ats-16: making data count, anthony buczek

• Data analysis of serious crash patterns, factors

• Recommend strategies to address the patterns found

• Safety Workgroup provided guidance, peer review

Regional Transportation Safety Planand State of Safety Report

Anthony Buczek, PE, PTOETransportation Engineer

National & International context

2

Oregon

3

Percent Decrease in Road Fatalities, 2000-2012

• Vision Zero / Safe System / Sustainable Safety National Policy• Courtesy: Chris Monsere, PhD, PE

• States that drive more see more fatalities

State-by-State

4

• Surface streets with more congestion have lower serious crash rates

• Likely due to speed

Safety and Congestion

5

• Wider roads are disproportionately represented

Number of Lanes

6

• Increased VMT more exposure more crashes• Uncongested conditions speed less safe• Wider roads less safe

Some factors that Influence Safety(all else being equal)

7

OHP (V/C)RTP Mobility Target

Local LOS Standards

Reduce congestion

Widen roadways

Discourage dense walkable places, encourage auto-oriented places

Policy1st-orderoutcome

The relationship between Oregon’s mobility policy and safety

8


Local LOS Standards

Reduce congestion

Widen roadways

Induce demand, increase VMT



2nd-orderoutcome


Less congestion

8


Local LOS Standards

Reduce congestion

Widen roadways





2nd-orderoutcome


Less congestion

Wider roads

8


Local LOS Standards

Reduce congestion

Widen roadways




Longer trips, increase VMT


2nd-orderoutcome


Less congestion

Wider roads

Discourage biking and walking,

increase VMT

8


Local LOS Standards

Reduce congestion

Widen roadways





More fatal and serious injury crashes2



2nd-orderoutcome

Safetyoutcome


Sources:1 – Higher VMTs correlate with higher fatal and serious injury crash rates. Sources: NHTSA, Metro State of Safety report2 – Higher levels of congestion correlate with lower fatal and serious injury crash rates, likely due to speed. Source: Metro State of Safety report3 – Roads with more traffic lanes have higher rates of fatal and serious crashes per mile travelled. Sources: AASHTO HSM, Metro State of Safety report

Less congestion

Wider roads


increase VMT

8


Local LOS Standards

Reduce congestion

Widen roadways










2nd-orderoutcome

Safetyoutcome



Less congestion

Wider roads


increase VMT

8


Local LOS Standards

Reduce congestion

Widen roadways











2nd-orderoutcome

Safetyoutcome



Less congestion

Wider roads


increase VMTMore fatal and serious

injury crashes1

8


Local LOS Standards

Reduce congestion

Widen roadways











2nd-orderoutcome

Safetyoutcome



Oregon’s mobility policies require the development of a transportation system thatincreases the risk of fatal and injury crashes.

Less congestion

Wider roads


increase VMTMore fatal and serious

injury crashes1

8

16

Safety reports available at www.oregonmetro.gov/safetyCrashMap at crashmap.oregonmetro.gov

For more information, contact:Anthony Buczek, PE – [email protected]

http://www.oregonmetro.gov/safety

mailto:[email protected]

ats-16: making data count, anthony buczek

Government & Nonprofit