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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

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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 PART I: CRASH TRENDS AND LOCATIONS

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

INTRODUCTION

  • 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.

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

REGIONAL SAFETY STUDY – PART I

  • Topics Covered in Part I:
  • Regional Safety Trends
  • Crash Characteristics
  • Crash Locations
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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

5,000 10,000 15,000 20,000 25,000 30,000 35,000

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

Total Annual Traffic Crashes

REGIONAL SAFETY TRENDS

HAMPTON ROADS ANNUAL TRAFFIC CRASHES, 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.

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

REGIONAL SAFETY TRENDS

20 40 60 80 100 120 140 160 180 200

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

Total Annual Traffic Crash Fatalities

HAMPTON ROADS ANNUAL TRAFFIC CRASH FATALITIES, 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.

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH CHARACTERISTICS - FATALITIES

  • 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%
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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

  • 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.

CRASH LOCATIONS

SOUTHSIDE CRASH LOCATIONS

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH LOCATIONS - FREEWAYS

  • 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.

Freeway Crash Severity Rate

= Annual PDO Crashes + 3 x Annual INJ crashes + 12 x Annual FAT crashes 1,000,000 x (

)

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

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH SEVERITY RATE - FREEWAYS

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH SEVERITY RATE - FREEWAYS

4 2 5 1 3 8 10 9 6

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH LOCATIONS – ARTERIAL INTERSECTIONS

  • 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.

Intersection Crash Severity Rate = Annual PDO Crashes + 3 x Annual INJ crashes + 12 x Annual FAT crashes 1,000,000 x (

)

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

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

NUMBER OF CRASHES - INTERSECTIONS

4 2 3 10

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

NUMBER OF CRASHES - INTERSECTIONS

7 5 1 8 9 6

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH SEVERITY RATE - INTERSECTIONS

10 4 2 3 5 7 9

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

CRASH SEVERITY RATE - INTERSECTIONS

1 8 6

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

SAFETY STUDY – PART 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
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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

  • 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).

SAFETY STUDY – PART II

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HAMPTON ROADS REGIONAL SAFETY STUDY – 2013 UPDATE PART I: CRASH TRENDS AND LOCATIONS

  • 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

SAFETY STUDY – PART II

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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 PART I: CRASH TRENDS AND LOCATIONS