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PlanSafe NCHRP 8-44(02): Transportation Safety Planning: Forecasting the Safety Impacts in Socio-Demographic Changes and Safety Countermeasures. Ida van Schalkwyk Oregon State University [email protected] In cooperation with Dr. Simon Washington @ UC Berkeley Daehyun You @ ASU.

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Ida van schalkwyk oregon state university idavan engr oregonstate in cooperation with

PlanSafeNCHRP 8-44(02): Transportation Safety Planning: Forecasting the Safety Impacts in Socio-Demographic Changes and Safety Countermeasures

Ida van SchalkwykOregon State [email protected]

In cooperation with

Dr. Simon Washington @ UC Berkeley

Daehyun You @ ASU

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Overview

Overview

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Overview of nchrp 8 44 2

Need & Project Objectives

Overview of NCHRP 8-44(2)


The need

The Need

How do we incorporate safety into the long range transportation planning process?

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Nchrp 8 44 02 objectives

NCHRP 8-44(02) Objectives

September 11th, 2009 Oregon Transportation Summit in Portland, OR


What is plansafe

Background to the software tool

What is Plansafe?


Using plansafe

Using PlanSafe

Estimate effect of

  • Socio-demographic changes

  • Network related changes (volumes, large scale projects)

  • Engineering & behavioral countermeasures @ planning level

    on crashes @ the planning level

Changes at the area-level

Effect on safety?

E.g. increase population density

Impact on fatal & disabling injury crash severity?

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Using plansafe1

Using PlanSafe

  • Measure/estimate area-wide effects on crashes

  • Compare scenarios

    • Growth

    • Network changes

    • Future forecasts (demand models)

    • Area-wide countermeasure implementation

  • Planning level crash estimation

September 11th, 2009 Oregon Transportation Summit in Portland, OR


The plansafe software package

Tools within PlanSafe

The PlanSafe Software Package


The software package

The Software Package

Dataset preparation

Analysis/Prediction

PLANSAFEGIS Tool

  • INPUT DATA

  • GIS Shape Files (Polygon/Line/Point)

  • Census Data

PLANSAFE Main Tool

PLANSAFECensus Tool

FORECAST SAFETY

with/without countermeasure or different development scenarios at the planning level

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Plansafe main analysis tool

What can the PlanSafemain analysis tool do?

PlanSafe Main Analysis Tool


Compare crash outcomes for different growth scenarios

Compare Crash Outcomes for Different Growth Scenarios

a) Either import future transportation demand model information

Future Transportation Supply/Demand

PLANSAFE GIS Tool

Future Census Information

OR

b) Apply growth factor to target area to account for future growth

September 11th, 2009 Oregon Transportation Summit in Portland, OR


And or evaluate impact of countermeasure @ future point in time

And/Or – Evaluate Impact of Countermeasure @ Future Point in Time

@ Planning Level

  • PlanSafeincludes Countermeasure Effect Resource Table

    • STEP 1: Prepare Data

    • STEP 2: Identify Target Area

    • STEP 3: Select the countermeasure

      • From resource table (drop down menu); or

      • Add your own

    • STEP 4: Results!

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Example of information in plansafe countermeasure resource table

Example of information in PlanSafe Countermeasure Resource Table

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Predictive capabilities

Predictive Capabilities

Built-In SPFs

PlanSafe assess the goodness-of-fit of the built-in and provided models

Automatically select the best fitting model

Calibrate automatically

Provides results

  • KABCO crashes (All crashes)

  • KA crashes (Fatal & Incapacitating Injury Crashes)

  • KAB crashes (Fatal, Incapacitating & Non-Incapacitating Crashes)

  • Bicycle crashes

  • Pedestrian crashes

  • Deer crashes (some regions experience high proportions of deer/animal crashes)

But: you can add your own Safety Performance Functions

September 11th, 2009 Oregon Transportation Summit in Portland, OR


Ida van schalkwyk oregon state university idavan engr oregonstate in cooperation with

Results


Ida van schalkwyk oregon state university idavan engr oregonstate in cooperation with

Results


Supplemental tools

Helping you get the data ready for the PlanSafeAnalysis Tool

Supplemental Tools


Plansafe gis tool

PlanSafeSupplemental Tool

PlanSafeGIS Tool


Plansafe gis tool1

PlanSafe GIS Tool

Assigned in GIS to Study Areas (census block groups, TAZs, etc.)


Plansafe gis tool2

PlanSafe GIS Tool

Makes data preparation in ArcGISsuper easy

  • TAZ boundaries are often major roadways

  • Geospatial differences: roadways and boundaries don’t line up and if they do – where do they belong?

  • Crashes occur on roadways that form boundaries – where do they belong?

  • Agencies usually don’t have an intersection GIS layer


Plansafe census tool

PlanSafeSupplemental Tool

PlanSafeCensus Tool


When will plansafe be available

When Will PlanSafe be Available?

  • NCHRP 8-44(2) is wrapping up the project (product delivery will likely be within the next month)

  • Project Report and Product Submittal to NCHRP panel

  • Standard TRB process to release for public use


Key contacts

Key Contacts

  • TRB/ NCHRP

    • Rick Pain: [email protected], (202)334-2964

    • Chuck Niessner: [email protected], (202) 334-1431

  • NCHRP 8-44(2)

    • Principal Investigator: Simon Washington, [email protected], 510 643-1770

    • Predictive Modeling & Software Tool: Ida van Schalkwyk, [email protected]


The end or just the beginning

The End – Or Just the Beginning…


Questions

Questions?


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