Documents in the Category: Effects

A Programmable Procedure to Calculate Number of Traffic Conflict Points at Highway Intersections

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Traffic conflict points at intersections are the points at which traffic movements intersect (including crossing, merge, and diverge). Numbers and distribution of conflict points have been used to evaluate intersection access management designs and safety performance. Traditionally, determination of numbers of conflict points for different traffic movements has been based on manual methods, which causes the difficulty for computerized procedures to evaluate safety performance of different access management designs.

Update of Florida Crash Reduction Factors and Countermeasures to Improve the Development of District Safety Improvement Projects

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Gans, A., J. Shen, and A. Rodriguez, “Update of Florida Crash Reduction Factors and Countermeasures to Improve the Development of District Safety Improvement Projects,” prepared for the Florida Department of Transportation, (2005)

Safety Evaluation of Access Management Policies and Techniques

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VHB. Safety Evaluation of Access Management Policies and Techniques, Federal Highway Administration (contract in progress).

      The objectives of this ongoing research are to:

1. Develop evaluation models to assess the safety impact of access management policies and treatments relevant to urban, urbanizing, and suburban arterials.

2. Propose an access management evaluation framework that can be adopted by state and local agencies to evaluate compliance of access management policies, and the impacts of viable access treatment techniques.

Safety Impacts of Access Management Techniques in Utah

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Schultz , G., J. Lewis, and T. Boschert, “Safety Impacts of Access Management Techniques in Utah,” Transportation Research Record: Journal of the Transportation Research Board, No. 1994, Transportation Research Board of the National Academies, Washington, D.C., (2007, pp. 35-42). [Schultz, G. and J. Lewis, Assessing the Safety Benefits of Access Management Techniques, Brigham Young University, Utah Department of Transportation (2006)]

Modeling and Evaluating Safety Impacts of Access Management Features in Las Vegas, Nevada, Valley

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Mauga, T. and M. Kaseko, “Modeling and Evaluating Safety Impacts of Access Management Features in Las Vegas, Nevada, Valley,” Transportation Research Record: Journal of the Transportation Research Board, No. 2171, Transportation Research Board, Washington D.C. (2010) pp. 57-65

Safety Effects of Access Design Decisions

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Gattis, J., “Safety Effects of Access Design Decisions” ITE 2008 Technical Conference and Exhibit (2008)

            This paper contains a detailed literature review of studies which have examined and reported safety of designs and operational features that contribute to managing access along roadways. It also presents trends found among the findings reported in these previous studies. 

Operational Effects of Right Turns Followed by U-Turns at Signalized Intersections as Alternatives to Direct Left-Turns from Driveways

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Liu, P., F. Hu and J. Lu, “Operational Effects of Right Turns Followed by U-Turns at Signalized Intersections as Alternatives to Direct Left-Turns from Driveways,” Advances in Transportation Studies, Vol. 11 (2007)

Operational Effects of U-Turns as Alternatives to Direct Left Turns from Driveways or Side Streets: Some Research Findings in Florida

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Lu, J., P. Liu, G. Sokolow and F. Pirinccioglu, “Operational Effects of U-Turns as Alternatives to Direct Left Turns from Driveways or Side Streets: Some Research Findings in Florida,” Transportation Research Board 85th Annual Meeting (2006)

Methodology to Quantify the Effects of Access Management on Roadway Operations and Safety, 3 volumes

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Lu, J. et al, Methodology to Quantify the Effects of Access Management on Roadway Operations and Safety, 3 volumes, prepared by the University of South Florida for the Florida Department of Transportation, Tampa, FL, (2001)

Evaluating Change in Corridor Operations Based on Access Management Strategies Using VISSIM Along US-69 Through Ankeny, Iowa

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Fitzsimmons, E., S. Hallmark, D. Plazak and K. Giese, “Evaluating Change in Corridor Operations Based on Access Management Strategies Using VISSIM Along US-69 Through Ankeny, Iowa,” Transportation Research Board 89th Annual Meeting (2010)

Estimating the Safety and Operational Impact of Raised Medians and Driveway Density: Experience from Texas and Oklahoma Case Studies

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Eisele, W.L. and W.E. Frawley, “Estimating the Safety and Operational Impact of Raised Medians and Driveway Density: Experience from Texas and Oklahoma Case Studies,” Transportation Research Record 1931, Transportation Research Board of the National Academies, Washington, D.C. (2005)

Incorporating Driveway Density into an Arterial Corridor Travel Time Index Estimation Model

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Eisele, W.L., Y. Zhang, E.S. Park, and R. Stensrud, “Incorporating Driveway Density into an Arterial Corridor Travel Time Index Estimation Model,” 10-2670, TRB 89th Annual Meeting Compendium of Papers DVD, Washington, D.C. (2010)

Prohibiting Left-turn Movements at Mid-Block Unsignalized Driveways: Simulation Analysis.

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Chowdhury, M., N. Derov, T. Paulin, and A. Sadek, “Prohibiting Left-turn Movements at Mid-Block Unsignalized Driveways: Simulation Analysis.” Journal of Transportation Engineering, Vol. 131, No. 279 (April 2005), pp. 279-285

Transportation Research Record: Journal of the Transportation Research Board

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Wan, F., Y. Zhang and K. Fitzpatrick, “Analysis of Platoon Impacts on Left-Turn Delay at Unsignalized Intersections,” Transportation Research Record: Journal of the Transportation Research Board, No. 2223, Transportation Research Board of the National Academies, Washington, D.C. (2011)

An Evaluation of Right-Turn-In/Right-Turn-Out Restrictions in Access Management

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Lyles, R., B. Malik, A. Chaudhry, G. Abu-Lebdeh and M. Siddiqui, An Evaluation of Right-Turn-In/Right-Turn-Out Restrictions in Access Management, Prepared for the Michigan Department of Transportation, Michigan State University (2009)

[ see also Malik, B., M. Siddiqui and R. Lyles, “An Evaluation of Driveway Turning Restrictions in Access Management Using Microsimulation,” 90th Annual Transportation Research Board Meeting, Washington, D.C. (2011)]

Guideline Development for Minimizing Operating Speed Variance of Multilane Highways by Controlling Access Design

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Lu, Jian. Guideline Development for Minimizing Operating Speed Variance of Multilane Highways by Controlling Access Design, Transportation Research Board of the National Academies, Washington, D.C., Southeastern Transportation Center, University of Tennessee (in progress, end date noted as August 2011)

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