usrap: an innovation in data-driven safety analysis · 2016-08-29 · – manual crash reports but...
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usRAP: An Innovation in Data-Driven Safety AnalysisPresented by: Bruce Hamilton, Roadway Safety Foundation
Doug Harwood, MRIGlobal
Est. Dec. 2014
Webinar Logistics
• Duration is 11:00 AM - 12:30 PM Mountain
• Webinar – recorded and archived on website. For quality of recording, phone will be muted during presentation
• If listening on the phone, please mute your computer
• To maximize the presentation on your screen click the 4 arrows in the top right of the presentation
• At the end of each section, there will be time for Q&A
• There is a handout pod at the bottom of the screen
• Please complete follow-up surveys; they are vital to assessing the webinar quality
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Today’s Presenters
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Bruce HamiltonRoadway Safety Foundation
Doug HarwoodMRIGlobal
Once you have completed this webinar, you will:
Goals of this Webinar
Have an understanding of the U.S. Road Assessment Program (usRAP) including the core protocols and how these apply to improving safety on rural roadways.
To achieve the webinar goal, you will learn to:
Learning Outcomes
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Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
Bruce Hamilton,Roadway Safety Foundation
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Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
usRAP Objectives
• Focus on reducing risk of fatal and serious injury crashes
• Assure that highway safety improvement programs are based on rational assessment of risk
usRAP Objectives
• Work cooperatively with highway agencies• Benchmark safety of road segments• Allocate resources based on risks InfrastructureEnforcement
• Inform and provide guidance to motorists• Foster collaboration
• usRAP established in 2004 by the AAA Foundation for Traffic Safety
• Modeled on successful EuroRAP and AusRAP programs
ROAD ASSESSMENT PROGRAMS
• 2000 - EuroRAP• 2003 - AusRAP• 2004 - usRAP• 2005 - iRAP
• iRAP is a not-for-profit organization based in the U.K.• iRAP was established in 2005 to help coordinate the
EuroRAP, AusRAP, and usRAP programs• iRAP also took on a mission to apply RAP protocols in
low- and middle-income countries• RAP programs are now active in over 70 countries• iRAP Global Technical Committee (GTC) assures
technical quality of RAP protocols and tools
usRAP Sponsor
• Roadway Safety Foundation– 501c3 in Washington, DC dedicated to promoting
road design improvements, safe roadsides, and enhanced operating conditions
– Through cooperative agreement with Federal Highway Administration, promotes usRAP as appropriate tool for data-driven safety analysis in Every Day Counts 3
– Contact: Bruce Hamilton ([email protected])
• iRAP vision: “A World Free of High-Risk Roads”• Engineering/design vital in Toward Zero
Deaths/Vision Zero efforts– “Not all E’s created equal”– Can’t educate our way to Zero:
• Ambitious goals call for ambitious plans• We need to design out risk & create cultural shift
usRAP and Rural Roads
• State DOTs have solid crash data, but locals often don’t…
• And 75% of the nation’s road mileage is under local control!
• usRAP can be used anywhere, but is an especially value-added resource where:– Crash data is lacking or unreliable (often local/rural)– Hazard potential is high (2-lane rural highways)– VMT is so low that the truly risky design of a road
doesn’t become evident in crash patterns (rural)
usRAP and Rural Roads
Directing Your Questions via the Chat Pod
1. Chat pod is on left side of screen between attendees pod & closed
caption pod
2. Type your question or
comment here
3. Answers will appear here unless addressed
verbally
Doug Harwood,MRIGlobal
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Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
• MRIGlobal – Kansas City, MO• Iowa State University – Ames, IA• University of Kentucky – Lexington, KY• For technical assistance and support contact:
Doug Harwood ([email protected])
usRAP Team
usRAP Protocols
• Risk Mapping • Performance Tracking• Star Ratings• Safer Roads Investment Plans
• NOTE: All based on fatal and serious injury crashes
What is a Safer Roads Investment Plan?
• Safer Road Investment Plan: A plan that suggests specific safety improvements at specific locations on a selected roadway network
• Input Data: Approximately 50 roadway and traffic characteristics for each 300-ft (100-m) segment of the roadway network
• Processing Software: web-based ViDA software
• Output: a safety improvement plan for your road network
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What Does a Safer Roads Investment Plan Include?
• Safer roads investment plan for a road network includes:– Specific countermeasures to be implemented– Specific implementation locations – Quantitative cost estimates– Quantitative safety benefits (in crashes reduced and
dollars)– Cost-effectiveness measures– Benefit-cost ratios– All countermeasures meet a minimum benefit-cost ratio
specified by the user– Output in the form of tables, maps, and Excel
spreadsheets
How Can a Safer Roads Investment Plan Help Your Agency?
• Plan focuses attention of the priority locations for safety improvement on your road system and the appropriate type of safety improvement(s) for each location
• Requires a 30-minute investment in input data coding per mile of road
• All results are based on benefit-cost analysis—only improvements that meet a minimum benefit-cost ratio that you specify are suggested
ViDA Software• Performs network-level safety planning analysis
to provide a safer roads investment plan• Web-based and easily accessed on-line• Free software use for all highway agencies and
their consultants• Uploads and processes input data for most
roadway systems within a few minutes• Displays results on-screen and in downloadable
Microsoft Excel® files• No detailed site-specific crash data needed• Network-wide crash data is useful for calibration
Who Can Benefit Most from Safer Roads Investment Plans?
• Highway agencies without good crash data– No crash data available– Manual crash reports but no automated data files– Automated crash data files, but no location data other than
verbal descriptions • Highway agencies without good crash analysis
systems• Highway agencies with good road inventory data• Highway agencies with video coverage of its road
system– In the age of Google Street View® and Bing Streetside®,
that’s almost everyone
usRAP Analysis Process
Coded Roadway Attribute Data
Safer RoadInvestment Plans
Road Safety Scores Star Ratings
STAR RATINGS
Star Ratings
• Star ratings have been used since the inception of RAP programs
• Star ratings are assigned based on presence or absence of road design and traffic control features related to safety
• Over 50 safety-related design and traffic control features are considered
• Star ratings are in 1 to 5 scale:– 5-star road (full range of known safety-related design and
traffic control features)– 1-star road (limited safety-related design and traffic control
features)
Star Ratings
• Separate star ratings by user type:– Vehicle occupants– Motorcyclists– Pedestrians– Bicyclists
Key Safety-Related Roadway Characteristics
• No. of lanes• One-way/two-way• Roadway width/lane width• Shoulder width• Horizontal alignment (esp. curve radius)• Vertical alignment (esp. grades)• Delineation• Road surface condition• Sidewalks
Key Safety-Related Roadway Characteristics
• Roadside severity• Shoulder rumble strips• Access point density• Median type• Intersection type• Pedestrian facilities• Bike facilities• Area type (rural/semi-urban/urban)• Land use (commercial/residential)
Key Safety-Related Roadway Characteristics
• Quality of curve• Quality of intersection• Quality of pedestrian crossing
Key Operational and Traffic Control Characteristics
• Traffic volume• Motorcycle percentage• Pedestrian flow• Bicycle flow• Intersecting road volume• Speed limit• 85th percentile traffic speed
Example of Coded Roadway Data File
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Road Photos Are Used for Attribute Coding
Example of Coding Tool for Safety-Related Road Attributes
Road Safety Scores
Vehicle occupantsRun off road
Head onIntersection
Run off roadHead on
Intersection
AlongAcross
AlongAcross
Intersection
Motorcyclists
Pedestrians
Bicyclists
Risk factorsRisk factorsRisk factors
Risk factorsRisk factorsRisk factors
Risk factorsRisk factorsRisk factors
Risk factorsRisk factors
Road users Crash types Road attributes
Road Safety Scores
Vehicle occupants
Run off road
Head on
Intersection
SpeedRoadside severity – left
Roadside severity – rightLane width
Paved shoulderCurvature
Curvature qualityDelineation
Shoulder rumbleRoad condition
Road users Crash types Road attributes
SpeedMedian type
Number of lanesLane widthCurvature
Curvature qualityOvertaking demand
Road condition
SpeedIntersection type
Intersecting road volumeIntersection quality
Minor access density
Road Safety Scores
Along
Across
Pedestrians
SpeedSidewalk provision – left
Sidewalk provision – rightSide friction
SpeedNumber of lanes
Median typeCrossing facilities
Crossing facilities quality
Road users Crash types Road attributes
Road Safety Scores
Along
Across
Intersection
Bicyclists
SpeedRoadside severity – left
Roadside severity – rightLane width
Paved shoulderCurvature
Curve qualityDelineation
Road conditionFacilitates for bikes
Side friction
SpeedCrossing facilitiesNumber of lanes
Median typeCrossing facilities
Crossing facilities quality
SpeedIntersection type
Intersecting road volumeIntersection quality
Minor access density
Road users Crash types Road attributes
Star Rating/Crash RelationshipsAll F&S Injury Crashes/100 MVMT for All 2U Roadways
Star Rating Based on Individual Locations
All area types; groups with 10+ mi only
All
F&S
Inju
ry C
rash
es/1
00 M
VM
T
0
5
10
15
20
25
Car Star Rating for Individual Locations
1 2 3 4 5
17.8
8.4
5.7 4.8
Summary of Star Ratings for a Road Network
Car Users Motorcycle Users Bicycle Users Pedestrian Users
Star Rating Length (km's) % Length (km's) % Length (km's) % Length (km's) %
0 mi 0% 26 mi 7% 0 mi 0% 1 mi 0%
10 mi 3% 6 mi 2% 9 mi 2% 9 mi 2%
100 mi 27% 24 mi 6% 25 mi 7% 326 mi 88%
164 mi 43% 114 mi 30% 204 mi 55% 24 mi 6%
100 mi 27% 164 mi 44% 136 mi 36% 0 mi 0%
0 mi 0% 40 mi 11% 0 mi 0% 14 mi 4%
TOTAL 374 mi 100% 374 mi 100% 374 mi 100% 374 mi 100%
Example of Star Rating Variation Along a Road Section
SAFER ROADS INVESTMENT PLANS
Safer Roads Investment Plans
• Site-specific plan for cost-effective safety improvements
• Includes safety improvements for an entire road network
• Developed from same database as star ratings• Based on road attributes without the need for
detailed site-specific crash data• Network-wide crash data can be used for
calibration• No other comparable tool is available
Safer Roads Investment Plans
• Considers over 70 countermeasures• Each countermeasure is reviewed for each 300-
ft (100-m) road segment.• A countermeasure is “triggered” if it makes
engineering sense for the location• Once a countermeasure is “triggered” economic
analysis is performed
Safer Roads Investment Plans
• Countermeasures are incorporated in the plan for a given 300-ft (100–m) road segment if:– countermeasure is not already installed– BCR exceeds minimum BCR specified by the user– countermeasure is compatible with other cost-
effective countermeasures for the same location– countermeasure is not overridden by a mutually
exclusive countermeasure for the same location that is more cost-effective
– countermeasure is consistent with countermeasures recommended for adjacent road segments
Safer Roads Investment Plans
• All analyses are based on consideration of fatalities and serious injuries
• Serious injuries are defined as Levels 3 through 5 on the Maximum Abbreviated Injury Scale (MAIS)– corresponds to A injuries and all or most B injuries on
the KABCO scale• Ratio of serious injuries to fatalities can be
based on actual crash data, where available
Safer Roads Investment Plans
• User provides data or best available estimate for network-wide average fatalities per year
• Program logic decides how to allocate those crashes to the various road segments on the network
• Results can be reviewed/verified with download file
Directing Your Questions via the Chat Pod
1. Chat pod is on left side of screen between attendees pod & closed
caption pod
2. Type your question or
comment here
3. Answers will appear here unless addressed
verbally
Doug Harwood,MRIGlobal
49
Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
Live Demonstration of usRAP Analysis Software
Directing Your Questions via the Chat Pod
1. Chat pod is on left side of screen between attendees pod & closed
caption pod
2. Type your question or
comment here
3. Answers will appear here unless addressed
verbally
Bruce Hamilton,Roadway Safety Foundation
52
Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
Summary of usRAP
• Acknowledged by FHWA as a tool for data-driven safety analysis
• Applicable to ANY road/network, with special value in rural areas and for agencies without robust crash data
• Supported by global body of research and technical expertise
How to Pursue a usRAP Project
• We want to work with you!– Step 1: Reach out to us (contact info at the end)– Step 2: Get trained (next opportunity: July) – Step 3: Conduct a project & submit data for validation
= accreditation as a provider• Software: www.vida.irap.org
FREE Training Opportunity
• July 27-28, Salt Lake City, UT
• Registration is free and open to all
• Attendees will receive preliminary accreditation
• Distance-learning trainings coming in the future
Directing Your Questions via the Chat Pod
1. Chat pod is on left side of screen between attendees pod & closed
caption pod
2. Type your question or
comment here
3. Answers will appear here unless addressed
verbally
In this webinar, you have learned to:
Learning Outcomes
Identify usRAP’s function and unique value in safety analysis
Understand the application of the ViDA software in generating star ratings & safer road investment plans
Use the ViDA software through a demonstration
Pursue a usRAP project in order to meet data-driven safety analysis needs in rural areas
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Upcoming 2016 Webinars
Roundtable on the Public Health Side of Rural Transportation Safety
• Joe Marek, Clackamas County, OR Engineer
• Sallie Clark, El Paso County, CO Commissioner and NACo President
• Howard Hedegard, Injury Prevention Center, Children’s Hospital
• Robert Morones, Injury Prevention Program at Indian Health Service
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Wed. July 6, 2016 9:00-10:30 AM Mountain
Click here to register
Archived Webinars
Access the webinar archives
Training Videos
• What is the National Center for Rural Road Safety?
• Introduction to Road Safety Culture
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Watch these videos
National Working Summit on Transportation in Rural America
Save the Date:
September 7-9, 2016 Denver, CO
Registration now open and draft agenda is
available!!!!
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Learn more and register here
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[email protected] [email protected]
Contact Information
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