Crash Reduction Analysis System Hub (CRASH) - Version 1.0

CRASH (Crash Reduction Analysis System Hub) is a web-based application developed for the Florida Department of Transportation (FDOT) Safety Office. The system runs on the FDOT Intranet and is designed to update and apply crash reduction factors (CRFs) for Florida. CRFs are used to estimate the expected reduction in crashes that will occur during a given period as a result of implementing a proposed safety improvement project.

CRFs are developed based on historical safety improvement projects. While FDOT maintains a comprehensive crash database for its state roadway system, it does not have a central database for safety improvement projects. Consequently, historical data for safety improvement projects are maintained separately at various district offices in various formats and are not easily accessible for developing CRFs and for other purposes. The development of CRASH provides a mean to systematically maintain safety improvement projects for CRF development and application.

CRASH was developed as a Microsoft ASP.NET web application that works with Microsoft ACCESS databases. The system in its initial version consists of the following four major database components:

1. Safety improvement projects since 1992.
2. Historical crash records from 1984 through 2003.
3. Crash reduction factors and associated statistics.
4. User management information.

1. Project Analysis: This functional component allows one to perform the following functions:
• Start New Project: To perform a new benefit-cost analysis for a project.
• Edit Projects: To make changes to one or more previously saved analysis projects.
• View Projects: To view one or more previously saved analysis projects.


2. Historical Projects: This functional component allows one to perform the following functions:
• Add Project: To enter information for an existing project of which analysis has been performed.
• Edit Projects: To add post-construction information for projects that have been completed or are under construction.
• View Projects: To view projects that have been completed or are under construction.
• Generate HSIP Report: To generate the standard Highway Safety Improvement Program (HSIP) report.
• Before-After Analysis: To generate before-and-after statistics for selected projects to evaluate their effectiveness.


3. Future Development: This functional component is reserved for future development in support of FDOT application of SafetyAnalyst, a new system currently under development by the Federal Highway Administration. For more information about the project, please visit the SystemAnalyst homepage at http://www.safetyanalyst.org



4. Administration: This functional component is mainly used by the system administrator or a designated person in the FDOT Central Office to perform the following functions:
• User Management: To manage usernames and passwords for access to various system components (for system administrator only).
• View CRFs: To view detailed summary statistics associated with the calculation of each crash reduction factor.
• Update CRFs: To update the crash reduction factors after the new project and data are added (for system administration only).
• Maintain Types: To add and edit safety improvement project types (for system administrator only).
• Assign Types: To review projects and assign improvement types to projects (for system administrator only).
• Append New Records: To append crash records from a new data year (for system administrator only).


5. Online Help: This functional component provides access to the CRASH online help, tabulated CRFs from other states, state-by-state CRFs, and the final report for the project that develops this web application.



6. Contact: This functional component lists contact information for technical support and general information on the system.