OnSafety™ Crash GeoLocator

Save Time and Reduce Errors: Geolocate up to 95% of Your Crashes Automatically

The OnSafety™ Integrated Solution contains an automated GeoLocator utility (Crash ETL Component). The GeoLocator automatically locates crashes for use in a Geographic Information System (GIS). When implemented properly, the system can raise the accuracy of crash locations to an optimal 95% hit rate.

Implementing the New System Isn’t Overly Complicated

The OnSafety™ GeoLocator solution basically takes raw crash data and automatically determines coordinates for each crash. The solution utilizes sophisticated techniques to rapidly process data using a four step method. These steps include: Classify, Parse, Scrub, Match, Geo-Location.


The Classify Tool interrogates crash data to determine the reference method most likely used to locate the crash. Currently supported methods include milepost offset, intersection offset, ramp, crash, and address. Others may be added with ease.


The Parse Tool uses pattern recognition to identify pertinent elements of the road description and related data elements to identify the core road name, suffix, prefix, and other data elements. It is also used to construct uniform ramp names and to correctly identify mile marker and offset values.

Automatically Correct All Types of Referencing Errors


The process also performs a robust scrubbing of the data to remove unwanted data and to replace non-standard terms with standard values. In addition, the process performs a spell check on the core road names against a master street list to generate the correct road name.

Edit and Customize Dictionaries for Your Agency’s Needs


The matching utility performs an extensive process to match pairs of crash route names to pairs of map route names. The system will match both primary and alias names, as well as suffixes and suffix alternatives; substrings, soundex, and spelling matches are also found. This process provides a matching score and identifies the correct intersection or ramp of each crash site.


The GeoLocator™ utility uses the matched crash data to accurately compute a set of linear reference coordinates along a roadway. This tool takes into consideration many anomalies that can exist in the road network, including equation locations, duplicate intersections, name changes, feet/miles errors, compass vs. cardinal direction, and others.

Conveniently Manage Your Crash Location Solution

Web and Desktop Access

The OnSafety™ GeoLocator solution can be managed through multiple client systems including client desktop GIS, .net Client systems, and even web access.

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