SmartMapIntelligent Crash Location Tool

AASHTO GIS-T

San Diego

March 1999

Reg Souleyrette

Dan Gieseman

Center for Transportation Research and Education

Iowa State University

PC-ALAS

Crash Data Analysis in Iowa

DOS-Based Software

Link / Node System

Location / Vehicle / People

Crash Data Collected for All Roads

Officer Description of Crash

DOT Entry of Crash DataConvert Location Information to Link / Node

Paper Node Maps

High Potential for Error

Cumbersome / Obsolete

Crash Data Collection In Iowa

Paper Crash Report

Location Described by Literal Description

Complex Coding Scheme

Location Component of Officer’s Report

Sample from Node Map

Sample Location Worksheet

GIS-ALAS

Advantage SafetyElectronic data collection forms

Electronic submission

Data validation

Recent Developments

Arcview 3.0

Link / Node converted to spatial location

Functionality of PC-ALAS coupled with GIS

Advantage SafetyLocation

Tool

Central Database

Courts Iowa DOT Other Agencies

The Vision for Safety Data Collection

Project Methodology

Refine Product

Deploy Application

Select Software to Fulfill Requirements

Development of the Crash Location Tool

Ascertain User Requirements

Design Initial Interface / Functionality

Obtain Feedback from Users

User Requirements

Find Locations using GPS

Find Locations using Street Name

Find Locations by Milepost / Route

Provide Feedback to Officer

The Crash Location Tool

Easy to Use

Improve Accuracy and Efficiency of Current Scheme

Compatible with Advantage Safety

Free to Distribute / Open Source

Software SelectedESRI MapObjects

Microsoft Visual Basic

Arcview Shape Cartography Data from Oracle

Distributed as a DLL

Initial Interface DesignAnswered many questions

Established capabilities and limitations of software

Provided a baseline

Refinement of the Location ToolFurther Simplified GUI

Enhanced underlying intelligence

Provided additional tools

Added additional map layers

User Interface Buttons

Main Map Window

Coordinate Information

The Location Tool User Interface

Crash Locate Tool

Pan Map

Zoom In/Out

Previous View

View Entire Map

The User Interface Buttons

Coordinate Finder Milepost Finder County Finder

Location Finding Tools

City Finder Intersection Finder

Milepost Marker

Nevada Corporate Limits

Fictitious Crash Location

Typical Methodology for Crash LocationStep 1 - Zoom In to Scene

Snap Location

Typical Methodology for Crash LocationStep 2 - Locate Specific Location

Regional Patrol Post Testing

Additional Enhancements

Adapt to Locate Other Incidents

Stand-Alone Version

GIS Coverage Automation

Further GPS Integration

Next steps for the Location Tool?