6.2.1 Overview
A variety of tools have been developed to help practitioners implement safety analysis. This section provides an overview and introduction to the following safety analysis tools:
- HSM Spreadsheets;
- IHSDM;
- ISATe;
- SPICE;
- HSS; and
- Other TxDOT-specific tools such as SSTs
The data requirements and level of effort to operate these safety analysis tools varies greatly depending on the tool and facility types being analyzed. In general, the data requirements to perform the HSM Part C predictive method are located in the various Part C chapters within the HSM. summarizes the applications of the various safety analysis tools. It shows the gaps of certain tools in analyzing certain facilities. Qualitative safety analysis such as field visits and RSAs are described under Section 1 of this chapter. The following sub-sections provide an overview of the various quantitative safety analysis tools.
Tools | Application | |||||
|---|---|---|---|---|---|---|
HSM Predictive Analysis (SPF-based) | HSM Predictive Analysis (CMF-based) | Rural Roadways | Urban Roadway | Ramps and Freeways | Intersection Evaluations | |
HSM spreadsheets | ✓ | ✓ | ✓ | ✓ | ||
IHSDM | ✓ | ✓ | ✓ | ✓ | ✓ | |
ISATe | ✓ | ✓ | ||||
SPICE | ✓ | ✓ | ||||
HSS | ✓ | ✓ | ✓ | ✓ | ✓ | |
TxDOT-specific tools | ✓ | ✓ | ✓ | ✓ | ||