The Connecticut Roadway Safety Management System (CRSMS) is a data-driven, enterprise-level web application developed for the Connecticut Department of Transportation to implement the latest Highway Safety Manual (HSM) methods. The six-step safety management process as recommended in the HSM includes network screening, diagnosis, countermeasure selection, economic appraisal, project prioritization, and safety effectiveness evaluation.
The CRSMS is composed of a data management module and six analytic modules from network screening to safety effectiveness evaluation.
The Network Screening module integrates maps and allows identifying locations with the highest potential for safety improvements. The Diagnosis module includes a variety of tools – crash map, tabular data, summary statistics, crash trees, collision diagrams, and site condition view – for users to identify potential factors that contribute to the crash patterns.
Countermeasure Selection incorporated the latest countermeasures and CMF data from the national CMF Clearinghouse. Economic Appraisal allows users to quantitatively assess the benefits and costs of proposed projects, compare between solutions, and select the most economically promising projects.
Creating competing solutions and adding multiple countermeasures to individual solutions are supported. Project Prioritization enables automatic prioritization and optimization of economically justified projects within specified budget limits. Safety Effectiveness Evaluation provides convenient means to evaluate the effectiveness of projects at different levels – project level, countermeasure level and program level. The results are presented in terms of total crash reduction, severe crash reduction, benefit/cost ratio and shifts of proportions for certain types of crashes, with and without the projects.
The team is further advancing the safety analysis capabilities of the CRSMS, to improve the data-driven decision-making processes and to reduce transportation-related fatalities and severe injuries in the state towards zero. Particularly, the team is working to incorporate the systemic safety analysis and behavior analysis, update the functionalities based on the upcoming new edition of the HSM, complete the statewide intersection inventory and incorporate the CRSMS with project financial tracking systems to assess the effectiveness of safety projects.