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Turner-Fairbank Highway Research Center


Journal Citations

Many of the studies conducted using HSIS data result in publication in professional journals, conference proceedings, research records, and other peer-reviewed documents.

Title Pub Date Author
A heterogeneity based case-control analysis of motorcyclist’s injury crashes: Evidence from motorcycle crash causation study Oct-18 Behram Wali, Asad J. Khattak, and Aemal J. Khattak
Injury Severity Analysis of Commercially-Licensed Drivers in Single-Vehicle Crashes: Accounting for Unobserved Heterogeneity and Age Group Differences Sep-18 Mohamed Osman, Sabyasachee Mishra, and Rajesh Paleti
Factors Influencing Injury Severity of Crashes Involving HAZMAT Trucks Mar-18 Majbah Uddin and Nathan Huynh
Modeling Crash Injury Severity by Road Feature to Improve Safety Jan-18 Praveena Penmetsa and Srinivas S Pulugurtha
Development of a global road safety performance function using deep neural networks Sep-17 Guangyuan Pan, Liping Fu, and Lalita Thakali
Evaluation of the Impact of Traffic Volume on Site Ranking May-17 Wen Cheng, Gurdiljot Singh Gill, Luis Loera, Xiaofei Wang, and Jung-Han Wang
Modelling single-vehicle, single-rider motorcycle crash injury severity: an ordinal logistic regression approach Apr-17 Mahdi Pour-Rouholamin, Mohammad Jalayer, and Huaguo Zhou
Investigating temporal trends in the explanatory variables related to the severity of drivers' injuries in single-vehicle collisions Feb-17 Essam Dabbour
Examining Injury Severity of Not At-Fault Drivers in Two-Vehicle Crashes Jan-17 Praveena Penmetsa, Srinivas S Pulugurtha, and Venkata R Duddud
Analysis of injury severity of large truck crashes in work zones Dec-16 Mohamed Osman, Rajesh Paleti, Sabyasachee Mishra, and Mihalis M Golias
Safety Propensity Index for Signalized and Unsignalized Intersections: Exploration and Assessment Oct-14 Justin P. Schorr and Samer H. Hamdar
Comparison of Sichel and Negative Binomial Models in Hotspot Identification Jan-14 Lingtao Wu, Yajie Zhao, and Dominique Lord
Appraisal of the Interactive Highway Safety Design Model's Crash Prediction and Design Modules: Case Feb-09 Donnell, E.T., F. Gross, B.P. Stodart, and K.S. Opiela
Safety Effectiveness of Lane and Shoulder Width Combinations on Rural, Two-Lane, Undivided Roads Jan-09 Gross, F., P.P. Jovanis, and K.A. Eccles
Analysis of Effects of Pavement Marking Retroreflectivity on Traffic Crash Frequency on Highways in Jan-09 Donnell, E.T., V. Karwa, and S. Sathyanarayanan
Safety Impact of Truck Lane Restrictions on Multilane Freeways Jan-09 Fontaine, M.D., C.S. Bhamidipati, and L.E. Dougald
Analysis of Road Crash Frequency with Spatial Models Jan-09 guero-Valverde, J. and P.P. Jovanis
Two Low-Cost Safety Concepts for Two-Way, Stop-Controlled Intersections in Rural Areas Jan-09 Gross, F., R. Jagannathan, and W. Hughes
Adjustment for Maximum Likelihood Estimate of Negative Binomial Dispersion Parameter Jan-08 Park, B. and D. Lord
Effects of Varying Dispersion Parameter of Poisson-Gamma Models on Estimation of Confidence Interval Jan-08 Geedipally, S.R. and D. Lord

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Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways

The safety effects of horizontal curves and grades on rural two-lane highways have been quantified in the American Association of State Highway and Transportation Officials (AASHTO) Highway Safety Manual (HSM), but it was not previously known whether and how the safety performance of horizontal curves and grades interact. Furthermore, there are no established safety effects for crest and sag vertical curves, and it is unknown whether and how the safety performance of crest or sag vertical curves is affected by the presence of horizontal curves.

The objective of this study was to quantify the combined safety effects of horizontal curves and grade combinations and express the results as crash modification factors (CMFs) that can be considered for use in the AASHTO HSM.

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Safety Evaluation of Converting Traffic Signals from Incandescent to Light-Emitting Diodes

Across the Nation, many agencies have been replacing conventional incandescent light bulbs in traffic signals with light-emitting diodes (LED). LEDs are primarily installed to reduce energy consumption and decrease maintenance. In addition, LEDs are expected to last much longer compared with incandescent bulbs and tend to age gradually. However, a recent study revealed several potential problems with LEDs, including their inability to melt snow and issues related to visual discomfort caused by glare at night.

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Safety Evaluation Of Discontinuing Late-Night Flash Operations at Signalized Intersections

During late-night flash (LNF) mode (from late night to early morning hours), traffic signals flash yellow for one road (typically, the major road), requiring caution but no stopping, and flash red for the other road (typically, the minor road), requiring drivers to stop and then proceed through the intersection after yielding to the traffic on the major road. The intent of LNF is to reduce energy consumption and delay during periods of low traffic demand. However, in recent years, many agencies have begun replacing LNF with normal phasing operation because of safety concerns.

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