@article{yeom_rasdorf_rouphail_schroeder_2018, title={Simulation of Work Zones with Lane Closures in Proximity of Freeway Interchanges}, volume={10}, ISSN={["1941-1197"]}, DOI={10.1109/MITS.2018.2842027}, abstractNote={The paper provides methodologies for microscopic simulation modelling of freeway work zones with lane closures in the proximity of interchanges. In addition, the research presents simulation results using calibrated modelling parameters to determine the capacity available for mainline flow under various operating conditions. The results will help researchers or practitioners with designing and studying freeway work zone sites under various lane configurations using better estimates of delays and queue sizes in the proximity of interchanges. Additionally, a 2 to 1 on-ramp merge condition was explored to predict the merge ratios under both demand and service flow conditions. The paper illustrates how ramp demand affects the share of segment capacity available to mainline traffic to reveal strategies for controlling this demand (via ramp metering for example) in order to maintain a prescribed freeway capacity through the work zone. The overall study result indicates the degree to which the presence of a work zone with lane closures decreases the proportion of mainline flow and shows the degree to which differences in work zone lane configurations affect merge and weave scenarios.}, number={3}, journal={IEEE INTELLIGENT TRANSPORTATION SYSTEMS MAGAZINE}, author={Yeom, Chunho and Rasdorf, William and Rouphail, Nagui and Schroeder, Bastian}, year={2018}, pages={184–195} }
 @article{warchol_schroeder_cunningham_2016, title={Impact of exit ramp geometric treatments at diverging diamond interchanges on queue spillback}, number={2556}, journal={Transportation Research Record}, author={Warchol, S. and Schroeder, B. J. and Cunningham, C.}, year={2016}, pages={75–85} }
 @article{vaughan_jagadish_bharadwaj_cunningham_schroeder_hummer_findley_rouphail_2016, title={Long-term monitoring of wrong-way maneuvers at diverging diamond interchanges}, number={2484}, journal={Transportation Research Record}, author={Vaughan, C. and Jagadish, C. and Bharadwaj, S. and Cunningham, C. M. and Schroeder, B. J. and Hummer, J. E. and Findley, D. and Rouphail, N. M.}, year={2016}, pages={129–139} }
 @article{fernandes_bandeira_fontes_pereira_schroeder_rouphail_coelho_2016, title={Traffic restriction policies in an urban avenue: A methodological overview for a trade-off analysis of traffic and emission impacts using microsimulation}, volume={10}, ISSN={["1556-8334"]}, DOI={10.1080/15568318.2014.885622}, abstractNote={ABSTRACT Urban traffic emissions have been increasing in recent years. To reverse that trend, restrictive traffic measures can be implemented to complement national policies. We have proposed a methodology to assess the impact of three restrictive traffic measures in an urban arterial by using a microsimulation model of traffic and emissions integrated platform. The analysis is extended to some alternative roads and to the overall network area. Traffic restriction measures provided average reductions of 45%, 47%, 35%, and 47% for CO2, CO, NOX, and HC, respectively, due to traffic being diverted to other roads. Nevertheless, increases of 91%, 99%, 55%, and 121% in CO2, CO, NOX, and HC, respectively, can be expected on alternative roads.}, number={3}, journal={INTERNATIONAL JOURNAL OF SUSTAINABLE TRANSPORTATION}, author={Fernandes, Paulo and Bandeira, Jorge M. and Fontes, Tania and Pereira, Sergio Ramos and Schroeder, Bastian J. and Rouphail, Nagui M. and Coelho, Margarida C.}, year={2016}, pages={201–215} }
 @article{hartmann_vortisch_schroeder_2015, title={A German approach to freeway facility evaluation}, number={2483}, journal={Transportation Research Record}, author={Hartmann, M. and Vortisch, P. and Schroeder, B. J.}, year={2015}, pages={66–73} }
 @article{aghdashi_hajbabaie_schroeder_trask_rouphail_2015, title={Generating scenarios of freeway reliability analysis hybrid approach}, number={2483}, journal={Transportation Research Record}, author={Aghdashi, S. and Hajbabaie, A. and Schroeder, B. J. and Trask, J. L. and Rouphail, N. M.}, year={2015}, pages={148–159} }
 @article{aghdashi_rouphail_hajbabaie_schroeder_2015, title={Generic speed-flow models for basic freeway segments on general-purpose and managed lanes in undersaturated flow conditions}, number={2483}, journal={Transportation Research Record}, author={Aghdashi, S. and Rouphail, N. M. and Hajbabaie, A. and Schroeder, B. J.}, year={2015}, pages={102–110} }
 @article{yeom_hajbabaie_schroeder_vaughan_xuan_rouphail_2015, title={Innovative work zone capacity models from nationwide field and archival sources}, number={2485}, journal={Transportation Research Record}, author={Yeom, C. and Hajbabaie, A. and Schroeder, B. J. and Vaughan, C. and Xuan, X. Y. and Rouphail, N. M.}, year={2015}, pages={51–60} }
 @article{vaughan_jagadish_bharadwaj_cunningham_schroeder_hummer_findley_rouphail_2015, title={Long-term monitoring of wrong-way maneuvers at diverging diamond interchanges}, number={2484}, journal={Transportation Research Record}, author={Vaughan, C. and Jagadish, C. and Bharadwaj, S. and Cunningham, C. M. and Schroeder, B. J. and Hummer, J. E. and Findley, D. and Rouphail, N. M.}, year={2015}, pages={129–139} }
 @article{bugg_schroeder_jenior_brewer_rodegerdts_2015, title={Methodology to compute travel time of a roundabout corridor}, number={2483}, journal={Transportation Research Record}, author={Bugg, Z. and Schroeder, B. J. and Jenior, P. and Brewer, M. and Rodegerdts, L.}, year={2015}, pages={20–29} }
 @article{zheng_chase_elefteriadou_schroeder_sisiopiku_2015, title={Modeling vehicle-pedestrian interactions outside of crosswalks}, volume={59}, ISSN={["1878-1462"]}, DOI={10.1016/j.simpat.2015.08.005}, abstractNote={Pedestrian and driver behaviors as well as their interactions, are essential in planning, designing and operating highway facilities. Pedestrian crossing outside of a marked or unmarked crosswalk (i.e. jaywalking), is one of those pedestrian behaviors that may highly affect safety and operations. Unlike permissible crossings at crosswalks, jaywalking events are not often anticipated by drivers, which may result in less driver reaction time and different vehicle operation dynamics. It is important to understand pedestrian crossing behavior outside of crosswalks, as well as driver yielding behavior towards them. To date, limited quantitative and behavioral research has been conducted to investigate this interaction or simulate it microscopically. This paper aims to explore both pedestrian jaywalking behavior (gap acceptance and speeds) and the corresponding driver reactions (yielding behavior) for modeling the vehicle–pedestrian interactions (VPI) outside the crosswalks in a micro-simulation environment. The study also quantifies the differences between vehicle–jaywalker and vehicle-permissible crossing. An observational study and an instrumented vehicle study were conducted on the campus of the University of Florida to collect data from pedestrian and driver perspectives, respectively. Crossing speed, yield acceptance and delay of jaywalking crossings and permissible crossings were observed in the study and these attributed can be used for replicating pedestrian operations in simulators. Moreover, behaviors of driver approaching jaywalkers versus pedestrians crossing at designated crosswalks were compared on the basis of yield rates, and vehicle speed profiles. Vehicle yield dynamics were analyzed to model the driver reactions towards jaywalkers. Lastly, it was found that the locations of jaywalking events are highly concentrated and influenced by the crossing environment, such as pedestrian and vehicular volume, bus stops presence and crossing distance. This paper establishes several quantitative relationships describing interactions between pedestrians crossing outside of crosswalks and approaching drivers, which provide the basis and assumptions for modeling such interactions in a micro-simulation environment for traffic operational analyses.}, journal={SIMULATION MODELLING PRACTICE AND THEORY}, author={Zheng, Yinan and Chase, Thomas and Elefteriadou, Lily and Schroeder, Bastian and Sisiopiku, Virginia P.}, year={2015}, month={Dec}, pages={89–101} }
 @article{list_yang_schroeder_2015, title={On the Treatment of Trucks in Roundabout Analyses}, ISSN={["2169-4052"]}, DOI={10.3141/2483-16}, abstractNote={ Trucks are not always addressed explicitly in planning studies and operational analyses, even though they are a very important part of the nation's economic engine. Most planning studies account for trucks as a percentage of the total traffic flow. The Highway Capacity Manual (HCM) converts trucks into autos through the use of a passenger car equivalency (PCE) factor. If the PCE is 2, then a truck is assumed to be equivalent to two autos. However, trucks are beginning to receive more attention, including that in the context of capacity assessments. A recent research effort focused on developing a level-of-service assessment for trucks and for enhancing the way that the impact of trucks is taken into account on freeways, arterials, and roundabouts. This paper focuses on the roundabout aspects of that research. The three roundabout-related objectives in the project were (a) to refine the PCE values used to convert trucks into auto equivalents for the flow on roundabout approaches, (b) to recalibrate the capacity equation so that it more appropriately accounts for trucks, and (c) to develop ways to estimate truck speeds so that travel times through the roundabout could be computed. The results of these analyses are presented as well as the methodology and data employed. }, number={2483}, journal={TRANSPORTATION RESEARCH RECORD}, author={List, George F. and Yang, Bo and Schroeder, Bastian J.}, year={2015}, pages={140–147} }
 @article{holzem_hummer_cunningham_o'brien_schroeder_salamati_2015, title={Pedestrian and bicyclist accommodations and crossings on superstreets}, number={2486}, journal={Transportation Research Record}, author={Holzem, A. M. and Hummer, J. E. and Cunningham, C. M. and O'Brien, S. W. and Schroeder, B. J. and Salamati, K.}, year={2015}, pages={37–44} }
 @article{hajbabaie_rouphail_schroeder_dowling_2015, title={Planning-level methodology for freeway facilities}, number={2483}, journal={Transportation Research Record}, author={Hajbabaie, A. and Rouphail, N. M. and Schroeder, B. J. and Dowling, R.}, year={2015}, pages={47–56} }
 @article{mamidipalli_sisiopiku_schroeder_elefteriadou_salamati_rouphail_2015, title={Probit-based pedestrian gap acceptance model for midblock crossing locations}, number={2519}, journal={Transportation Research Record}, author={Mamidipalli, S. V. and Sisiopiku, V. P. and Schroeder, B. J. and Elefteriadou, L. and Salamati, K. and Rouphail, N. M.}, year={2015}, pages={128–136} }
 @article{salamati_rouphail_frey_liu_schroeder_2015, title={Simplified method for comparing emissions in roundabouts and at signalized intersections}, number={2517}, journal={Transportation Research Record}, author={Salamati, K. and Rouphail, N. M. and Frey, H. C. and Liu, B. and Schroeder, B. J.}, year={2015}, pages={48–60} }
 @article{anya_rouphail_frey_schroeder_2014, title={Application of AIMSUN microsimulation model to estimate emissions on signalized arterial corridors}, number={2428}, journal={Transportation Research Record}, author={Anya, A. R. and Rouphail, N. M. and Frey, H. C. and Schroeder, B.}, year={2014}, pages={75–86} }
 @article{schroeder_salamati_hummer_2014, title={Calibration and field validation of four double-crossover diamond interchanges in VISSIM microsimulation}, number={2404}, journal={Transportation Research Record}, author={Schroeder, B. J. and Salamati, K. and Hummer, J.}, year={2014}, pages={49–58} }
 @article{yeom_schroeder_cunningham_vaughan_rouphail_hummer_2014, title={Lane utilization at two-lane arterial approaches to double crossover diamond interchanges}, number={2461}, journal={Transportation Research Record}, author={Yeom, C. and Schroeder, B. J. and Cunningham, C. and Vaughan, C. and Rouphail, N. M. and Hummer, J. E.}, year={2014}, pages={103–112} }
 @article{aghdashi_schroeder_rouphail_2014, title={Method for scenario selection and probability adjustment for reliability and active traffic management analysis in a highway capacity manual context}, number={2461}, journal={Transportation Research Record}, author={Aghdashi, S. and Schroeder, B. J. and Rouphail, N. M.}, year={2014}, pages={58–65} }
 @article{hummer_milazzo_schroeder_salamati_2014, title={Potential for metering to help roundabouts manage peak period demands in the United States}, number={2402}, journal={Transportation Research Record}, author={Hummer, J. E. and Milazzo, J. S. and Schroeder, B. and Salamati, K.}, year={2014}, pages={56–66} }
 @article{schroeder_rouphail_aghdashi_2013, title={Deterministic framework and methodology for evaluating travel time reliability on freeway facilities}, number={2396}, journal={Transportation Research Record}, author={Schroeder, B. J. and Rouphail, N. M. and Aghdashi, S.}, year={2013}, pages={61–70} }
 @article{sajjadi_schroeder_rouphail_2013, title={Enhancements to the freeway facilities method in the highway capacity manual to enable reliability analysis}, number={2395}, journal={Transportation Research Record}, author={Sajjadi, S. and Schroeder, B. and Rouphail, N. M.}, year={2013}, pages={21–30} }
 @article{salamati_schroeder_geruschat_rouphail_2013, title={Event-based modeling of driver yielding behavior to pedestrians at two-lane roundabout approaches}, number={2389}, journal={Transportation Research Record}, author={Salamati, K. and Schroeder, B. J. and Geruschat, D. R. and Rouphail, N. M.}, year={2013}, pages={1–11} }
 @article{bugg_rouphail_schroeder_2013, title={Lane Choice Model for Signalized Intersections with an Auxiliary Through Lane}, volume={139}, ISSN={["1943-5436"]}, DOI={10.1061/(asce)te.1943-5436.0000513}, abstractNote={AbstractAn auxiliary through lane (ATL) is a commonly used congestion relief measure at signalized intersections in which fiscal and right-of-way constraints do not allow for full widening between intersections. Previously developed models have predicted the flow in the ATL as a function of macroscopic elements, such as through-movement demand and the ratio of average green time to cycle length. However, these models explain neither driver behavior nor motivation to use the ATL, nor can such an approach be used in microscopic simulation models. This paper presents empirically developed models for driver lane choice at signalized intersection approaches with one ATL and one continuous through lane (CTL). These models were developed from a calibration data set that covers eight ATL approaches in three U.S. states, for a total of 12 h of observation. The results suggest that the utility of the ATL is a function of each through-movement driver’s arrival time (during either the effective red or green phase), a...}, number={4}, journal={JOURNAL OF TRANSPORTATION ENGINEERING}, author={Bugg, Zachary and Rouphail, Nagui M. and Schroeder, Bastian}, year={2013}, month={Apr}, pages={371–378} }
 @article{al-ghandour_schroeder_rasdorf_williams_2012, title={Delay analysis of single-lane roundabout with a slip lane under varying exit types, experimental balanced traffic volumes, and pedestrians, using microsimulation}, number={2312}, journal={Transportation Research Record}, author={Al-Ghandour, M. and Schroeder, B. and Rasdorf, W. and Williams, B.}, year={2012}, pages={76–85} }
 @article{schroeder_rouphail_salamati_bugg_2012, title={Effect of pedestrian impedance on vehicular capacity at multilane roundabouts with consideration of crossing treatments}, number={2312}, journal={Transportation Research Record}, author={Schroeder, B. and Rouphail, N. M. and Salamati, K. and Bugg, Z.}, year={2012}, pages={14–24} }
 @article{bugg_rouphail_schroeder_2012, title={Guidance for simulation-based modeling of auxiliary through lanes}, number={2311}, journal={Transportation Research Record}, author={Bugg, Z. and Rouphail, N. M. and Schroeder, B.}, year={2012}, pages={51–58} }
 @article{salamati_schroeder_rouphail_cunningham_zhang_kaber_2012, title={Simulator study of driver responses to pedestrian treatments at multilane roundabouts}, number={2312}, journal={Transportation Research Record}, author={Salamati, K. and Schroeder, B. and Rouphail, N. M. and Cunningham, C. and Zhang, Y. and Kaber, D.}, year={2012}, pages={67–75} }
 @article{findley_cunningham_schroeder_vaughan_fowler_2012, title={Structural and safety investigation of statewide performance of weathered steel beam guardrail in North Carolina}, number={2309}, journal={Transportation Research Record}, author={Findley, D. J. and Cunningham, C. M. and Schroeder, B. J. and Vaughan, C. L. and Fowler, T. J.}, year={2012}, pages={63–72} }
 @article{al-ghandour_schroeder_williams_rasdorf_2011, title={Conflict models for single-lane roundabout slip lanes from microsimulation development and validation}, number={2236}, journal={Transportation Research Record}, author={Al-Ghandour, M. N. and Schroeder, B. J. and Williams, B. M. and Rasdorf, W. J.}, year={2011}, pages={92–101} }
 @article{salamati_schroeder_rouphail_cunningham_long_barlow_2011, title={Development and implementation of conflict-based assessment of pedestrian safety to evaluate accessibility of complex intersections}, number={2264}, journal={Transportation Research Record}, author={Salamati, K. and Schroeder, B. and Rouphail, N. M. and Cunningham, C. and Long, R. and Barlow, J.}, year={2011}, pages={148–155} }
 @article{schroeder_rouphail_2011, title={Event-Based Modeling of Driver Yielding Behavior at Unsignalized Crosswalks}, volume={137}, ISSN={["1943-5436"]}, DOI={10.1061/(asce)te.1943-5436.0000225}, abstractNote={This research explores factors associated with driver yielding behavior at unsignalized pedestrian crossings and develops predictive models for yielding using logistic regression. It considers the effect of variables describing driver attributes, pedestrian characteristics and concurrent conditions at the crosswalk on the yield response. Special consideration is given to 'vehicle dynamics constraints' that form a threshold for the potential to yield. Similarities are identified to driver reaction in response to the 'amber' indication at a signalized intersection. The logit models were developed from data collected at two unsignalized mid-block crosswalks in North Carolina. The data include 'before' and 'after' observations of two pedestrian safety treatments, an in-street pedestrian crossing sign and pedestrian-actuated in-roadway warning lights.The analysis suggests that drivers are more likely to yield to assertive pedestrians who walk briskly in their approach to the crosswalk. In turn, the yield probability is reduced with higher speeds, deceleration rates and if vehicles are traveling in platoons. The treatment effects proved to be significant and increased the propensity of drivers to yield, but their effectiveness may be dependent on whether the pedestrian activates the treatment.The results of this research provide new insights on the complex interaction of pedestrians and vehicles at unsignalized intersections and have implications for future work towards predictive models for driver yielding behavior. The developed logit models can provide the basis for representing driver yielding behavior in a microsimulation modeling environment.}, number={7}, journal={JOURNAL OF TRANSPORTATION ENGINEERING}, author={Schroeder, Bastian J. and Rouphail, Nagui M.}, year={2011}, month={Jul}, pages={455–465} }
 @article{cunningham_schroeder_vaughan_hughes_2011, title={Is ticketing aggressive cars and trucks effective in changing driver behavior? Evidence from North Carolina}, number={2265}, journal={Transportation Research Record}, author={Cunningham, C. M. and Schroeder, B. J. and Vaughan, C. and Hughes, R. G.}, year={2011}, pages={100–108} }
 @article{haley_ott_hummer_foyle_cunningham_schroeder_2011, title={Operational effects of signalized superstreets in North Carolina}, number={2223}, journal={Transportation Research Record}, author={Haley, R. L. and Ott, S. E. and Hummer, J. E. and Foyle, R. S. and Cunningham, C. M. and Schroeder, B. J.}, year={2011}, pages={72–79} }
 @article{schroeder_rouphail_2010, title={Estimating operational impacts of freeway work zones on extended facilities}, number={2169}, journal={Transportation Research Record}, author={Schroeder, B. J. and Rouphail, N. M.}, year={2010}, pages={70–80} }
 @article{schroeder_rouphail_2010, title={Mixed-priority pedestrian delay models at single-lane roundabouts}, number={2182}, journal={Transportation Research Record}, author={Schroeder, B. J. and Rouphail, N. M.}, year={2010}, pages={129–138} }
 @article{schroeder_rouphail_hughes_2009, title={Working concept of accessibility performance measures for usability of crosswalks by pedestrians with vision impairments}, number={2140}, journal={Transportation Research Record}, author={Schroeder, B. J. and Rouphail, N. M. and Hughes, R. G.}, year={2009}, pages={103–110} }
 @article{schroeder_rouphail_hughes_2008, title={Toward roundabout accessibility - Exploring the operational impact of pedestrian signalization options at modern roundabouts}, volume={134}, DOI={10.1061/(ASCE)0733-947X(2008)134:6(262)}, abstractNote={This paper explores the use of pedestrian signalization options for crosswalks at one- and two-lane roundabouts to enable these facilities to be accessible to pedestrians with vision impairments. Motivated by uncertainties about the safety of roundabouts for blind pedestrians, audible pedestrian signals hold promise for safely regulating the interaction of vehicles and pedestrians at these facilities. However, the use of pedestrian signals at roundabouts is controversial because of the potential for queue spillback into the circulating lane and delays to vehicular traffic. The objective of this work is to quantify pedestrian-induced delays and queuing impacts of a pedestrian signal placed at the busiest approach of a modern roundabout. The analysis is performed using a calibrated microsimulation model and includes assessment of innovative solutions for crossing geometry and phasing scheme at one-lane and two-lane roundabouts. The results suggest that the impact of pedestrian signals at roundabouts is greatest as vehicle volumes approach capacity, but that vehicle delay and queuing can be mitigated through innovative signal configurations. The findings are important in light of recent discourse concerning the accessibility of roundabouts to pedestrians with vision impairments that may ultimately move towards a requirement for signalization for certain facility types.}, number={6}, journal={Journal of Transportation Engineering}, author={Schroeder, B. J. and Rouphail, N. M. and Hughes, R. G.}, year={2008}, pages={262–271} }