| Title | Rural Speed Safety Project for USDOT Safety Data Initiative: Summary Report |
|---|---|
| Record ID | 73576 |
| Personal Name Creator |
Das, Subasish; Geedipally, Srinivas; Avelar, Raul; Wu, Lingtao; Fitzpatrick, Kay; Banihashemi, Mohamadreza; Lord, Dominique |
| Corporate Creator | Texas A & M Transportation Institute |
| Corporate Contributor |
United States. Department of Transportation. Office of the Assistant Secretary for Transportation Policy |
| Publisher | Texas A&M Transportation Institute |
| Publication Date | 20200301 |
| Language | English |
| Abstract | The objective of this project was to examine prevailing operating speeds on a large scale to determine how speed and speed differentials interact with roadway characteristics to influence the likelihood of crashes. The project team conducted three major tasks: (a) developed conflated databases for Ohio and Washington by incorporating the Highway Safety Information System (HSIS) and the National Performance Management Research Data Set; (b) developed static and interactive data visualization tools to show the association between operating speed measures and safety outcomes; and (c) developed best-fit models at annual and daily levels to address the impact of operating speed on safety. The overall finding was that speed-related operational information is an area of opportunity to better understand safety outcomes. This pilot project established the framework of data conflation and an analytical pipeline that will help to address the effect of operation speed measures on safety. The replicability procedure developed in this study can be applied to other HSIS States. The project team developed a weblink that includes descriptive statistics and data visualization tools (both static and interactive). The links provide a more detailed view of the speed measures and descriptive statistics, as well as visualization of the association between speed measures and crashes at a granular level. The team members also developed an interactive decision support tool (https://ruralspeedsafety.shinyapps.io/rss_sdi/) to show annual risk scoring using Washington and Ohio data that contain expected total crashes from the developed models. |
| Public Note | Projects were performed with the cooperation and participation of the Federal Highway Administration. The related dataset is available at: https://doi.org/10.21949/1519283 |
| Rosap ID | dot:48840 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/48840 |
| TRT Terms | Rural highways; Traffic crashes; Operating speed; Traffic characteristics; Crash causes; Crash data; Visualization; Datasets |
| General Subjects | Rural roadways; roadway characteristics; safety performance functions; datasets |
| Geographical Coverage |
Ohio; Washington |
| TRIS Online Accession No |
1783555 |
| Contract Number | DTFH6116D00039L |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/73000/73500/73576/Rural_Speed_Safety_Summary_Report__002_.pdf |
| Alternative URL | https://ntlrepository.blob.core.windows.net/lib/73000/73500/73576/Rural_Speed_Safety_Executive_Summary_Report__003_.pdf |
| Format | |
| Database | NTL Digital Repository |