crashes Location ID Location Name 1 Duke Street & N Quaker Lane 6 0 1 7 1 2 Russell Rd & Callahan Dr 3 1 1 5 2 4 0 1 5 2 1 1 3 5 2 2 0 2 4 3 3 4 5 King Street & Park Center Drive Stevenson Avenue & Yoakum Parkway Edsall Road & S Van Dorn Street Vehicle Bicyclist Pedestrian 6 S Pickett St & S Van Dorn Street 3 0 1 4 3 7 King Street & S 28th Street 2 0 2 4 3 8 S Henry Street & Duke Street 3 0 1 4 3 * These are in the 99th percentile (Top 1%) of KSI crash totals by locations Vision Zero Crash Analysis (2016-2020) – City of Alexandria 11
Locations with High Pedestrian and Bicyclist Injuries CY2011-20 Location ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Location Name Injury Crashes Rank* # King Street & N Henry Street Edsall Road & S Van Dorn Street Duke Street & N/S Jordan Street S Washington & Wilkes Street Duke Street & S Pickett Street 10 9 8 7 7 1 2 3 4 4 Stevenson Avenue & S Walker St 7 4 Mount Vernon Ave & W Glebe Rd Duke Street & N Paxton Street 6 6 5 5 Edsall Road & S Whiting Street 6 5 Duke Street & N Ripley Street Mount Vernon Avenue & Four Mile Road N Beauregard St & Rayburn Ave 6 5 5 6 5 6 Stevenson Ave & S Van Dorn St 5 6 King Street & Chesterfield Road 5 6 E Reed Ave & Richmond Ave 5 6 N Beauregard St & Sanger Ave 5 6 Madison St and N Patrick St King St & Russell Rd & Callahan Gibbon St & S Washington St 5 5 5 6 6 6 Madison St & N Washington St 5 6 5 6 5 6 5 6 Stevenson Avenue & Yoakum Parkway Duke St & S Washington St N Van Dorn St & Holmes Run Parkway # Injury crashes are a sum of KSI and non-KSI related injuries for bicyclist and pedestrian crashes at a location * These are in the 99th percentile (Top 1%) of crash totals by locations Vision Zero Crash Analysis (2016-2020) – City of Alexandria 12
Locations with High Pedestrian Injuries CY2011-20 Location ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Location Name Edsall Road & S Van Dorn St King Street & N Henry Street Duke Street & N/S Jordan St Duke Street & N Paxton Street Duke Street & N Ripley Street Edsall Road & S Whiting St S Washington & Wilkes Street Stevenson Ave & S Walker St Mount Vernon Avenue & W Glebe Road Mount Vernon Avenue & Four Mile Road E Reed Avenue & Richmond Highway N Beauregard St & Rayburn Avenue King Street & Chesterfield Road N Patrick Street & Madison Street Madison Street & N Washington Street Duke Street & S Pickett Street Duke Street & Washington Street N Van Dorn Street & Holmes Run Parkway Injury Crashes Rank* # 8 8 7 6 6 6 6 6 1 1 2 3 3 3 3 3 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 # Injury crashes are a sum of KSI and non-KSI related injuries for pedestrian crashes at a location * These are in the 99th percentile (Top 1%) of crash totals by locations Vision Zero Crash Analysis (2016-2020) – City of Alexandria 13
Locations with High Bicyclist Injuries CY2011-20 Location ID 1 2 3 4 5 6 7 8 9 10 Location Name Russell Road & Callahan Dr Mount Vernon Ave & Executive Ave Mill Road & Eisenhower Ave Sanger Ave & Mount Vernon Ave King St & S Walter Reed & N Beauregard Pendleton St & N Patrick St Green Street & S Royal Street King Street & N Henry Street Duke Street & S Pickett Street King St & Union St Injury Crashes Rank* # 3 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 # Injury crashes are a sum of KSI and non-KSI related injuries for bicyclist crashes at a location * These are in the 99.5th percentile (Top 0.5%) of crash totals by locations Vision Zero Crash Analysis (2016-2020) – City of Alexandria 14
Locations with High Vehicle Only Injuries CY2011-20 Location ID Location Name 1 Duke Street & S Walker St 3 Seminary Road & Mark Center Seminary Road & 395 4 Duke Street & N Quaker La 2 5 6 7 Duke Street & W Taylor Run Parkway King Street & N Quaker Lane & W Braddock Road Seminary Road & N Beauregard Street Injury Crashes Rank* # 27 1 25 2 22 3 21 4 19 5 18 6 17 7 16 8 8 S Patrick Street & Gibbon St 9 Edsall Road & S Van Dorn St 16 8 10 Duke Street & S Pickett St N Van Dorn St & Richenbacher Ave & Sanger Av King Street & Park Center Dr N Beauregard Street & W Braddock Road Eisenhower Avenue & S Van Dorn Street Seminary Rd & Dawes Ave 15 9 14 10 14 10 13 11 12 12 12 12 Duke Street & S Patrick St Edsall Rd & S Pickett St & Cameron Station Blvd 12 12 12 12 King Street & N Henry Street 12 12 11 12 13 14 15 16 17 18 *These are in the 99th percentile (Top 1%) of injury crashes by location, # Injury crashes are a sum of KSI and non-KSI related injuries for vehicle only crashes at a location Vision Zero Crash Analysis (2016-2020) – City of Alexandria 15
All Crashes - 10 Years There is a downward trend for all crashes over the last ten years. Trend line R² -0.89 The strength of the trend is expressed through the R2 value. The closer the R2 value is to 1 or -1 the stronger the trend. Positive R 2values indicate an upward trend, negative Rvalues indicate a downward trend, and zero indicates a flat trend.
Vision Zero is a strategy to eliminate all traffic fatalities and severe injuries, while increasing safe, healthy, equitable mobility for all. In creating a Vision Zero Action Plan, stakeholders should understand, acknowledge, and discuss how Vision Zero differs from the traditional approach to traffic safety: Any Vision Zero Action Plan must .
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