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Darcy M Bullock

Lyles Family Professor of Civil Engineering and Director of the Joint Transportation Research Program

Purdue University
Lyles School of Civil Engineering
550 Stadium Mall Drive
West Lafayette, IN 47907-2051

Office: HAMP 4107
Phone: (765) 494-2226
Email: darcy@purdue.edu

Education
Ph.D., Carnegie Mellon University
M.S.C.E., Carnegie Mellon University
B.S.C.E., University of Vermont

Research Summary
Intelligent transportation systems, real time traffic control, image based vehicle detection, traffic operations, traffic safety.

Selected Research Projects

Recovering Full Repair Costs of INDOT Infrastructure Damaged by Motor Vehicle Crashes, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Procurement Procedures and Specifications for Performance Measure Capable Traffic Infrastructure Data Collection Systems, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Evaluation of Probe Vehicle Travel Time Using Commercial Wireless Magnetometer Detection Technology, Sensys Networks.


Airport Wait Time Sensing Technology Training Seminar, Department of Homeland Security/Transportation Security Administration.


Airport Wait Time Measurement Techniques George Bush Intercontinental Airport, Derek Consulting Group/Houston Airport System.


Traffic Operations Mobility Measures, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Best Analysis Practices for Roundabouts on State Highways, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Alternatives to Raised Pavement Markers, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Anonymous Traffic Probes Estimating Travel Time and Origin-Destinations using Bluetooth IDs USDOT Phase 2: DTRT57–09-C-10018.


Morgantown, WV ACS-Lite Evaluation, Marshal University (USDOT Funding).


Traffic Signal Timing Manual, National Cooperative Highway Research Program (NCHRP 3-103).


Active Corridor Management, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Assessment of Cincinnati Airport (CVG) Security Checkpoint Wait Times, Kenton County Airport Board.


Traffic Signal Systems Operations and Management Transportation Pooled Fund Study (TPR-5258).


Evaluation of Alternative Intersections and Interchanges, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Real Time Traffic Mobility Measures, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Culvert Inspection and Data Management, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Project Number 8 – Aviation Rumble Strips to Enhance Aviation Safety, Federal Aviation Administration PEGASAS Center.


LTAP Signal Systems, Indiana Department of Transportation (LTAP).


Sensor Fusion for Off-Line and Real-Time Traffic Analysis, Traffax, Inc.


Trafficware Valence Pod Detection System INDOT Evaluation, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Identifying Effects and Applications of Fixed and Variable Speed Limits, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Virtual Construction Inspection Technology, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Implementation of Weigh in Motion Data Quality Control and Real-Time Dashboard Development, Indiana Department of Transportation and Federal Highway Administration (JTRP).


Assessment of Alternative Rumble Stripe Construction, Indiana Department of Transportation and Federal Highway Administration (JTRP).


PennDOT: Implementation of Probe Data Performance Measures, Pennsylvania Department of Transportation.


NCHRP 03-122: Performance Based Management of Traffic Signals” National Cooperative Highway Research Program.

Professional Registration
Registered Professional Engineer in Indiana & Louisiana

Honors & Awards

American Society of Civil Engineers, Journal of Transportation Engineering, Best Paper Award, 1992.


Walter L. Huber Civil Engineering Prize, American Society of Civil Engineers, 2002.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2005.


Purdue University Faculty Scholar, 2005-2010.


Transportation Research Board, D. Grant Mickle, Best Paper Award in the Area of Operations and Maintenance, January 2006.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2007.


Institute of Transportation Engineers, Traffic Engineering Council Best Paper Award, August 2008.


American Society of Civil Engineers Wellington Prize, 2010.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2010.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2011.


Governor's Public Sector Achievement Award JTRP Project "Recovering Full Repair Costs on INDOT Infrastructure Damaged by Motor Vehicle Crashes." May 2012 (Prof. Bullock, Principal Investigator).


Purdue University Faculty Award for Leadership in Open Access, October 2012.


AASHTO President's Award for Performance Excellence JTRP Project "Recovering Full Repair Costs on INDOT Infrastructure Damaged by Motor Vehicle Crashes." October 2012 (Prof. Bullock, Principal Investigator).


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2013.


Institute of Transportation Engineers Management & Operations/Intelligent Transportation Systems Council 2013 Project Achievement Award. The award recognizes 2011 Indiana Mobility Report (http://docs.lib.purdue.edu/imr/). August 2013. (Prof. Bullock, Principal Investigator)


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2014.


Purdue University Office of Engagement: Corps of Engagement Award, May 2014.


Purdue College of Engineering Faculty Awards of Excellence: 2015 Team Award - Joint Transportation Research Program (JTRP) and Indiana Local Technical Assistance Program (LTAP), April 2015.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2016.


Pioneering Innovation Award from Utah Department of Transportation for development of Signal Performance Measures. January 2016.


Purdue University Office of Engagement: Faculty Engagement Fellow Award, May 2016.


UDOT Innovation Award from Utah Department of Transportation for Moab Adaptive Signal Control Project. November 2016.


Transportation Research Board, Traffic Signal Systems Committee (AHB25), Best Paper Award, January 2017.

Selected Publications

Brennan, T.M., J.M. Ernst, C.M. Day, D.M. Bullock, J.V. Krogmeier, and M. Martchouk, "Influence of Vertical Sensor Placement on Data Collection Efficiency from Bluetooth MAC Address Collection," ASCE Journal of Transportation Engineering, Vol. 136, No. 12, pp. 1104-1109, December 2010. DOI: 10.1061/(ASCE)TE.1943-5436.0000178.


Bullock, D.M., R.J. Haseman, J.S. Wasson, and R. Spitler, "Automated Measurement of Wait Times at Airport Security: Deployment at Indianapolis International Airport, Indiana," Transportation Research Record: Journal of the Transportation Research Board, No. 2177, Transportation Research Board of the National Academies, Washington, D.C., 2010, pp. 60-68. DOI: 10.3141/2177-08.


Haseman, R.J., J.S. Wasson, and D.M. Bullock, "Real-Time Measurement of Travel Time Delay and in Work Zones and Evaluation Metrics Using Bluetooth Probe Tracking," Transportation Research Record: Journal of the Transportation Research Board, No. 2169, Transportation Research Board of the National Academies, Washington, D.C., 2010, pp. 40-53. DOI: 10.3141/2169-05.


Brennan, T.M., C.M. Day, J.R. Sturdevant, E. Raamot, and D.M. Bullock, "Track Clearance Performance Measures for Railroad-Preempted Intersections," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 64-76, 2010 (Received TRB AHB25 Committee 2010 Best Paper Award). DOI: 10.3141/2192-06.


Day, C.M., H. Premachandra, T.M. Brennan, J.R. Sturdevant, and D.M. Bullock, "Operational Evaluation of Wireless Magnetometer Vehicle Detectors at Signalized Intersection," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 11-23, 2010. DOI: 10.3141/2192-02.


Day, C.M., J.R. Sturdevant, and D.M. Bullock, "Outcome-Oriented Performance Measures for Management of Signalized Arterial Capacity," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 24-36, 2010. DOI: 10.3141/2192-03.


Brennan, T.M., E.A. Hulme, C.M. Day, J.R. Sturdevant, T. Overman, J. Kruger, and D.M. Bullock, "Decision Tree Model to Prioritize Signalized Intersections Near Highway-Railroad Crossings for Railroad Interconnect," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 116-126, 2010. DOI: 10.3141/2192-11.


Ernst, J.M., D. Lamba, J.V. Krogmeier, and D.M. Bullock, "Crosstalk Detection in Signalized- Intersection Loop Detectors," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 50-63, 2010. DOI: 10.3141/2192-05.


Day, C.M., R.J. Haseman, H. Premachandra, T.M. Brennan, J.S. Wasson, J.R. Sturdevant, and D.M. Bullock, "Evaluation of Arterial Signal Coordination: Methodologies for Visualizing High-Resolution Event Data and Measuring Travel Time," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp. 37-49, 2010. DOI: 10.3141/2192-04.


Quayle, S.M., P.Koonce, D. Depencier, and D.M. Bullock, "Arterial Performance Measures with Media Access Control Readers: Portland, Oregon, Pilot Study," Transportation Research Record: Journal of the Transportation Research Board, No. 2192, Transportation Research Board of the National Academies, Washington, D.C., pp.185-193, 2010. DOI: 10.3141/2192-18.


Ndoye M., V.F. Totten, J. V. Krogmeier, and D. M. Bullock, "Sensing and Signal Processing for Vehicle Re-identification and Travel Time Estimation," IEEE Transactions on Intelligent Transportation Systems, Vol:12, Issue 1, pp.119-131, March 2011. DOI: 10.1109/TITS.2010.2092769.


Brennan, T., C.M. Day, J. Wasson, J. Sturdevant, and D.M. Bullock "Assessing Opportunities and Benefits of Alternative Winter Operation Timing Plans for Signalized Arterials," ITE Learned Journal of Transportation, Vol. 1, Issue 1, March 2011. TRB Paper 11-0010.


Remias, S. S.M.L. Hubbard, E. Hulme, A. Hainen, G. Farnsworth, and D.M. Bullock, "Bias, Repeatability, and Variability of 1 Traffic Sign Retroreflectivity," ITE Learned Journal of Transportation, Vol. 1, Issue 1, March 2011. ITE


Ndoye M., A. M. Barker, J. V. Krogmeier, and D. M. Bullock, "A Recursive Multi-Scale Correlation-Averaging Algorithm for an Automated Distributed Road Condition Monitoring System," IEEE Transactions on Intelligent Transportation Systems, Vol.12, Issue 3, pp.795-808, April 2011. DOI: 10.1109/ITSC.2009.5309749.


D.M. Bullock, C.M. Day, T.M. Brennan, J.R. Sturdevant, J.S. Wasson, "Architecture for Active Management of Geographically Distributed Signal Systems," ITE Journal of Transportation, pp. 20-24, May 2011. Accession Number: 01352868.


Sharma, A., D.M. Bullock, and S. Peeta, "Estimating Dilemma Zone Hazard Function at High Speed Isolated Intersection," Transportation Research Part C, Vol. 19, Issue 3, pp.400-412 June 2011. DOI: 10.1016/j.trc.2010.05.002.


Wasson, J.S, G.W. Boruff, A.M. Hainen, S.M. Remias, E.A. Hulme, G.Farnsworth, and D.M. Bullock, "Evaluation of Spatial and Temporal Speed Limit Compliance in Highway Workzones," Transportation Research Record: Journal of the Transportation Research Board, No. 2258, Transportation Research Board of the National Academies, Washington, D.C.,pp.1-15 2011. DOI: 10.3141/2258-01.


Ernst, J., J.V. Krogmeier, and D.M. Bullock, "Acceleration Estimation and Signature Matching Travel Time Estimation Enhancement for Standard Electromagnetic Vehicle Detectors," Transportation Research Record: Journal of the Transportation Research Board, No. 2243, Transportation Research Board of the National Academies, Washington, D.C., pp.27-37, 2011. DOI: 10.3141/2243-04.


Martchouk, M., F.L. Mannering, and D.M. Bullock, "Analysis of Freeway Travel Time Variability Using Bluetooth Detection," ASCE Journal of Transportation, Vol. 137, No. 10, pp. 697-704, October, 2011. DOI: 10.1061/(ASCE)TE.1943-5436.0000253.


Barry, B.E., V.P. Drnevich, A. Irfanoglu, and D. Bullock, "Summary of Developments in the Civil Engineering Capstone Course at Purdue University," ASCE Journal of Professional Issues in Engineering Education and Practice, Vol. 138, No. 1, pp. 95-98, January 2012. DOI: 10.1061/(ASCE)EI.1943-5541.0000084.


Smaglik, E.J., D.M. Bullock, D. Gettman, C.M. Day, and H. Premachandra, "Comparison of Alternative Real-Time Performance Measures for Measuring Signal Phase Utilization and Identifying Oversaturation," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp.123-131, 2011. DOI: 10.3141/2259-11.


Day, C.M., T.M. Brennan, A.M. Hainen, S.M. Remias, H. Premachandra, J.R. Sturdevant, G. Richards, J.S. Wasson, and D.M. Bullock, "Reliability, Flexibility, and Environmental Impact of Alternative Objective Functions for Arterial Offset Optimization ," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp. 8-22, 2011. DOI: 10.3141/2259-02.


Day, C.M., T.M. Brennan, H. Premachandra, J.R. Sturdevant, and D.M. Bullock, "Analysis of Peer Data on Intersections for Decisions About Coordination of Arterial Traffic Signal," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp. 23-36, 2011. DOI: 10.3141/2259-03.


Day, C.M. and D.M. Bullock, "Computational Efficiency of Alternative Algorithms for Arterial Offset Optimization," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp. 37-47, 2011. DOI: 10.3141/2259-04.


Brennan, T.M., C.M. Day, J.R. Sturdevant, and D.M. Bullock, "Visual Education Tools to Illustrate Coordinated System Operation," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp. 59-72, 2011. DOI: 10.3141/2259-06. (Received TRB AHB25 Committee 2011 Best Paper Award).


Remias, S, A. Hainen, Mitkey, S., D.M. Bullock "Probe Vehicle Re-Identification Data Accuracy Evaluation," IMSA Journal, pp. 48-59, July/August 2012. IMSA


Hainen, A.M., J.S. Wasson, S.M.L. Hubbard, S.M. Remias, G.D. Farnsworth, and D.M. Bullock, "Estimating Route Choice and Travel Time Reliability with Field Observations of Bluetooth Probe Vehicles," Transportation Research Record: Journal of the Transportation Research Board, No. 2256, Transportation Research Board of the National Academies, Washington, D.C., pp. 43-50, 2011. DOI: 10.3141/2256-06.


Sharma, A., D.M. Bullock, S. Velipasalar, M. Casares, J. Schmitz, and N. Burnett, "Improving Safety and Mobility at High Speed Intersections with Innovations in Sensor Technology," Transportation Research Record: Journal of the Transportation Research Board, No. 2259, Transportation Research Board of the National Academies, Washington, D.C., pp. 253-263, 2011. DOI: 10.3141/2259-24.


Ernst J., J. V. Krogmeier, and D. M. Bullock, "Maximum-Likelihood Acceleration Estimation from Existing Roadway Vehicle Detectors," IEEE Transactions on Intelligent Transportation Systems, Vol: 13, Issue: 2, June 2012. DOI: 10.1109/TITS.2011.2181947.


T.M. Brennan, B.D. Griggs, G. Grimmer, A.M. Hainen, C.M. Day, J.R. Sturdevant, and D.M. Bullock. "Defining Design Space for Parameters of Traffic Signal Timing," Transportation Research Record: Journal of the Transportation Research Board of the National Academies, No. 2311, Washington, D.C., pp. 85-98, 2012. DOI: 10.3141/2311-08.


C.M. Day, J.M. Ernst, T.M. Brennan, C. Chou, A.M. Hainen, S.M. Remias, A. Nichols, B.D. Griggs, and D.M. Bullock. "Performance Measures for Adaptive Signal Control: Case Study of Central System-in-the-Loop Simulation," Transportation Research Record: Journal of the Transportation Research Board, No. 2311, Transportation Research Board of the National Academies, Washington, D.C., pp. 1-15, 2012. DOI: 10.3141/2311-01.


C.M. Day and D.M. Bullock. "Calibration of Platoon Dispersion Model with High-Resolution Signal Event Data," Transportation Research Record: Journal of the Transportation Research Board, No. 2311, Transportation Research Board of the National Academies, Washington, D.C., pp. 16-28, 2012. DOI: 10.3141/2311-02.


J. Grossman, A.M. Hainen, S.M. Remias, and D.M. Bullock. "Evaluation of Thermal Image Video Sensors for Stop Bar Detection at Signalized Intersections," Transportation Research Record: Journal of the Transportation Research Board, No. 2308, Transportation Research Board of the National Academies, Washington, D.C., pp. 184-198, 2012. DOI: 10.3141/2308-20.


Mitkey, S.R, T.M. Brennan, S.M. Remias, A.D. Davis, G.M. Grimmer, A.M. Hainen, R. Morris, P. Michael and D.M. Bullock, "Comparison of the Retroreflective Durability Between Rumble Stripes and Painted Lines," ITE Learned Journal of Transportation, Vol. 3, Issue 1, July 2012.


M.P. Newton, D.M. Bullock, C. Watkinson, P.J. Bracke, and D. Horton. "Engaging New Partners in Transportation Research: Integrating Publishing, Archiving, Indexing of Technical Literature into the Research Process," Transportation Research Record: Journal of the Transportation Research Board, No. 2291, Transportation Research Board of the National Academies, Washington, D. C., pp. 111-123, 2012. DOI: 10.3141/2291-13.


J.M. Ernst, C.M. Day, J.V. Krogmeier, and D.M. Bullock. "Probe Data Sampling Guidelines for Characterizing Arterial Travel Time," Transportation Research Record: Journal of the Transportation Research Board, No. 2315, Transportation Research Board of the National Academies, Washington, D.C., pp. 173-181, 2012. DOI: 10.3141/2315-18.


Day, C.M., J. Sturdevant, H. Li, A. Stevens, A.M. Hainen, S.M. Remias and D.M. Bullock, "Revisiting the Cycle Length-Lost Time Question With Critical Lane Analysis," Transportation Research Record: Journal of the Transportation Research Board, No. 2355, Transportation Research Board of the National Academies, Washington, D.C., pp. 1-9, 2013. DOI: 10.3141/2355-01. (Received TRB AHB25 Committee 2013 Best Paper Award)


Hainen, A.M., E.M. Rivera-Hernandez, C.M. Day, M. McBride, G. M. Grimmer, A.J. Loehr, and D.M. Bullock, "Roundabout Critical Headway Measurement based on Hi-Resolution Event-Based Data from Wireless Magnetometers," Transportation Research Record: Journal of the Transportation Research Board, No. 2389, Transportation Research Board of the National Academies, Washington, D.C., pp. 51-64, 2013. DOI: 10.3141/2389-06.


Brennan, T.M., S.M. Remias, G.M. Grimmer, D.K. Horton, E. D. Cox, and D.M. Bullock, "Probe Vehicle Based Statewide Mobility Performance Measures for Decision Makers," Transportation Research Record: Journal of the Transportation Research Board, No. 2338, Transportation Research Board of the National Academies, Washington, D.C., pp. 78-90, 2013. DOI: 10.3141/2338-09.


Li, H., A.M. Hainen, C.M. Day, G. Grimmer, J. Sturdevant, and D.M. Bullock, "Longitudinal Performance Measures for Assessing Agency-Wide Signal Management Objectives," Transportation Research Record: Journal of the Transportation Research Board, No. 2355, Transportation Research Board of the National Academies, Washington, D.C., pp. 20-30, 2013. DOI: 10.3141/2355-03.


Remias, S.M., A.M. Hainen, C.M. Day, T.M. Brennan, H. Li, E. Rivera-Hernandez, J. Sturdevant, S.E. Young, and D.M. Bullock, "Performance Characterization of Arterial Traffic Flow with Probe Vehicle Data," Transportation Research Record: Journal of the Transportation Research Board, No. 2380, Transportation Research Board of the National Academies, Washington, D.C., pp. 10-21, 2013. DOI: 10.3141/2380-02.


Remias, S.M., A.M. Hainen, and D.M. Bullock, "Leveraging Probe Data to Assess Security Checkpoint Wait Times," Transportation Research Record: Journal of the Transportation Research Board, No. 2325, Transportation Research Board of the National Academies, Washington, D.C., pp. 63-75, 2013. DOI: 10.3141/2325-07.


Hainen, A.M., S.M. Remias, D.M. Bullock, F.L. Mannering. "A hazard-based analysis of airport security transit times," Journal of Air Transport Management, Volume 32, pp. 32-38, September 2013. DOI: 10.1016/j.jairtraman.2013.06.002.


Ernst, J.; Krogmeier, J.; Bullock, D., "Estimating Required Probe Vehicle Re-identification Requirements for Characterizing Link Travel Times," Intelligent Transportation Systems Magazine, IEEE , vol.6, no.1, pp.50-58, Spring 2014 .DOI:11.1109/MITS.2013.2288648.


Day, Christopher, M. and D.M. Bullock, "Design Guidelines and Conditions that Warrant Deploying Fully Actuated Coordination," Transportation Research Record: Journal of the Transportation Research Board, No. 2439, Transportation Research Board of the National Academies, Washington, D.C., pp. 1-11, October 2014. DOI: 10.314/2439-01. (Received TRB AHB25 Committee 2014 Best Paper Award).


Bullock, D.M.; Clayton, R.; Mackey, J.; Misgen, S; Stevens, A.; Sturdevant, J.; Taylor, M., "Automated Traffic Signal Performance Measures - Helping Traffic Engineers Manage Data to Make Better Decisions," ITE Journal of Transportation, pp. 33-39, March 2014.


Freije, Richard, S., A.M Hainen, A.L. Stevens, H. Li, W.B. Smith, H.T. Summers, C.M. Day, J.R. Sturdevant and D.M. Bullock, "Graphical Performance Measures for Practitioners to Triage Split Failure Trouble Calls," Transportation Research Record: Journal of the Transportation Research Board, No. 2439, Transportation Research Board of the National Academies, Washington, D.C., pp. 27-40, October 2014. DOI: 10.3141/2439-03.


Remias, Stephen, M., T.M. Brennan, C.M. Day, H.T. Summers, D.K. Horton, E.D. Cox and D.M. Bullock, "Spatially Referenced Probe Data Performance Measures for Infrastructure Investment Decision Makers," Transportation Research Record: Journal of the Transportation Research Board, No. 2420, Transportation Research Board of the National Academies, Washington, D.C., pp. 33-44, August 2014. DOI: 10.3141/2420-04.


Zilinski, Lisa, D., D.A. Scherer, Jr., D.M. Bullock, D.K. Horton and C.E. Matthews, "Evolution of Data Creation, Management, Publication, and Curation in the Research Process," Transportation Research Record: Journal of the Transportation Research Board, No. 2414, Transportation Research Board of the National Academies, Washington, D.C., pp. 9-19, August 2014. DOI: 10.3141/2414-02.


Hainen, Alexander, M., A.L. Stevens, R.S. Freije, C.M. Day, J.R. Sturdevant and D.M. Bullock, "High-Resolution Event-Based Data at Diamond Interchanges: Performance Measures and Optimization of Ring Displacement," Transportation Research Record: Journal of the Transportation Research Board, No. 2439, Transportation Research Board of the National Academies, Washington, D.C., pp. 12-26, October 2014. DOI: 10.3141/2439-02.


Lavrenz, Steven, M., A.M. Hainen, A.L. Stevens, C.M. Day, H. Li, R.S. Freije, W.B. Smith, H.T. Summers, J.R. Sturdevant and D.M. Bullock, "Improving Intersection Behavior through Delay-Based Left Turn Phase Initiation," Transportation Research Record: Journal of the Transportation Research Board, No. 2439, Transportation Research Board of the National Academies, Washington, D.C., pp. 41-52, October 2014. DOI: 10.3141/2439-04.


Hainen, Alexander, M., H. Li, A.L. Stevens, C.M. Day, J.R. Sturdevant and D.M. Bullock, "Sequence Optimization at Signalized Diamond Interchanges Using High-Resolution Event-Based Data," Transportation Research Record: Journal of the Transportation Research Board, No. 2487, Transportation Research Board of the National Academies, Washington, D.C., pp 15-30, August 2015. DOI: 10.3141/2487-02.


Hainen, Alexander, M., A.L. Stevens, C.M. Day, H. Li, J. Mackey, M. Luker, M. Taylor, J.R. Sturdevant and D.M. Bullock, "Performance Measures for Optimizing Diverging Interchanges and Outcome Assessment with Drone Video," Transportation Research Record: Journal of Transportation Research Board, No. 2487, Transportation Research Board of the National Academies, Washington, D.C., pp. 31-43, August 2015. DOI: 10.3141/2487-03.


Day, Christopher, M., Remias, S.M., H, Li, M.M. Mekker, M.L. McNamara, E.D. Cox and D.M. Bullock, "Performance Ranking of Arterial Corridors Using Travel Time and Travel Time Reliability Metrics," Transportation Research Record: Journal of Transportation Research Board, No. 2487, Transportation Research Board of the National Academies, Washington, D.C., pp. 44-54, August 2015. DOI: 10.3141/2487-04.


Li, Howell, S.M. Lavrenz, C.M. Day, A.L. Stevens and D.M. Bullock, "Use of Both Travel Time and Travel Time Reliability Measures to Quantify Benefits of Signal Timing Maintenance and Optimization," Transportation Research Record: Journal of Transportation Research Board, No. 2487, Transportation Research Board of the National Academies, Washington, D.C., pp. 55-68, August 2015. DOI: 10.3141/2487-05.


Lavrenz, Steven M., C.M. Day, A.M. Hainen, W.B. Smith, A.L. Stevens, H. Li and D.M. Bullock, "Use of Maximum Vehicle Delay to Characterize Signalized Intersection Performance," Transportation Research Record: Journal of Transportation Research Board, No. 2488, Transportation Research Board of the National Academies, Washington, D.C., pp. 41-52, August 2015. DOI: 10.3141/2488-05.


Lavrenz, Steven M., D.M. Bullock, "Opportunities for Enhancing Construction Education and Student Internships Using Multimedia Tools," Transportation Research Record: Journal of Transportation Research Board, No. 2480, Transportation Research Board of the National Academies, Washington, D.C., pp. 20-29, August 2015. DOI: 10.3141/2480-03.


Remias, Stephen M.*, M.M. Mekker, M.L. McNamara, J.R. Sturdevant, E.D. Cox, and D.M. Bullock*, "Assessment of Speed Limit Locations Using Crowdsourced Probe Vehicle Data," Transportation Research Record: Journal of Transportation Research Board, No. 2484, Transportation Research Board of the National Academies, Washington, D.C., pp. 10-22, 2015. DOI: 10.3141/2484-02.


Li, Howell, S.M. Remias, C.M. Day, M.M. Mekker, J.R. Sturdevant, D.M. Bullock, "Shock Wave Boundary Identification Using Cloud-Based Probe Data," Transportation Research Record: Journal of Transportation Research Board, No 2526, Transportation Research Board of the National Academies, Washington, D.C. pp 51-60, 2015. DOI: 10.3141/2526-06.


Day, Christopher M., S.M. Lavrenz, A.L. Stevens, R.E. Miller, and D.M. Bullock, "Extending Link Pivot Offset Optimization to Arterials with Single Controller Diverging Diamond Interchange," Transportation Research Board, Paper No. 16-0111, publication pending.


Day, Christopher M. and D.M. Bullock, "Detector-Free Signal Optimization with Limited Connected Vehicle Market Penetration: A Proof-of-Concept Study," Transportation Research Record: Journal of Transportation Research Board, No. 2558, Transportation Research Board of the National Academies, Washington, D.C. pp 54-65, 2016. DOI: 10.3141/2558-06.


Lavrenz, Steven M., C.M. Day, W.B. Smith, J.R. Sturdevant, and D.M. Bullock, "Assessing Longitudinal Arterial Performance and Traffic Signal Retiming Outcomes," Transportation Research Record: Journal of Transportation Research Board, No. 2558, Transportation Research Board of the National Academies, Washington, D.C. pp 66-77, 2016. DOI: 10.3141/2558-07.


Lavrenz, Steven M., C.M. Day, J. Grossman, R.S. Freije, and D.M. Bullock, "Use of High Resolution Signal Controller Data to Identify Red Light Running," Transportation Research Record: Journal of Transportation Research Board, No. 2558, Transportation Research Board of the National Academies, Washington, D.C. pp 41-53, 2016 . (Received TRB AHB25 Committee 2016 Best Paper Award). DOI: 10.3141/2558-05.


McNamara, Margaret L., J.H. Mott, and D.M. Bullock, "Leveraging Aircraft Avionics for Fleet and Airport Management," Transportation Research Record: Journal of Transportation Research Board, No. 2569, Transportation Research Board of the National Academies, Washington, D.C. pp 32-41, 2016. DOI: 10.3141/2569-04.


Mekker, Michelle M., S.M. Remias, W.A. Bunnell, D.W. Krohn, E.D. Cox, and D.M. Bullock, "Variable Speed Limit Study Upstream of an Indiana Work Zone with Vehicle-Matching," Transportation Research Record: Journal of Transportation Research Board, No. 2555, Transportation Research Board of the National Academies, Washington, D.C. pp 53-64, 2016. DOI: 10.3141/2555-07.


Mott, John H., M. L. McNamara, and D.M. Bullock, "Accuracy Assessment of Aircraft Transponder-Based Devices for Measuring Airport Operations," Transportation Research Record: Journal of Transportation Research Board, No. 2626, Transportation Research Board of the National Academies, Washington, D.C. pp 9-17, 2017. DOI: 10.3141/2626-02.


Wang, Xuesong, T. Fan, W. Li,R. Yu, D. Bullock, B. Wu, and P. Tremont, "Speed variation during peak and off-peak hours on urban arterials in Shanghai," Transportation Research Part C: Emerging Technologies, Volume 67, June 2016, Pages 84-94. DOI: 10.1016/j.trc.2016.02.005.