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
Vehicle-Animal Crashes: An Increasing Safety Problem Aug-96 Warren E. Hughes, A. Reza Saremi, and Jeffrey F. Paniati
Use of Propensity Score Matching Method and Hybrid Bayesian Method to Estimate Crash Modification Fa Jan-06 Davis, G.A. and N. Aul
Two Low-Cost Safety Concepts for Two-Way, Stop-Controlled Intersections in Rural Areas Jan-09 Gross, F., R. Jagannathan, and W. Hughes
Turning Young Drivers into Survivors Sep-06 Opiela, K.S., B.M. Sant,and J.A. Childers
Truck Accident Models for Interstates and Two-Lane Rural Roads Oct-93 Yusuf M. Mohamedshah, Jeffrey F. Paniati, and Antoine G. Hobeika
Three-Strand Cable Median Barrier in North Carolina: In-Service Evaluation Jan-01 W.W. Hunter, J.R. Stewart, K.A. Krull, H.F.Huang, F.M. Council, and D.L.Harkey
Statistical Evaluation of the Effects of Highway Geometric Design on Truck Accident Involvements Oct-93 Shaw-Pin Miaou and Harry Lum
Safety Propensity Index for Signalized and Unsignalized Intersections: Exploration and Assessment Oct-14 Justin P. Schorr and Samer H. Hamdar
Safety of U-Turns at Unsignalized Median Openings: Some Research Findings Jan-05 Levinson, H.S., I.B. Potts, D.W. Harwood, J. Gluck, and D.J. Torbic
Safety Impact of Truck Lane Restrictions on Multilane Freeways Jan-09 Fontaine, M.D., C.S. Bhamidipati, and L.E. Dougald
Safety Evaluation of Rolled-In Continuous Shoulder Rumble Strips Installed on Freeways Oct-99 Michael S. Griffith
Safety Evaluation of Permanent Raised Snow-Plowable Pavement Markers Jan-04 Persaud, B, G. Bahar, C. Mollett, and C. Lyon
Safety Evaluation of Installing Center Two-Way Left-Turn Lanes on Two-Lane Roads Jan-08 Lyon, C., B.N. Persaud, N.X. Lefler, D.L. Carter, and K.A. Eccles
Safety Evaluation of Flashing Beacons at Stop-Controlled Intersections Jan-08 Srinivasan, R., D.L. Carter, B.N. Persaud, K.A. Eccles, and C. Lyon
Safety Effects of the Conversion of Rural Two-Lane to Four-Lane Roadways Based on Cross-Sectional Mo Oct-99 Forrest M. Council and J. Richard Stewart
Safety Effects of Speed Limit Changes: Use of PanelModels, Including Speed, Use, and Design Variable Jan-05 Kockelman, K.M. and Y.J. Kweon
Safety Effects of Cross-section Design on Rural Multi-lane Highways Jan-98 Jun Wang, Warren E. Hughes, and J. Richard Stewart
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
Safety Effectiveness of "Stop Ahead" Pavement Markings Jan-08 Gross, F., R. Jagannathan, C. Lyon, and K. Eccles
Safety Criteria for Selecting a Smart Corridor: Random Forest Approach Using HSIS Data from Washington State Dec-20 Xiaoyu Guo, Yongxin Peng, and Chaolun Ma

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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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