HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS Presented by: Keith Nichols, PE Citizens Transportation Advisory Committee January 9, 2014 Agenda Item #10 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 1 PART I: CRASH TRENDS AND LOCATIONS
I NTRODUCTION • In 2001 HRTPO initiated the Hampton Roads Regional Safety Study, a comprehensive analysis of highway safety throughout the region. • Since then, HRTPO released the Rural Safety Study and biennial updates to the General Crash Data and Trends report. • This is the first full update to the original Regional Safety Study. HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 2 PART I: CRASH TRENDS AND LOCATIONS
R EGIONAL S AFETY S TUDY – P ART I • Topics Covered in Part I: • Regional Safety Trends • Crash Characteristics • Crash Locations HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 3 PART I: CRASH TRENDS AND LOCATIONS
R EGIONAL S AFETY T RENDS 35,000 30,000 Total Annual Traffic Crashes 25,000 20,000 15,000 10,000 5,000 0 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 H AMPTON R OADS A NNUAL T RAFFIC C RASHES , 2000-2012 Source: HRTPO analysis of Virginia Department of Motor Vehicles (DMV) data. A reported traffic crash includes all crashes on public roadways that involve a fatality, injury, or estimated property damage of at least $1,500 according to the DMV. HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 4 PART I: CRASH TRENDS AND LOCATIONS
R EGIONAL S AFETY T RENDS 200 Total Annual Traffic Crash Fatalities 180 160 140 120 100 80 60 40 20 0 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 H AMPTON R OADS A NNUAL T RAFFIC C RASH F ATALITIES , 2000-2012 Source: HRTPO analysis of Virginia Department of Motor Vehicles (DMV) data. Data includes all fatalities resulting from injuries suffered in traffic crashes that occur within 30 days of the crash according to the DMV. HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 5 PART I: CRASH TRENDS AND LOCATIONS
C RASH C HARACTERISTICS - F ATALITIES • Percentage of traffic crash fatalities in Hampton Roads involving each of the following characteristics: • Alcohol usage – 39% • Speeding – 35% • Not using safety belts – 55% • Bicyclist/Pedestrian – 16% • Motorcyclists – 14% HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 6 PART I: CRASH TRENDS AND LOCATIONS
C RASH L OCATIONS • Raw crash data was obtained from VDOT and DMV for the years 2009-2012. • HRTPO staff performed separate analyses for freeways segments and arterial intersections. S OUTHSIDE C RASH L OCATIONS HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 7 PART I: CRASH TRENDS AND LOCATIONS
C RASH L OCATIONS - F REEWAYS • Crashes were analyzed for the entire regional freeway system as part of this study. • Freeway segment comparisons were done using the crash severity rate , which accounts for the number of crashes, the severity of crashes, and the exposure to crashes based on traffic volumes and segment length. Annual PDO Crashes 1,000,000 x ( ) + 3 x Annual INJ crashes Freeway Crash = + 12 x Annual FAT crashes Severity Rate 365 x Annual Average Daily Traffic (AADT) x Segment Length PDO crashes are those with property damage only INJ crashes are those with at least one injury but no fatalities FAT crashes are those with at least one fatality HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 8 PART I: CRASH TRENDS AND LOCATIONS
C RASH S EVERITY R ATE - F REEWAYS 7 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 9 PART I: CRASH TRENDS AND LOCATIONS
C RASH S EVERITY R ATE - F REEWAYS 6 4 9 3 2 10 5 1 8 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 10 PART I: CRASH TRENDS AND LOCATIONS
C RASH L OCATIONS – A RTERIAL I NTERSECTIONS • 597 intersections throughout Hampton Roads were included in this safety analysis, based on their inclusion in the CMP roadway network. • Includes all crashes within 250’ of the intersection. • Arterial intersection comparisons were done using both the annual average number of crashes and the crash severity rate . Annual PDO Crashes 1,000,000 x ( ) Intersection + 3 x Annual INJ crashes = Crash + 12 x Annual FAT crashes Severity Rate 365 x Annual Average Daily Vehicles Entering Intersection PDO crashes are those with property damage only INJ crashes are those with at least one injury but no fatalities FAT crashes are those with at least one fatality HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 11 PART I: CRASH TRENDS AND LOCATIONS
N UMBER OF C RASHES - I NTERSECTIONS 10 3 2 4 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 12 12 PART I: CRASH TRENDS AND LOCATIONS
N UMBER OF C RASHES - I NTERSECTIONS 9 1 6 8 5 7 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 13 13 PART I: CRASH TRENDS AND LOCATIONS
C RASH S EVERITY R ATE - I NTERSECTIONS 3 2 9 5 10 7 4 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 14 PART I: CRASH TRENDS AND LOCATIONS
C RASH S EVERITY R ATE - I NTERSECTIONS 8 1 6 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 15 PART I: CRASH TRENDS AND LOCATIONS
S AFETY S TUDY – P ART II • Part II of the Hampton Roads Regional Safety Study – 2013 Update will build on the Part I report by addressing roadway safety improvements. • Examples of efforts to improve roadway safety: • Highway Safety Improvement Program (HSIP) funding • Educational and Enforcement Efforts • Virginia Strategic Highway Safety Plan • General crash countermeasures HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 16 PART I: CRASH TRENDS AND LOCATIONS
S AFETY S TUDY – P ART II • New research recommends determining the most hazardous locations by looking at the difference between: • The number of observed crashes (“expected”), and • The typical number of crashes (“predicted”) • This difference between the number of “expected” and “predicted” crashes is referred to as the Potential for Safety Improvement (PSI). HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 17 17 PART I: CRASH TRENDS AND LOCATIONS
S AFETY S TUDY – P ART II • HRTPO staff will analyze and recommend safety improvements for those locations with the highest Potential for Safety Improvement using: • Intersection summaries • Collision Diagrams • Site Observations • Analysis of Possible Countermeasures HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 18 18 PART I: CRASH TRENDS AND LOCATIONS
HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS Presented by: Keith Nichols, PE Citizens Transportation Advisory Committee January 9, 2014 HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE 19 19 PART I: CRASH TRENDS AND LOCATIONS
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