Purpose and Scope
The Crash Report schema describes the information recorded at the time of the crash (not the information which may be linked to the report after the crash).
The schema will be based on extensive prior work, including the Model Minimum Uniform Crash Criteria (MMUCC), the FARS reporting requirements, and ANSI D20 and D16. The schema will be developed in cooperation with the Association of Traffic Safety Information Professionals (ATSIP) and the Iowa DOT-sponsored TraCS consortium (this latter group anticipates a NHTSA-funded project to develop a similar schema, but the timing of this effort is uncertain.)
This schema will be developed in conjunction with the Highway Information Safety Analysis Schema in order to reflect the fact that some highway characteristics are not typically available in inventory systems at the level of spatial or temporal accuracy required to allow for linking with the crash record (and the fact that agencies face a host of other issues in successfully linking highway data to crash records). Therefore, development of requirements for this schema will consider the following important items for crash analysis, liability investigation and maintenance planning:
· width of the clear area
· topography – width and slope of embankment and cut section
· type of barrier struck and the degree of damage it sustained.
Base Schema/ Standards
Existing schema and/or standards that this will be based on include:
· Model Minimum Uniform Crash Criteria (MMUCC)
· FARS reporting requirements
· ANSI D20 and D16
· JusticeXML
Resource Documents
· Model Minimum Uniform Crash Criteria Guideline, Second Edition (2003) http://www.mmucc.us/2003MMUCCGuideline.pdf
· ANSI Standard D20-2003 Data Element Dictionary for Traffic Records Systems, American Association of Motor Vehicle Administrators, April 2003 http://www.aamva.org/Documents/std2003_ANSI_DICTIONARY_FINAL.pdf
· ANSI Standard D16.1-1996 Manual on Classification of Motor Vehicle Traffic Accidents, Sixth Edition. http://www.nsc.org/public/mem/ansid16_1.pdf
· 2004 Fatal Accident Reporting System Coding and Validation Manual, NHTSA. ftp://ftp.nhtsa.dot.gov/fars/FARS-DOC/
· Transportation Safety Information Management System, Phase I Consolidated Report, prepared by Littleton PRC, June 2001. http://tsims.aashtoware.org/ContentManagement/PageBody.asp?PAGE_ID=5&TAB_ID=8
· JusticeXML Schema. http://it.ojp.gov/jxdm/3.0/index.html
· Report Definition Language Specification, 3rd draft, Microsoft Corporation, 2003 http://download.microsoft.com/download/4/7/d/47d7d117-9f91-49ad-98d5-46aa6f3251a8/RDLDec03.pdf
Sample Applications
Many states have uniform crash reports and are in various stages of implementing electronic crash reporting systems; several of these states are already using XML. This will facilitate the development of the following applications to demonstrate the use of this schema:
· Develop web services that transfer and integrate crash records data (via XSLT) from two different existing crash records systems. These services will illustrate the effectiveness of on-the-fly data validation based on the element facets of the schema. Integrated crash records will reside in a data repository (constructed using Access, SQL Server or some other commercial database package), and will be made accessible via a web-based thin-client application.
· Develop XSLT and/or RDL (Report Definition Language) applications that produce sample “unified” reports of crash data (which might include data imported from a number of State systems) that are tailored for different types of users. At least one of these reports will be based around submissions required for Federal information systems such as NHTSA’s Fatal Accident Reporting System (FARS.) This application will illustrate the application of XML technologies in producing human-readable reports for distinct audiences from a single, common data set. The application will be integrated with, and made accessible via, the thin-client application described above.