Guanhao Xu
2018-2022
Ph.D. Dissertation: Multi-scale models of urban congestion dynamics to support advanced congestion management strategies
- Publications
- Yu, Z.*, Xu, G.*, Gayah, V.V. and Christofa, E. (2022) Incorporating phase rotation into a person-based signal timing optimization algorithm. IEEE Transactions on Intelligent Transportation Systems, 23(1):513-521.
- Xu, G.*, Yu, Z.* and Gayah, V.V. (2020) Analytical approximations for macroscopic fundamental diagrams with turning traffic. Transportation Research Record: Journal of the Transportation Research Board, 2674(9):933-947.
- Presentations
- Xu, G.*, Zhang, P.*, Gayah, V.V. and Hu, X. (2023) Opposing hysteresis patterns in flow and outflow macroscopic fundamental diagrams and their implications. 102nd Annual Meeting of the Transportation Research Board, 8-12 January, Washington, D.C. [abstract available in conference proceedings]
- Xu, G.* and Gayah, V.V. (2022) Non-unimodal and non-concave relationships in the network Macroscopic Fundamental Diagram caused by hierarchical streets. 101st Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Xu, G.*, Zhang, P.** and Gayah, V.V. (2021) Network Exit Function (NEF) under fast-varying demand. 2021 Transportation Engineering and Safety Conference, 8-10 December, University Park, Pennsylvania.
- Xu, G.* and Gayah, V.V. (2021) On the impacts of roadway hierarchy on the network Macroscopic Fundamental Diagram. 100th Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Xu, G.*, Yu, Z.* and Gayah, V.V. (2020) Analytical approximations for macroscopic fundamental diagrams with turning traffic. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Xu, G.* and Gayah, V.V. (2019) Safety performance functions for urban-suburban collector roadways incorporating K-factor and D-factor. 2019 Transportation Engineering and Safety Conference, 11-13 December, University Park, Pennsylvania. [Best student presentation award]
Rebeka Yocum
2018-2022
Ph.D. Dissertation: Socialization of safety: An investigation into the impact socioeconomic factors have on crash frequency, severity, risk and cost in Pennsylvania
(Currently faculty member at Oregon Institute of Technology)
- Publications
- Yocum, R.L.* and Gayah, V.V. (2022) County-level crash prediction models for Pennsylvania accounting for income characteristics. Transportation Research Interdisciplinary Perspectives, in press.
- Yocum, R.L.* and Gayah, V.V. (2021) Coordinated perimeter flow and variable speed limit control for mixed freeway and urban networks. Transportation Research Record: Journal of the Transportation Research Board, 2676(1):596-609.
- Presentations
- Yocum, R.L.* and Gayah, V.V. (2022) Investigating the inclusion of traffic operations concepts in undergraduate civil engineering curricula. 101st Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Yocum, R.L.* and Gayah, V.V. (2021) Coordinated perimeter flow and variable speed limit control for mixed freeway and urban networks. 100th Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Yocum, R.L.* and Gayah, V.V. (2021) Identifying relationships between socioeconomic indicators and crash frequency in Pennsylvania. 100th Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Yocum, R.* and Gayah, V.V. (2020) Determining the effect of wealth on crash frequency in Pennsylvania. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Yocum, R.* and Gayah, V.V. (2020) Determining the effect of wealth on crash frequency in Pennsylvania. ASCE International Conference on Transportation and Development (ICTD), 26-29 May, Seattle, Washington. (cancelled due to COVID)
- Yocum, R.L.* and Gayah, V.V. (2019) Determining the effect of wealth on crash frequency in Pennsylvania. 2019 Transportation Engineering and Safety Conference, 11-13 December, University Park, Pennsylvania. [Best student presentation runner-up]
- Awards
- Graduate Scholarship for Excellence in Engineering, Penn State College of Engineering (2021)
- First place presentation award, College of Engineering Research Symposium (2021)
- Harold F. Martin Graduate Assistant Outstanding Teaching Award (2021)
- FHWA Dwight D. Eisenhower Graduate Fellowship (2020)
- Paul H. Schweitzer Memorial Graduate Fellowship, Penn State College of Engineering (2020)
- Louis S. and Sara S. Michael Endowed Graduate Fellowship in Engineering, Penn State College of Engineering (2020)
- Penn State University Graduate Fellowship (2018)
Ferdousy Runa
2020-2022
Ph.D. Dissertation: TBD
- Presentations
- Runa, F.*, Guler, S.I. and Gayah, V.V. (2021) Do existing split failure metrics accurately reflect pedestrian operation at signalized intersections? 2021 Transportation Engineering and Safety Conference, 8-10 December, University Park, Pennsylvania.
David Taglieri
2020-2022
M.S. Thesis: Analysis of roundabout operations in urban traffic networks
- Presentations
- Taglieri, D. and Gayah, V.V. (2021) Comparison of operational performance of roundabouts vs. traffic signals in urban street networks. 2021 Transportation Engineering and Safety Conference, 8-10 December, University Park, Pennsylvania.
- Awards
- Erickson Discovery Grant recipient, Penn State University (2021)
Xuting Wang (postdoc)
2020-2021
- Publications
- Wang, X.* and Gayah, V.V. (2021) Cordon-based pricing schemes for mixed networks: a Macroscopic Fundamental Diagram approach. Transportation Research Record: Journal of the Transportation Research Board, in press.
- Presentations
- Wang, X.*, Gayah, V.V. and Guler, S.I. (2022) Integration of pavement roughness into safety performance. 101st Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Wang, X.* and Gayah, V.V. (2021) Departure time choice and tolls for a high-occupancy toll lane system with heterogeneity in arrival time. 100th Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
Hang Jia
2019-2020
M.S. Thesis: Alternate approaches for examining the need for updating safety performance functions
Xiao (Joyce) Liang
2016-2019
Ph.D. Dissertation: Multi-modal traffic signal control in a Connected and Autonomous Vehicle environment
- Publications
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2022) Decentralized arterial traffic signal optimization with Connected Vehicle information. Journal of Intelligent Transportation Systems, in press.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2020) Traffic signal control optimization in a Connected Vehicle environment considering pedestrians. Transportation Research Record: Journal of the Transportation Research Board, 2674(10):499-511.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2020) A heuristic method to optimize generic signal phasing and timing plans at signalized intersections using Connected Vehicle technology. Transportation Research Part C: Emerging Technologies, 111:156-170.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2020) An equitable traffic signal control scheme at isolated signalized intersections using Connected Vehicle technology. Transportation Research Part C: Emerging Technologies, 110:81-97.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2019) Joint optimization of signal phasing and timing and vehicle speed guidance in a connected and autonomous vehicle environment. Transportation Research Record: Journal of the Transportation Research Board, 2673(4):70-83.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2018) Signal timing optimization with Connected Vehicle technology: Platooning to improve computational efficiency. Transportation Research Record: Journal of the Transportation Research Board, 2672(18):81-92.
- Presentations
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2021) Decentralized arterial traffic signal optimization with Connected Vehicle information. 100th Annual Meeting of the Transportation Research Board, January, Washington, D.C. [abstract available in conference proceedings]
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2020) Traffic signal control optimization in a Connected Vehicle environment considering pedestrians. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2019) A heuristic method to optimize generic signal phasing and timing plans at signalized intersections using Connected Vehicle technology. 98th Annual Meeting of the Transportation Research Board, 13-17 January, Washington, D.C.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2019) Joint optimization of signal phasing and timing and vehicle speed guidance in a connected and autonomous vehicle environment. 98th Annual Meeting of the Transportation Research Board, 13-17 January, Washington, D.C.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2018) A scalable and computationally efficient Connected Vehicle-based signal control algorithm. 21st Annual IEEE Conference on Intelligent Transportation Systems, 4-7 November, Maui, Hawaii.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2018) Signal timing optimization with Connected Vehicle technology: Platooning to improve computationally efficiency. 97th Annual Meeting of the Transportation Research Board, 7-11 January, Washington, D.C.
- Guler, S.I., Gayah, V.V. and Liang, X.* (2020) Signal control utilizing Connected Vehicle information. INFORMS Annual Meeting 2020, 10 November.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2018) Joint optimization of signal phasing and timing and speed guidance in a Connected and Autonomous Vehicle environment. 2018 Transportation Engineering and Safety Conference, 5-7 December, University Park, Pennsylvania. [Best student presentation award]
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2017) Signal timing optimization with Connected Vehicle Technology: Platooning to improve computational efficiency. 2017 Transportation Engineering and Safety Conference, 6-8 December, University Park, Pennsylvania.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2017) Signal timing optimization with Connected Vehicle technology: Platooning to improve computational efficiency. 2017 Pennsylvania Automated Vehicle Summit, 11-12 September, State College, Pennsylvania.
- Liang, X.*, Guler, S.I. and Gayah, V.V. (2018) Signal timing optimization using Connected Vehicle technology. USDOT ITS-JPO Professional Capacity Building T3e webinar.
- Awards
- Penn State Graduate Excellence Fellowship (2016)
Zhengyao Yu
2014-2019
Ph.D. Dissertation: Resilience in urban networks: A comparison of three street network configurations
M.S. Thesis: Modeling bus transit operations: Passenger occupancy and travel time
- Publications
- Yu, Z.*, Xu, G.*, Gayah, V.V. and Christofa, E. (2022) Incorporating phase rotation into a person-based signal timing optimization algorithm. IEEE Transactions on Intelligent Transportation Systems, 23(1):513-521.
- Guadamuz, R.**, Tang, H.**, Yu, Z.*, Guler, S.I. and Gayah, V.V. (2021) Green time usage metrics on signalized intersections and arterials using high-resolution traffic data. International Journal of Transportation Science and Technology, published online.
- Xu, G.*, Yu, Z.* and Gayah, V.V. (2020) Analytical approximations for macroscopic fundamental diagrams with turning traffic. Transportation Research Record: Journal of the Transportation Research Board, 2674(9):933-947.
- Yu, Z.* and Gayah, V.V. (2020) Resilience of urban street network configurations under low demands. Transportation Research Record: Journal of the Transportation Research Board, 2674(9):982-994.
- Gayah, V.V, Donnell, E.T., Yu, Z.* and Li, L.** (2018) Safety and operational impacts of setting speed limits below engineering recommendations. Accident Analysis and Prevention, 121:43-52.
- Yu, Z.*, Gayah, V.V. and Christofa, E. (2017) Person-based signal timing optimization to account for flexible cycle lengths and uncertain transit vehicle arrivals. Transportation Research Record: Journal of the Transportation Research Board, 2620:31-42.
- Yu, Z.*, Wood, J.S.** and Gayah, V.V. (2017) Using survival models to estimate bus travel times and associated uncertainties. Transportation Research Part C: Emerging Technologies, 74:366-382.
- Donnell, E.T., Gayah, V.V., Kersavage, K.** and Yu, Z.* (2017) Crash data safety factors evaluation. Final Report for the Pennsylvania Department of Transportation, FHWA-PA-2017-004-PSU WO 3.
- Donnell, E.T., Gayah, V.V., Yu, Z.*, Li, L.** and DePrator, A.* (2016) Speed limits set lower than engineering recommendations. Final Report for the Montana Department of Transportation, FHWA/MT‑16-008/8225-01.
- Gayah, V.V., Yu, Z.* and Wood, J.S.** (2015) Estimating uncertainty of bus arrival times and passenger occupancies. Final Report for the Mineta National Transit Research Consortium, MNTC Report No. 12-56.
- Zheng, G.**, Zang, X., Xu, N., Wei, H.**, Yu, Z.*, Gayah, V.V., Xu, K. and Li, Z. (2019) Diagnosing reinforcement learning for traffic signal control. arXiv: 04716v1.
- Presentations
- Xu, G.*, Yu, Z.* and Gayah, V.V. (2020) Analytical approximations for macroscopic fundamental diagrams with turning traffic. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Bayrak, M.**, Yu, Z.* and Gayah, V.V. (2020) Optimal spatial configuration of left-turn restrictions on urban grid networks using enumeration and Population-Based Incremental Learning. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Yu, Z.* and Gayah, V.V. (2020) Resilience of urban street network configurations under low demands. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Wei, H.**, Chen, C. , Wu, K.**, Zheng, G.**, Yu, Z., Gayah, V.V., and Li, Z. (2019) Deep Reinforcement Learning for Traffic Signal Control along Arterials. International Conference on Knowledge Discovery and Data Mining (KDD 2019): Workshop on Deep Reinforcement Learning for Knowledge Discovery, 4-8 August, Anchorage, Alaska.
- Yu, Z.* and Gayah, V.V. (2019) Network performance under link disruptions: A comparison of two-way and one-way network configurations. 98th Annual Meeting of the Transportation Research Board, 13-17 January, Washington, D.C.
- Yu, Z.*, Gayah, V.V. and Christofa, E. (2018) Implementing phase rotation in a person-based signal timing optimization. 21st Annual IEEE Conference on Intelligent Transportation Systems, 4-7 November, Maui, Hawaii.
- Yu, Z.* and Gayah, V.V. (2018) Comparison of urban street network resilience for grid networks with and without left-turning maneuvers under light traffic situation. 97th Annual Meeting of the Transportation Research Board, 7-11 January, Washington, D.C.
- Yu, Z.*, Gayah, V.V. and Christofa, E. (2018) Person-based signal timing optimization with flexible cycle lengths and phase rotation. 97th Annual Meeting of the Transportation Research Board, 7-11 January, Washington, D.C.
- Yu, Z.*, Gayah, V.V. and Christofa, E. (2017) Person-based signal timing optimization to account for flexible cycle lengths and uncertain transit vehicle arrivals. 96th Annual Meeting of the Transportation Research Board, 8-12 January, Washington, DC.
- Yu, Z. *, Wood, J.S.** and Gayah, V.V. (2016) Regression models for real-time bus occupancy prediction. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
- Yu, Z. *, Wood, J.S.** and Gayah, V.V. (2016) Modeling bus travel times and travel time uncertainty: Comparison of linear and survival model frameworks. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
- Bayrak, M.**, Yu, Z.* and Gayah, V.V. (2018) Optimal spatial configuration of left-turn restrictions on urban grid networks. Traffic Flow Theory and Characteristics Committee Mid-Year Meeting, 7-9 August, Woods Hole, MA.
- Guadamuz, R.**, Tang, H.**, Yu, Z.* Guler, S.I. and Gayah, V.V. (2019) Green-time usage metrics on signalized intersections with high-resolution data. Transportation Research Board Traffic Signal Systems Committee Midyear Meeting, 7 August, Woods Hole, Massachusetts. [Second place, TRB Traffic Signal Systems Committee Big Data Challenge]
- Yu, Z.* and Gayah, V.V. (2018) A comparison of different urban street network configurations’ resilience to disruptions. 2018 Transportation Engineering and Safety Conference, 5-7 December, University Park, Pennsylvania.
- Yu, Z.* and Gayah, V.V. (2018) “TSP” at isolated intersections: Some advances under simulation environment. 2018 Transportation Engineering and Safety Conference, 5-7 December, University Park, Pennsylvania.
- Yu, Z.* and Gayah, V.V. (2017) Resilience for urban street networks: An analytical comparison under light traffic. 2017 Transportation Engineering and Safety Conference, 6-8 December, University Park, Pennsylvania. [Best student presentation award]
- Yu, Z.*, Gayah, V.V. and Christofa, E. (2016) Person-based signal timing optimization to account for flexible cycle lengths and uncertain transit vehicle arrivals. 2016 Transportation Engineering and Safety Conference, 7-9 December, University Park, Pennsylvania.
- Yu, Z.* and Gayah, V.V. (2015) Modeling bus transit operations: Passenger occupancy and travel time. 2015 Transportation Engineering and Safety Conference, 9-11 December, University Park, Pennsylvania.
- Awards
- Student Fellowship to attend the 22nd International Symposium of Transportation and Traffic Theory
- Barnes Graduate Travel Scholarship (2017)
- Leo Russell Fellowship for Outstanding Transportation Engineering Graduate Student at Penn State (2016)
- Best presentation award, College of Engineering Research Symposium (2016)
Yinghai Yu
2017-2019
M.S. Thesis: Using real-time speed data to quantify impacts of weather on travel speed
Owen Hitchcock
2014-2018
M.S. Thesis: Methods to reduce dimensionality and identify candidate solutions in multi-objective signal timing problems
Undergraduate Research (REU): Analysis of dynamic left-turn restrictions and other traffic control strategies on urban grid networks
- Publications
- Hitchcock, O.* and Gayah, V.V. (2018) Methods to reduce dimensionality and identify candidate solutions in multi-objective signal timing problems. Transportation Research Part C: Emerging Technologies, 96:398-414
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2017) Improving urban street network efficiency by prohibiting left turns at signalized intersections. Transportation Research Record: Journal of the Transportation Research Board, 2622:58-69. [Winner of D. Grant Mickle Outstanding Paper Award for TRB Operations and Maintenance Area]
- Presentations
- Hitchcock, O.* and Gayah, V.V. (2018) Methods to identify candidate solutions in multi-objective signal timing optimization. 97th Annual Meeting of the Transportation Research Board, 7-11 January, Washington, D.C.
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2017) Improving street network efficiency by prohibiting left turns at signalized intersections. 96th Annual Meeting of the Transportation Research Board, 8-12 January, Washington, DC.
- Hitchcock, O.* and Gayah, V.V. (2017) Methods to reduce dimensionality and identify candidate solutions in multi-objective signal timing problems. 2017 Transportation Engineering and Safety Conference, 6-8 December, University Park, Pennsylvania.
- Hitchcock, O.* and Gayah, V.V. (2017) Methods to identify candidate solutions in multi-objective signal timing optimization. MASITE Annual Conference, 2 October, Egg Harbor City, New Jersey.
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2016) Improving street network efficiency by prohibiting left turns at signalized intersections. 2016 Transportation Engineering and Safety Conference, 7-9 December, University Park, Pennsylvania. [Best student presentation award]
- DePrator, A.*, Hitchcock, O.* and Gayah, V.V. (2015) Analysis of dynamic left-turn restrictions on urban grid networks. 2015 Transportation Engineering and Safety Conference, 9-11 December, University Park, Pennsylvania.
- Awards
- Leo Russell Fellowship for Outstanding Transportation Engineering Graduate Student at Penn State (2018)
- Excellence student article competition winner, Urban Engineers (2018)
- FHWA Dwight D. Eisenhower Graduate Fellowship (2016)
- Civil Engineering Top in Class in Transportation Engineering (2016)
Anthony DePrator
2014-2016
M.S. Thesis: Dynamic traffic control: The treatment of left turns in an urban grid network
Undergraduate Research: The efficiency of one-way and two-way traffic networks
- Publications
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2017) Improving urban street network efficiency by prohibiting left turns at signalized intersections. Transportation Research Record: Journal of the Transportation Research Board, 2622:58-69. [Winner of D. Grant Mickle Outstanding Paper Award for TRB Operations and Maintenance Area]
- Donnell, E.T., Gayah, V.V., Yu, Z.*, Li, L.** and DePrator, A.* (2016) Speed limits set lower than engineering recommendations. Final Report for the Montana Department of Transportation, FHWA/MT‑16-008/8225-01.
- Presentations
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2017) Improving street network efficiency by prohibiting left turns at signalized intersections. 96th Annual Meeting of the Transportation Research Board, 8-12 January, Washington, DC.
- DePrator, A.J.*, Hitchcock, O.* and Gayah, V.V. (2016) Improving street network efficiency by prohibiting left turns at signalized intersections. 2016 Transportation Engineering and Safety Conference, 7-9 December, University Park, Pennsylvania. [Best student presentation award]
- DePrator, A.*, Hitchcock, O.* and Gayah, V.V. (2015) Analysis of dynamic left-turn restrictions on urban grid networks. 2015 Transportation Engineering and Safety Conference, 9-11 December, University Park, Pennsylvania.
- Awards
- Civil Engineering Top in Class in Transportation Engineering (2015)
Xavier Harmony
2014-2016
M.S. Thesis: Evaluating the implementation of real-time transit information through an examination of information supply and demand
- Publications
- Harmony, X.* and Gayah, V.V. (2017) Evaluation of real-time transit information systems: An information demand and supply approach. International Journal of Transportation Science and Technology, 6(1):86-98.
- Presentations
- Harmony, X.* and Gayah, V.V. (2017) Implementing real-time transit information systems: An examination of information supply and demand. 96th Annual Meeting of the Transportation Research Board, 8-12 January, Washington, DC.
- Harmony, X.* and Gayah, V.V. (2015) Passenger expectations with and perceptions of real-time transit information. 2015 Transportation Engineering and Safety Conference, 9-11 December, University Park, Pennsylvania.
- Awards
- American Public Transportation Association Fellowship (2015)
Xueyu (Shirley) Gao
2012-2015
Ph.D. Thesis: Modeling uncertainty in large-scale urban traffic networks
- Publications
- Keyvan-Ekbatani, M., Gao, X.*, Gayah, V.V. and Knoop, V.L. (2019) Traffic-responsive signals combined with perimeter control: Investigating the benefits. Transportmetrica B: Transport Dynamics, 7(1):1402-1425.
- Gao, X.* and Gayah, V.V. (2018) An analytical framework to model uncertainty in urban network dynamics using Macroscopic Fundamental Diagrams. Transportation Research Part B: Methodological, 117B:660-675.
- Gayah, V.V., Gao, X.* and Nagle, A.S.* (2014) On the impacts of locally adaptive signal control on urban network stability and the Macroscopic Fundamental Diagram. Transportation Research Part B: Methodological, 70:255-268.
- Presentations
- Gao, X.* and Gayah, V.V. (2017) An analytical framework to model uncertainty in urban network dynamics using Macroscopic Fundamental Diagrams. 22nd International Symposium on Transportation and Traffic Theory, 24-26 July, Evanston, Illinois.
- Keyvan-Ekbatani, M., Gao, X.*, Gayah, V.V. and Knoop, V.L. (2016) Combination of traffic responsive and gating control in urban networks: Effective interactions. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
- Keyvan-Ekbatani, M., Gayah, V.V., Gao, X.*, and Knoop, V.L. (2016) Examining perimeter gating of urban traffic networks with adaptive traffic signals. Traffic and Granular Flow 2015, 28-30 October, Nootdorp, The Netherlands.
Jeffrey Gooch (co-advised with Eric Donnell)
2013-2015
M.S. Thesis: Estimating the safety performance of horizontal curves on Pennsylvania two-lane rural roads
- Publications
- Himes, S.C., Gayah, V.V., Gooch, J.P.*, and Read, S. (2020) Estimating baseline numbers for safety measure target settings in Virginia. Transportation Research Record: Journal of the Transportation Research Board, 2674(8):523-535.
- Gooch, J.P.*, Gayah, V.V. and Donnell, E.T. (2018) Comparison of safety performance functions for horizontal curves and tangents on two lane, two way rural roads. Accident Analysis and Prevention, 120:28-37.
- Gooch, J.P.*, Gayah, V.V. and Donnell, E.T. (2016) Quantifying the safety effects of horizontal curves on two-way, two-lane rural roads. Accident Analysis and Prevention, 92:71-81.
- Porter, R.J., Dunn, M., Hamilton, I., Gooch, J.P.* and Gayah, V.V. (2019) Safety analysis needs assessment for Transportation Systems Management and Operations. Report for the Federal Highway Administration, FHWA-SA-19-041.
- Presentations
- Himes, S.C., Gayah, V.V., Gooch, J.P.*, and Read, S. (2020) Estimating baseline numbers for safety measure target settings in Virginia. 99th Annual Meeting of the Transportation Research Board, 12-16 January, Washington, D.C. [abstract available in conference proceedings]
- Gooch, J.P.*, Gayah, V.V. and Donnell, E.T. (2018) Safety performance estimation of horizontal curves on two lane, two way rural roads. 97th Annual Meeting of the Transportation Research Board, 7-11 January, Washington, D.C.
- Gooch, J.P.* and Gayah, V.V. (2016) On the design of linear transit systems with park and rides: Analysis of an idealized scenario. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
- Gooch, J.P.*, Gayah, V.V. and Donnell, E.T. (2015) Estimating the safety effects of horizontal curves on Pennsylvania two-lane rural roads. 2015 Road Safety and Simulation International Conference, 6-8 October, Orlando, Florida.
- Awards
- Leo Russell Fellowship for Outstanding Transportation Engineering Graduate Student at Penn State (2015)
Jan-Torben Girault (co-advised with Monica Menendez)
2015 (student at ETH Zurich, completed thesis work at Penn State)
M.S. Thesis: Effects of traffic signal coordination on the macro fundamental diagram
- Publications
- Girault, J.-T.*, Gayah, V.V., Guler, S.I. and Menendez, M. (2016) An exploratory analysis of signal coordination impacts on the Macroscopic Fundamental Diagram. Transportation Research Record: Journal of the Transportation Research Board, 2560:36-46.
- Presentations
- Girault, J.-T.*, Gayah, V.V., Guler, S.I. and Menendez, M. (2016) An exploratory analysis of signal coordination impacts on the Macroscopic Fundamental Diagram. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
Krae Stieffenhofer
2012-2014
M.S. Thesis: Investigating users reactions to pricing strategies at overcrowded park and ride facilities
- Publications
- Stieffenhofer, K.E.*, Barton, M.*, Gayah, V.V. (2016) Assessing park-and-ride efficiency and user reactions to parking management strategies. Journal of Public Transportation, 19(4):75-92.
- Gayah, V.V., Stieffenhofer, K.* and Shankar, V. (2014) How can we maximize efficiency and increase person occupancy at overcrowded park and rides? Final Report for the Washington State Department of Transportation, WA-RD 830.1.
- Presentations
- Stieffenhofer, K. *, Barton, M. * and Gayah, V.V. (2016) Assessing park-and-ride use and user reactions to parking management strategies: A case study in Puget Sound, Washington. 95th Annual Meeting of the Transportation Research Board, 10-14 January, Washington, DC.
Nicolas Mühlich (co-advised with Monica Menendez)
2014 (student at ETH Zurich, completed thesis work at Penn State)
M.S. Thesis: Comparing congestion recovery on street networks using macroscopic traffic models
- Publications
- Muhlich, N.*, Gayah, V.V. and Menendez, M. (2015) Use of microsimulation for examination of Macroscopic Fundamental Diagram hysteresis patterns on hierarchical street networks. Transportation Research Record: Journal of the Transportation Research Board, 2491:117-126.
- Presentations
- Muhlich, N.*, Gayah, V.V. and Menendez, M. (2015) An examination of MFD hysteresis patterns for hierarchical urban street networks using micro-simulation. 94th Annual Meeting of the Transportation Research Board, 11-15 January, Washington DC.
- Awards
- Culmann Fonds Award for Outstanding MS Thesis at ETH Zurich (2014)
Andrew Nagle
2012-2014
M.S. Thesis: Using mobile probe data to estimate urban traffic network metrics and implement large-scale traffic control strategies.
- Publications
- Gayah, V.V., Gao, X.* and Nagle, A.S.* (2014) On the impacts of locally adaptive signal control on urban network stability and the Macroscopic Fundamental Diagram. Transportation Research Part B: Methodological, 70:255-268.
- Nagle, A.S.* and Gayah, V.V. (2014) Accuracy of network-wide traffic states estimated from mobile probe data. Transportation Research Record: Journal of the Transportation Research Board, 2421:1-11.
- Gayah, V.V., Nagle, A.S.*, Rakha, H. and Du, J. (2015) Using mobile probes to inform and measure the effectiveness of traffic control strategies on urban networks. Final Report for the Mid-Atlantic Universities Transportation Center, MAUTC-2012-02.
- Presentations
- Nagle, A.S.* and Gayah, V.V. (2015) Comparing the use of link and probe data to inform perimeter metering control. 94th Annual Meeting of the Transportation Research Board, 11-15 January, Washington DC.
- Nagle, A.S.* and Gayah, V.V. (2014) The accuracy of network-wide traffic state estimations using mobile probe data. 93rd Annual Meeting of the Transportation Research Board, 12-16 January, Washington DC.
- Nagle, A.S.* and Gayah, V.V. (2013) A method to estimate the Macroscopic Fundamental Diagram using limited mobile probe data, 16th Annual IEEE Conference on Intelligent Transportation Systems, 6-9 October, The Hague, Netherlands.
- Awards
- Mid-Atlantic University Transportation Center Student of the Year (2015)
- Leo Russell Fellowship for Outstanding Transportation Engineering Graduate Student at Penn State (2014)
- FHWA Dwight D. Eisenhower Graduate Fellowship (2013)