Developing and Validating a Model of Left-Turn Crashes to Support Safer Design and Operations

Davis, Gary A.; Gao, Jingru; Mudgal, Abhisek; University of Minnesota. Dept. of Civil, Environmental, and Geo-Engineering; Texas Transportation Institute

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Developing and Validating a Model of Left-Turn Crashes to Support Safer Design and Operations

2018-09-01
By Davis, Gary A. ; Gao, Jingru ; Mudgal, Abhisek

[PDF-2.95 MB]

English

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Creators:

Davis, Gary A. ; Gao, Jingru ; Mudgal, Abhisek

Davis, Gary A. ; Gao, Jingru ; Mudgal, Abhisek Less -
Corporate Creators:

University of Minnesota. Dept. of Civil, Environmental, and Geo-Engineering ; Texas Transportation Institute

University of Minnesota. Dept. of Civil, Environmental, and Geo-Engineering ; Texas Transportation Institute Less -
Corporate Contributors:

Roadway Safety Institute ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program

Roadway Safety Institute ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program Less -
Subject/TRT Terms:

[+]

Crash Reconstruction Event Data Recorders Gap Acceptance Left Turns Markov Chains Monte Carlo Method Multiple Vehicle Crashes Simulation
Publication/ Report Number:

CTS 18-18
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

University of Minnesota. Center for Transportation Studies
Abstract:

This report documents work done to advance the state of art in crash simulation. This includes: (1) A field study to collect data on drivers’ left-turn gap acceptance and turning times, and development of statistical models that can be incorporated into a crash simulation model; (2) The use of Markov Chain Monte Carlo computational tools to quantify uncertainty in planar impact reconstruction of two-vehicle crashes; (3) A method for combing the results from planar impact reconstruction with event data recorder pre-crash data to estimate descriptive features of actual left-turn crashes. This is applied to several left-turn crashes from the National Highway Traffic Safety Administration’s NASS/CDS database; (4) A left-turn crash simulation model incorporating the above results. Initial model checking is performed using estimates from the reconstructed NASS/CDS cases as well as results from a previous study on left-turn crash risk. Also described is a method for simulating crash modification effects without having to first simulate crashes as rare outcomes in very large numbers of gap acceptances.
Format:

PDF
Funding:

DTRT13-G-UTC35
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:5096e14b46efdae8ff12f101110e34ce120baeea16c22a8d9d8db621638e0cfc
Download URL:

https://rosap.ntl.bts.gov/view/dot/55735/dot_55735_DS1.pdf
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Developing and Validating a Model of Left-Turn Crashes to Support Safer Design and Operations

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