| Title | Implementation of the Revised Safety Impact Methodology Tool |
|---|---|
| Record ID | 80656 |
| Personal Name Creator |
Yanagisawa, Mikio; Razo, Michael; Fairley, Gerard T.; Najm, Wassim G |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Vehicle Safety Research |
| Publisher | United States. Department of Transportation. National Highway Traffic Safety Administration |
| Publication Date | 20210501 |
| Language | English |
| Abstract | The Safety Impact Methodology (SIM) software tool is a suite of simulation modules designed to assess the safety effectiveness of crash avoidance systems based on cooperative vehicle-to-vehicle (V2V) communications and/or vehicle-based sensors such as radar. The tool uses a Monte Carlo simulation approach to estimate reductions in crashes and crash severity for specific pre-crash scenario types. The output of the SIM tool can be combined with external data on exposure and occupant injury to support analysis of overall harm reduction. The SIM tool uses an incremental time-step approach to model linear motion, turning movements, driver reactions, and warnings/actions from the crash avoidance system. Each module configures the simulation engine to address a specific type of pre-crash scenario, with a wide array of user-configurable parameters. The SIM tool implements pre-crash scenarios that are addressed by the V2V-based forward crash warning, intersection movement assist, left turn assist, blind spot/lane change warning, do not pass warning, and emergency electronic brake light safety applications. The tool also has the capability to simulate other priority pre-crash scenarios and applicable safely applications, such as drifting into opposite direction travel lanes. This report details the mathematical and computational basis for the SIM tool, including assumptions, theory of operation, kinematic equations, and detailed specifications of pre-crash scenarios. |
| Rosap ID | dot:55728 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/55728 |
| TRT Terms | Vehicle to vehicle communications; Crash analysis; Light vehicles; Monte Carlo method; Simulation; Benefits; Safety factors; Impacts; Crash characteristics; Crash severity; Crash avoidance systems; Highway safety |
| General Subjects | kinematic; system effectiveness; safety impact methodology |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1774103 |
| Contract Number | Inter-Agency Agreement DTNH22-13-V-00106 HS63A4 |
| Report Number | DOT HS 812 890 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/80000/80600/80656/14605-SIM_Tool_Implementation_Revised_050521_v3_tag.pdf |
| Format | |
| Database | NTL Digital Repository |