CTR closed fiscal year 2025 at $14.5 million in annual expenditures. Three years ago, that number was $8.1 million. We nearly doubled the center’s research enterprise by investing in people, partnerships, and the research areas where Tennessee has a right to lead. Our funding base is diversified by design. Federal sponsors account for 42% of […]
As we conclude another year for CTR, I am excited to share the highlights of our achievements and our aspirations for the future. This past year has been one of unprecedented growth and collaboration, reinforcing our position as a leader in transportation, having impact on our local communities and worldwide.
G. Erhardt, J. Hoque, V. Goyal, S. Berrebi, C. Brakewood, and K. Watkins, Why has public transit ridership declined in the United States. Transportation Research Part A: Policy and Practice, 2022.
Yang, H.J., Beck, J., Hasan, M., Beyazit, E., Chakraborty, S, Wongpiromsarn, T., & Sarkar, S.. (2024). “GENESIS-RL: Generating Natural Edge-Cases with Systematic Integration of Safety Considerations and Reinforcement Learning.” ARXIV, 27.
I am thrilled to share with you exciting news about the remarkable growth and achievements of the Center for Transportation Research. With great pride and enthusiasm, I convey our center’s tremendous progress and impact in the last year. The center has undergone a remarkable transformation and expansion, and I am delighted to highlight some of the key accomplishments and developments that have taken place.
In May of 2023, CTR was chosen as an NSF Regional Innovation Development Engines program. There are 44 NSF Engines across the US, and each has a mandate to catalyze and foster innovation ecosystems. Goals for the NSF Development Engines are to: CTR’s NSF Development Engine is named TEAM TN. It is a partnership with […]
River Transportation and the Broiler Industry in North Alabama: A Descriptive Analysis. Larry G. Bray, Center for Transportation Research, University of Tennessee, Knoxville and David P. Vogt, Decision Commerce Group, LLC
Barge Traffic Disruptions and Their Effects on Shipping Costs in Agricultural Freight Corridors. Mark L. Burton, Director of Transportation Economics, Center for Transportation Research, University of Tennessee, Knoxville
McQueen, M., J. MacArthur, C. Cherry (2019) The E-Bike Potential: Estimating the Effect of E-bikes On Person Miles Travelled and Greenhouse Gas Emissions. NITC White Paper May 2019
McQueen, M., J. MacArthur, C. Cherry (2019) How E-Bike Incentive Programs are Used to Expand the Market. NITC White Paper May 2019
Macarthur, J., M. Harpool, D. Scheppke, C. Cherry (2018) A North American Survey of Electric Bicycle Owners. National Institute of Transportation and Communities. NITC-RR-1041.
Cherry, C., A.M. Hezaveh, M. Noltenius, A. Khattak. L. Merlin, E. Dumbaugh, D. Ragland, L. Sandt. (2018) Completing the Picture of Traffic Injuries: Understanding Data Needs and Opportunities for Road Safety. Collaborative Science Center for Road Safety. April 30, 2018.
Ling, Z., C. Cherry, How to Prevent Railroad Crossings from Becoming a Hazard to Bicyclists. Joint Rail Conference, Columbia, SC. April 12-15, 2016.
Is There Evidence for a Gap Between On-road and Test-Cycle Fuel Economy? – 16-1579, David Greene, Asad Khattak, Jun Liu, Xin Wang, Janet Hopson, Richard Goeltz.
A comparative study of passenger satisfaction with Bus Rapid Transit with and without awareness of travel information – 16-2895, Dan Wan, Camille Kamga, Jun Liu, Aaron Sugiura, Eric Beaton.
How On-Road Fuel Economy Varies with Vehicle Cumulative Mileage and Daily Use – 16-1586, David Greene, Jun Liu, Asad Khattak.
Effects of Car-Truck Mix on Occurrences of Truck- Related Crashes – 16-1287, Chunjiao Dong, Mark Burton, Shashi Nambisan, Jian Sun.
Modifiable Temporal Unit Problem in Crash- Frequency Modeling – 16-6533, Bumjoon Bae, Changju Lee, Tae- Young Pak, Asad Khattak.
Exploring Multiple Eco-routing Guidance Strategies in a Commuting Corridor – 16-0033, Jorge Bandeira, Paulo Fernandes, Tania Fontes, Sergio Pereira, Asad Khattak, Margarida Coelho.
The Impact of Narrow Lane on Safety of the Arterial Roads – 16-6703, Hyeonsup Lim, Lee Han, Asad Khattak.
Enhancement to Self-Learning License Plate Matching Algorithm: Derived Association Matrixes – 16-1587, Stephanie Hargrove, Hyeonsup Lim, Lee Han.
Empirical Study of the Evaluation of Travel Speed Data Accuracy – 16-6786, Stephanie Hargrove, Hyeonsup Lim, Philip Freeze, Lee Han.
Impacts of HOV Violations: Simulation-Based Study in Tennessee – 16-0398, JJ Yang, Lee Han, Stephanie Hargrove.
A Spatial-Temporal Approach for High Resolution Traffic Flow Imputation – 16-1404, JJ Yang, Lee Han, Shih-Miao Chin, Ho-Ling Hwang.
Migrating Toward Using Electric Vehicle on Campus-Proposed Method for Fleet Optimization – 16-1703, Taekwan Yoon, Christopher Cherry, Megan Ryerson, John Bell.
Agarwal, N. and A. Kirk. Application of VISSIM Basic Tools to Simulate Emergency Preemption. Road Safety & Simulation International Conference Paper.
Wu, J., Radwan, E., Abou-Senna, H. Assessment of pedestrian-vehicle conflicts with different potential risk factors at midblock crossings: A driving simulator study Transportation Research Board 96th Annual Meeting.
Wu, J., Radwan, E. and Abou-Senna, H. Assessment of pedestrian-vehicle conflicts with different potential risk factors at midblock crossings: A driving simulator study Transportation Research Board 96th Annual Meeting.
Bae B., Gray Areas in Isolated Intersection Control Type Selection: A Complementary Decision Support Tool, Presentation at the TSITE Summer Meeting held July 29-31 2023 in Gatlinburg, TN.
Wali, B. Exploring Non-Linear Dependencies in Correlates of Rural Two-Way Two-Lane Road Crashes: A Hybrid Statistical-Machine Learning Approach, Presentation at the TSITE Summer Meeting held July 29-31 in Gatlinburg, TN.
Boggs, A. Shortage of Commercial Vehicle Parking Influence on Interstate Ramp Crashes in Tennessee, Presentation at the TSITE Summer Meeting held July 29-31 in Gatlinburg, TN.
Hezaveh, A., Azad, M., and Cherry, C., Pedestrian Crashes in Tennessee; A Data Mining Approach, 18-01507, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Weber, J., Azad, M., Riggs, W., and Cherry, C., The Convergence of Smartphone Apps and Competition to Increase Cycling, 18-02631, presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Boakye K., A. Khattak, B. Wali, S. Nambisan, Are Education and Enforcement Strategies Effective in Increasing Night-Time Seat Belt Use? Evidence from a Large-Scale Before-After Observational Study, 18-06451, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Ahmed M., M. Hoque, J. Rios-Torres, & A. Khattak, A Cooperative Freeway Merge Assistance System using Connected Vehicles, 18-05614, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Arvin R., M. Kamrani, & A. Khattak, & J. Rios-Torres, Safety Impacts of Automated Vehicles in Mixed Traffic, 18-00088, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Ahmed M., A. Hoque, & A. Khattak, Intersection Approach Advisory Through V2X Technology Using Signal Phase and Timing (SPaT) Information at Fixed-Time Signalized Intersection, 18-05804, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Wali B., A. Khattak, & M. Zhang, Injury Severity Analysis of Pedestrian and Bicyclist Trespassing Crashes at Non-Crossings: Application of Predictive Text Analytics, 18-00209, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Kamrani M., A. Khattak, & T. Li, A Framework to Process and Analyze Driver, Vehicle and Road Infrastructure Volatilities in Real-time, 18-00979, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Hoque A., M. Ahmed, J. Rios-Torres, A. Khattak, & R. Arvin, Impact of Vehicle-to-Vehicle Communication Reliability on Safety Applications: An Experimental Study, 18-05532, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Zhang M. & A. Khattak, Identifying and Analyzing Extreme Lane Change Events Using Basic Safety Messages in a Connected Vehicle Environment, 18-04734, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Zhang M., A. Khattak, & E. Shay, Analysis of Crashes Involving Pedestrians across the United States: Implications for Connected and Automated Vehicles, 18-04721, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Wali B., A. Khattak, D. Chimba, J. Waters, & X. Li, Development of Safety Performance Functions for Tennessee: Unobserved Heterogeneity & Functional Form Analysis, 18-00065, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Wali B., A. Khattak, & X. Li, Exploring Non-Linear Dependencies in Correlates of Roadway Crashes: Application of Generalized Additive and Piecewise Linear Count Data Models, 18-00064, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Boakye K., A. Khattak, & S. Nambisan, Correlates of Front-Seat Passengers’ Non-Use of Seatbelts at Night, 18-00405, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Khattak A., B. Wali, & H. Bozdogan, How is Driving Volatility Related to Intersection Safety in a Connected Vehicles Environment? 18-00058, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Kamrani M., R. Arvin, & A. Khattak, What measures of driving volatilities best explain crash frequency at intersections? 18-00089, Presented at Transportation Research Board annual meeting, National Academies, Washington, D.C., 2018.
Lautala P., Dick T., Railway Engineering Education Symposium: Evolving to Rebuild a Growing Rail Academic Community, Transportation Research Board 96th Annual Meeting of the National Academies, Washington, DC
New Probe Data Sources to Measure Cycling Behavior and Safety. Queensland University of Science and Technology CARRS-Q March 6, 2018.
Light Electric Vehicles: Asian and North American experiences. Africa Clean Mobility Week, UNEP. Nairobi Kenya. March 12-16, 2018. (invited).
New Probe Data Sources to Measure Cycling Behavior and Safety. Monash University, Institute of Transport Studies. April 18, 2018.
New Probe Data Sources to Measure Cycling Behavior and Safety. University of Queensland. May 15, 2018.
Do e-bikes belong in a city? Evidence-base for answers to FAQs. Interbike Bosch Electric Theater. Reno NV. Sept 20, 2019.
What We Know and Don’t Know About E-scooters and other Emerging Transportation Modes. Coffee and Conversation Seminar Series. University of North Carolina, Chapel Hill. Chapel Hill, North Carolina, United States of America. Nov 5, 2018.
Knoxville’s early experiments with tactical urbanism. Active Knox Seminar Series, Knoxville, TN. November 27, 2018.
Workshop: What’s That on the Sidewalk?: Safety Issues, Mobility Benefits, and Policy Issues of Emerging Transportation Devices. Workshop organized at the Transportation Research Board Annual Meeting (With John MacArthur), Washington DC. January 13, 2019.
Micromobility is the Future? University of Tennessee Freshmen Honors Program April 17, 2019, Knoxville TN.
Rideables and the Inexprienced Traveler. Coffee and Conversation Seminar Series. University of North Carolina, Chapel Hill. Chapel Hill, North Carolina, United States of America. April 2, 2019.
Electric Scooters: Making Friends, Not Foes. 20th Annual League of American Bicyclists National Bike Summit. Arlington, Virginia, United States of America. Mar 11, 2019.
Infrastructure needs fixing and now: How can Knoxville work toward some fast fixes. Active Knox Seminar Series. Knoxville TN. May 23, 2019
E-bikes: The future of urban mobility. Keynote Go Bike MTL Festival. Montreal Quebec. May 30, 2019.
Workshop: Emerging Technologies for Micro-mobility: What do we know, what do we not know, and what do we do? Workshop organized at the ITE International Meeting, Austin TX. July 24, 2019 (co-organized with Laura Sandt)
Clarke, D.B., “Railway Industry: Overview,” Invited Lecture, CE 355, Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, November 13, 2018.
Clarke, D.B., “In-Track Measurements of Crosstie-Ballast Interfacial Pressure Magnitudes and Distributions with Varying Train Operational Conditions”, poster session, International Conference on Transportation & Development 2019, American Society of Civil Engineers, Alexandria, VA, June 10, 2019.
Clarke, D.B., “Competitive Challenges for the Major Freight Rail Systems in the United States”, International Conference on Transportation & Development 2019, American Society of Civil Engineers, Alexandria, VA, June 12, 2019.
Watts, T.J., Rose, J.G., Clarke, D.B., and Russell, E., “In-Track Crosstie/Ballast Interfacial Pressure Measurements and Comparisons with Wild Measurements,” 98th Transportation Research Board (TRB) Annual Meeting, Washington, D.C., January 13-17, 2019.
Clarke, D.B., Rose, J.G., Watts, T.J., and Russell, E., “In-Track Measurements of Crosstie-Ballast Interfacial Pressure Magnitudes and Distributions with Varying Train Operational Conditions”, International Conference on Transportation & Development 2019, American Society of Civil Engineers, Alexandria, VA, June 2019.
Watts, T.J., Rose, J.G., Russell, E.J., and Clarke, D.B., “Static and Dynamic Crosstie-Ballast Interfacial Pressure Measurements using FRA Research Test Train”, Railway Engineering 2019, Edinburgh, Scotland, July 2019.
Rose, J.G., Watts, T.J., Russell, E.J., and Clarke, D.B., “Crosstie-Ballast Interfacial Pressure Tests: Development of a Procedure and In-Track Revenue Train Measurements”, Railway Engineering 2019, Edinburgh, Scotland, July 2019.
Urban freight and road safety: Trends and innovative strategies. Azad, M., C. Cherry, J. MacArthur, W. Rose (2020) Exploring the Characteristics of Light Electric Vehicles Performance in Urban Logistics. Transportation Research Record (in Review)
E-bikes: The future of urban mobility. Keynote Go Bike MTL Festival. Montreal Quebec. May 30, 2019.
Workshop: Emerging Technologies for Micro-mobility: What do we know, what do we not know, and what do we do? Workshop organized at the ITE International Meeting, Austin TX. July 24, 2019 (co-organized with Laura Sandt)
Wen, Y., Cherry, C., Bassett Jr, D. Thorsen, T., Zhang, S., Weinhandl, J., Brakewood, C., Morse, J. (2019). Evaluating the Physical Activity Impacts of Riding Electric Kick Scooters. Conference on Health and Active Transportation. December 3, 2019. Washington D.C.
Wen, Y., Shah, N., Cherry, C. (2019). Infrastructure Challenges for designing Roads for small Wheel Transportation such as Electric Scooters: A Complete Streets Perspective. International Cycling Safety Conference. November 18-20, 2019. Brisbane, Queensland, Australia.
Wen, Y., Cherry, C., Darling, W., Shah, N. (2019). Material Inventory of a Commercially-used Shared Electric Kick Scooters: A Key Step towards the Understanding of the Overall Environmental Footprint of Shared Micro-mobility Devices. LCA XIX Conference. September 23-25, 2019. Tucson, Arizona.
Understanding micromobility safety behavior and standardizing safety metrics for transportation systems integration. Wen, Y., He, K., Azad, M., Cherry, C. (2019). Use-phase Sustainability Impacts of Dockless Bike Share and Other Shared Mobilities. Tennessee Sustainable Transportation Forum and Expo. September 30, 2019. Knoxville, Tennessee.
Driver impairment detection and safety enhancement through comprehensive volatility analysis. Arvin, R., & Khattak, A. J. “Driving impairments and Duration of distractions: Assessing Crash Risk by Harnessing Microscopic Naturalistic Driving Data”. Under review in Transportation Research Board 99th Annual Meeting 2020.
Developing a taxonomy of human errors & violations that lead to crashes. Khattak, A., Wali, B., Ahmad, N. A Taxonomy of Driving Errors and Violations and Its Variations Across Different Land-Use Contexts – A Path Analysis Approach, Collaborative Science Center for Road Safety Safe Systems Summit, Durham, North Carolina. April, 2019.
Developing a taxonomy of human errors & violations that lead to crashes. Khattak, A., Wali, B., Ahmad, N. A Taxonomy of Driving Errors and Violations and Its Variations Across Different Land-Use Contexts – A Path Analysis Approach, Collaborative Science Center for Road Safety Safe Systems Summit, Durham, North Carolina. April, 2019.
Opioids at the health and transportation safety nexus. Shiue, K. R. Naumann, A. Hezaveh, S. Marshall, C. Cherry (2019). Understanding Opioid Use and Motor Vehicle Crash Injury: Evaluating the Current Landscape and Linkage Potential of Prescription Drug Monitoring Program and Crash Databases. Opioid Misuse & Overdose Prevention Summit. Raleigh, NC. June 11-12, 2019
Integrating spatial safety data into transportation planning processes. Amin Mohamadi Hezaveh Dissertation: Incorporating The Home Address of Road Users Involved in Traffic Crashes in Road Safety Analysis
Khattak, A., Social influence on driver decisions using modeling and gossip algorithms, Plenary Session Invited Talk, 19th COTA International Conference of Transportation Professionals, CICTP. 2019: Southeast University, Nanjing, China.
Zhang, Y., H. Qi, H. Li, C. Cherry, L. Han (2018) Scheduling for timely passenger delivery in a large scale ride sharing system. 97th Annual Meeting of the Transportation Research Board. Washington D.C. January 7-11, 2018.
Yang, H., F. Su, X, Liu, C. Cherry, Y. Liu (2018) Motivational factors underlying e-bike users’ intention to run the red light. 97th Annual Meeting of the Transportation Research Board. Washington D.C. January 7-11, 2018.
Wen, Y., Shah, N., Cherry, C. (2019). Infrastructure Challenges for designing Roads for small Wheel Transportation such as Electric Scooters: A Complete Streets Perspective. International Cycling Safety Conference. November 18-20, 2019. Brisbane, Queensland, Australia.
Wen, Y., M. Azad, C. Cherry (2020) Quantification of Parking Impacts on Land Use on University Campuses Transportation Research Board Annual Meeting (in Review)
Wen, Y., He, K., Azad, M., Cherry, C. (2019). Use-phase Sustainability Impacts of Dockless Bike Share and Other Shared Mobilities. Tennessee Sustainable Transportation Forum and Expo. September 30, 2019. Knoxville, Tennessee.
Wen, Y., Cherry, C., Darling, W., Shah, N. (2019). Material Inventory of a Commercially-used Shared Electric Kick Scooters: A Key Step towards the Understanding of the Overall Environmental Footprint of Shared Micro-mobility Devices. LCA XIX Conference. September 23-25, 2019. Tucson, Arizona.
Wen, Y., Cherry, C., Bassett Jr, D. Thorsen, T., Zhang, S., Weinhandl, J., Brakewood, C., Morse, J. (2019). Evaluating the Physical Activity Impacts of Riding Electric Kick Scooters. Conference on Health and Active Transportation. December 3, 2019. Washington D.C.
Wen, Y., Azad, M., Cherry, C. (2019). Rethinking Parking on College Campuses: What have University Parking Policies Taught us regarding Minimizing Parking Impacts on Land Use? Philosophy of the City Conference. October 6, 2019. Detroit, Michigan
Weber, J., M. Azad, W. Riggs, C. Cherry (2018) The convergence of smartphone apps and competition to increase cycling. 97th Annual Meeting of the Transportation Research Board. Washington D.C. January 7-11, 2018.
Shiue, K. R. Naumann, A. Hezaveh, S. Marshall, C. Cherry (2019). Understanding Opioid Use and Motor Vehicle Crash Injury: Evaluating the Current Landscape and Linkage Potential of Prescription Drug Monitoring Program and Crash Databases. Opioid Misuse & Overdose Prevention Summit. Raleigh, NC. June 11-12, 2019
Merlin, L., C. Cherry, A.M. Hezaveh, E. Dumbaugh (2019) Residential Accessibility’s Relationships with Crash Rates per Capita. 98th Annual Meeting of the Transportation Research Board. Washington D.C. January 13-17, 2019.
Ling, Z., Cherry, C., Wen, Y. (2019). Making the Shift: Attracting Conventional Drivers to Electric Vehicles in China’s Developing Car Market. Conference on Transportation, Economics, Energy and the Environment (TE3). October 18, 2019. Ann Arbor, Michigan, United States of America.
Jordan, S., S. Mishra, M. Golias, T. Welch, C. Cherry (2018) Equity Metrics for Public Transit: Case Studies in Tennessee. 97th Annual Meeting of the Transportation Research Board. Washington D.C. January 7-11, 2018.
Hezaveh, A.M., N. Hoseinzadeh, C.E. Brakewood, C.R. Cherry, L. Han (2019). A literature review on fully autonomous buses. Washington D.C. January 13-17, 2019.
Hezaveh, A.M., M. Azad, C. Cherry (2018) Pedestrian Crashes in Tennessee: A Data Mining Approach. 97th Annual Meeting of the Transportation Research Board. Washington D.C. January 7-11, 2018.
Hezaveh, A.M., J. Everett, T. Nordfjarn, C. Cherry (2019) Considering spatial heterogeneity and time of day self-reported seat belt use. 98th Annual Meeting of the Transportation Research Board Washington D.C. January 13-17, 2019.
Hezaveh, A.M., C. Cherry (2019) Likelihood of Involvement in Traffic Crashes: Introducing Home-Based Approach. Washington D.C. January 13-17, 2019.
Hezaveh, A.M., C. Cherry (2018) Comprehensive cost of traffic crashes at a zonal level. 98th Annual Meeting of the Transportation Research Board, Washington D.C. January 7-11, 2018.
