Works (64)
Updated: April 4th, 2024 11:31
2023 article
Response time of mixed platoons with traditional and autonomous vehicles in field trials: impact assessment on flow stability and safety
Das, T., Ahmed, I., Williams, B. M., & Rouphail, N. M. (2023, December 29). TRANSPORTMETRICA A-TRANSPORT SCIENCE, Vol. 12.
author keywords: Response time; mixed traffic; traffic flow stability; rear-end crash risk; adaptive cruise control; manufacturer heterogeneity
Sources: Web Of Science, NC State University Libraries, ORCID
Added: January 16, 2024
2022 journal article
Investigating the relationship between freeway rear-end crash rates and macroscopically modeled reaction time
TRANSPORTMETRICA A-TRANSPORT SCIENCE, 18(3), 1001–1024.
author keywords: Required reaction time; car-following; discontinuous traffic flow model; rear-end crashes; traffic stream stability
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: May 10, 2021
2021 journal article
Impacts of Private Autonomous and Connected Vehicles on Transportation Network Demand in the Triangle Region, North Carolina
JOURNAL OF URBAN PLANNING AND DEVELOPMENT, 147(1).
Contributors: M. Hasnat n , E. Bardaka n , M. Samandar n, N. Rouphail n, G. List n & n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 1, 2021
2020 journal article
Crash Classification by Congestion Type for Highways
APPLIED SCIENCES-BASEL, 10(7).
author keywords: collision classification; recurrent and non-recurrent congestion; link speed data; traffic safety; advanced traffic management system
TL;DR:
An easily implementable methodology that can classify all reported crashes in terms of the operational conditions under which each crash occurred is presented, which makes use of a novel scheme for distinguishing between recurrent and non-recurrent congestion.
(via Semantic Scholar)
www.mdpi.com (publisher PDF)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 6, 2020
2020 journal article
Drone Delivery of an Automated External Defibrillator
New England Journal of Medicine, 383(12), 1186–1188.
Contributors: W. Rosamond, A. Johnson, B. Bogle, E. Arnold n , C. Cunningham *, M. Picinich, * , J. Zègre-Hemsey*
MeSH headings : Aircraft; Defibrillators; Humans; Manikins; Out-of-Hospital Cardiac Arrest; Patient Simulation; Time-to-Treatment
TL;DR:
Delivery of an AED by drone was compared with on-the-ground retrieval of a fixed-location AED for simulated out-of-hospital cardiac arrest in patients with life-threatening cardiac arrest.
(via Semantic Scholar)
Source: ORCID
Added: October 3, 2020
2018 journal article
Application of a Discontinuous Form of Macroscopic Gazis-Herman-Rothery Model to Steady-State Freeway Traffic Stream Observations
TRANSPORTATION RESEARCH RECORD, 2672(20), 51–62.
Contributors: I. Ahmed n , n & M. Samandar n
TL;DR:
Three constraints justified by the Highway Capacity Manual were applied to fit the model so that the fitted parameters have reasonable and physically interpretable values, and two statistical performance measures verify that the proposed model is preferable to the HCM models both in terms of fit alone and when considering the tradeoff between fit and model complexity.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 4, 2019
2018 journal article
Data-driven approach for identifying spatiotemporally recurrent bottlenecks
IET INTELLIGENT TRANSPORT SYSTEMS, 12(8), 756–764.
Contributors: T. Song *, n & N. Rouphail n
TL;DR:
A data-driven approach for identifying recurrent bottlenecks is introduced, using probe vehicle speed reports, and the characteristics determined the recurrent bottleneck locations with a historical time span of bottleneck activation are revealed and tested.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 16, 2018
2018 journal article
Real-Time Prediction of Seasonal Heteroscedasticity in Vehicular Traffic Flow Series
IEEE Transactions on Intelligent Transportation Systems, 19(10), 3170–3180.
Contributors: W. Huang *, W. Jia*, J. Guo *, n , G. Shi*, Y. Wei *, J. Cao*
TL;DR:
An online seasonal adjustment factors plus adaptive Kalman filter (OSAF+AKF) approach is proposed in this paper to predict in real time the seasonal heteroscedasticity in traffic flow series and showed improved adaptability when traffic is highly volatile.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, NC State University Libraries, ORCID
Added: October 19, 2018
2018 journal article
Reliability Assessment Tool: Development and Prototype Testing
TRANSPORTATION RESEARCH RECORD, 2672(14), 29–38.
Contributors: G. List n, N. Rouphail n, R. Smith n & n
TL;DR:
A monitoring system that was developed to assess travel time reliability for observed operating conditions by utilizing traffic stream and non-transportation related data is presented.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: May 28, 2019
2018 journal article
Validation and Calibration of Freeway Reliability Methodology in the Highway Capacity Manual: Method and Case Studies
TRANSPORTATION RESEARCH RECORD, 2672(15), 93–104.
Contributors: N. Karmakar n, S. Aghdashi n, N. Rouphail n & n
TL;DR:
Practical calibration and validation methods of the core and reliability analyses described in the Highway Capacity Manual are focused on to provide HCM users with guidance on collecting data for freeway reliability analysis as well as validating the reliability performance measures predictions of the HCM methodology.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: June 4, 2019
2018 journal article
Weigh Station Impact on Truck Travel Time Reliability: Results and Findings from a Field Study and a Simulation Experiment
TRANSPORTATION RESEARCH RECORD, 2672(9), 120–129.
Contributors: M. Samandar n, n & I. Ahmed n
TL;DR:
The model results indicate that WIM technology does increase travel time reliability and provides benefits to both trucking companies and enforcement agencies, and it was also found that increases in the proportion of WIM bypass result in increases in routeTravel time reliability.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: May 28, 2019
2017 article
Advances in travel time reliability monitoring and assessment
JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, Vol. 21, pp. 435–438.
Contributors: G. List n & n
TL;DR:
Reliability can be viewed from multiple perspectives, including that of an individual driver who makes a trip repeatedly from an origin to a destination and who desires consistency in the travel time experienced, and a shipper's perspective might be that of ensuring that packages arrive on-time more frequently than a targeted “acceptable” percentage of the time.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2017 book
Exploring Vehicle–Pedestrian Crash Severity Factors on the Basis of In-Car Black Box Recording Data
In Transportation Research Record (Vol. 2659, pp. 148–154).
TL;DR:
Video data recorded by an in-car black box provided direct crash observation, they were more reliable than the crash data, and video images and speed profiles retrieved from the black box were advantageous for safety studies, and new explanatory variables that affected injury severity were defined.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Source: ORCID
Added: March 31, 2023
2017 conference paper
Performance in takeover and characteristics of non-driving related tasks during highly automated driving in younger and older drivers
Proceedings of the Human Factors and Ergonomics Society, 2017-October, 37–41.
Contributors: H. Clark n, A. McLaughlin n, n & J. Feng n
TL;DR:
It is found that older drivers speed was negatively predicted by age while their response time to a notification was not predicted by any factor, and younger drivers showed a trend of positive relationship between age and average speed and the characteristics of the last task engagement.
(via Semantic Scholar)
Source: ORCID
Added: March 31, 2023
2016 journal article
Dynamic Bandwidth Analysis for Coordinated Arterial Streets
JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, 20(3), 294–310.
Contributors: S. Kim n, A. Hajbabaie* , n & N. Rouphail n
TL;DR:
Detailed analysis at three arterial sites revealed that coordinated green phase time distributions are complex and multimodal and cannot be represented by a single-valued statistic, and dynamic bandwidth analysis confirmed that programmed green bandwidth consistently underestimates the size of the actual dynamic bandwidth.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2015 book
Dynamic traffic flow model for travel time estimation
In Transportation Research Record (Vol. 2526, pp. 70–78).
Contributors: T. Yi * & n
TL;DR:
A comparison of the estimated results and measurement errors shows the accuracy of the modified dynamic model for estimating the travel times of freeway links under transition and congestion traffic conditions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: March 31, 2023
2015 journal article
Dynamic traffic flow model for travel time estimation
Transportation Research Record, (2526), 70–78.
Source: NC State University Libraries
Added: August 6, 2018
2015 journal article
Real time traffic flow outlier detection using short-term traffic conditional variance prediction
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES, 50, 160–172.
Contributors: J. Guo *, W. Huang * & n
author keywords: Outlier detection; Intervention analysis; Traffic flow series; Short term traffic forecasting; SARIMA plus GARCH; Kalman filter
TL;DR:
It was found that outliers can be detected using the proposed detection strategy and it was shown that the information contained in the outliers should be assimilated into the forecasting system to enhance its ability of adapting to the changing patterns of the traffic flow series.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
Adaptive Kalman filter approach for stochastic short-term traffic flow rate prediction and uncertainty quantification
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES, 43, 50–64.
Contributors: J. Guo *, W. Huang * & n
author keywords: Congestion; Intelligent transportation system; Short term traffic flow forecasting; SARIMA; GARCH; Adaptive Kalman filter
TL;DR:
Empirical comparisons using real world traffic flow data aggregated at 15-min interval showed that the adaptive Kalman filter approach can generate workable level forecasts and prediction intervals and demonstrates improved adaptability when traffic is highly volatile.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
Erratum for “Modeling Seasonal Heteroscedasticity in Vehicular Traffic Condition Series Using a Seasonal Adjustment Approach” by Guogang Shi, Jianhua Guo, Wei Huang, and Billy M. Williams
Journal of Transportation Engineering, 140(9), 08014002.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Crossref, NC State University Libraries
Added: December 21, 2020
2014 journal article
Modeling Seasonal Heteroscedasticity in Vehicular Traffic Condition Series Using a Seasonal Adjustment Approach
Journal of Transportation Engineering, 140(5), 04014012.
Contributors: G. Shi*, J. Guo *, W. Huang * & n
author keywords: Seasonal effect; Heteroscedasticity modeling; Short-term traffic condition forecasting; Generalized autoregressive conditional heteroscedasticity (GARCH); Time series analysis; Seasonal autoregressive integrated moving average (SARIMA)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Crossref, NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2014 article
Modeling seasonal heteroscedasticity in vehicular traffic condition series using a seasonal adjustment approach (vol 140, 04014012, 2014)
Journal of Transportation Engineering, Vol. 140.
Source: NC State University Libraries
Added: August 6, 2018
2013 book
Development of an oversaturated speed-flow model based on the highway capacity manual
In Transportation Research Record (pp. 41–48).
Contributors: Y. Xu, n , N. Rouphail n & R. Chase
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Source: ORCID
Added: March 31, 2023
2013 journal article
Development of an oversaturated speed-flow model based on the highway capacity manual
Transportation Research Record, (2395), 41–48.
Source: NC State University Libraries
Added: August 6, 2018
2013 journal article
Synthesizing Route Travel Time Distributions from Segment Travel Time Distributions
TRANSPORTATION RESEARCH RECORD, (2396), 71–81.
Contributors: I. Isukapati n, G. List n, n & A. Karr *
TL;DR:
The Kolmogorov–Smirnov tests show that travel times synthesized from the segment-specific data are statistically different only under highly congested conditions, and even then, the percentage differences in the distributions of the synthesized and actual travel times are small.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2012 journal article
Comparative Evaluation of Reported Speeds from Corresponding Fixed-Point and Probe-Based Detection Systems
TRANSPORTATION RESEARCH RECORD, (2308), 110–119.
Contributors: R. Chase n, n , N. Rouphail n & S. Kim n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2012 book
Delay analysis of single-lane roundabout with a slip lane under varying exit types, experimental balanced traffic volumes, and pedestrians, using microsimulation
In Transportation Research Record (pp. 76–85).
Contributors: M. Al-Ghandour, B. Schroeder n, W. Rasdorf n & n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Source: ORCID
Added: March 31, 2023
2012 journal article
Delay analysis of single-lane roundabout with a slip lane under varying exit types, experimental balanced traffic volumes, and pedestrians, using microsimulation
Transportation Research Record, (2312), 76–85.
Source: NC State University Libraries
Added: August 6, 2018
2012 journal article
Development and evaluation of a constrained optimization model for traffic signal plan transition
Transportation Research Part C: Emerging Technologies, 20(1), 185–198.
Contributors: J. Lee * & n
author keywords: Traffic control; Signal plan transition; Control optimization; Genetic algorithms
TL;DR:
A non-linear mathematical model is presented that provides constrained delay minimization through incremental and simultaneous adjustments in offset and cycle length during plan transitions that showed measurable improvement in delay performance under a broad range of traffic and geometric conditions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Crossref, ORCID, NC State University Libraries
Added: December 21, 2020
2012 journal article
Integrated Heteroscedasticity Test for Vehicular Traffic Condition Series
JOURNAL OF TRANSPORTATION ENGINEERING, 138(9), 1161–1170.
Contributors: J. Guo *, W. Huang * & n
author keywords: Heteroscedasticity; Short-term forecasting; Vehicular traffic series; Transformation; Stochastic time series modeling; GARCH; SARIMA
TL;DR:
An integrated heteroscedasticity test, including an optimal transformation search and four statistical tests, is proposed in this study, which aims to lay the theoretical basis for traffic uncertainty-related studies.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2012 book
Temporal stability of freeway macroscopic traffic stream models
In Transportation Research Record (pp. 131–140).
Contributors: C. Liu*, n & N. Rouphail n
TL;DR:
A method to investigate the issue of temporal stability of freeway macroscopic traffic stream models rigorously with 15 years of traffic data from the London Orbital Motorway is presented and implemented and parameters were found to be relatively stable over time and did not exhibit statistically significant seasonal correlation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Source: ORCID
Added: March 31, 2023
2012 journal article
Temporal stability of freeway macroscopic traffic stream models
Transportation Research Record, (2315), 131–140.
Source: NC State University Libraries
Added: August 6, 2018
2012 journal article
‘Real-time road traffic forecasting using regime-switching space-time models and adaptive lasso’ by Y. Kamarianakis, W. Shen, and L. Wynter
Applied Stochastic Models in Business and Industry, 28(4), 319–321.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Crossref, ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2011 conference paper
Analysis of Single-Lane Roundabout Slip Lanes Using SIDRA
In I. L. Al-Qadi & S. Murrell (Eds.), T & DI Congress 2011 : integrated transportation and development for a better tomorrow : proceedings of the First Transportation and Development Institute Congress : March 13-16, 2011, Chicago, Illinois (pp. 1235–1244).
Contributors: M. Al-Ghandour, W. Rasdorf n, n & B. Schroeder n
Ed(s): I. Al-Qadi & S. Murrell
Event: First Transportation and Development Institute Congress at Chicago, IL on March 13-16, 2011
Sources: Crossref, NC State University Libraries, ORCID
Added: February 24, 2020
2011 journal article
Analyzing Operational Improvements as an Alternative to Traditional Highway Construction
Transportation Research Record, (2223), 18–25.
Contributors: W. Kittelson, N. Rouphail n, n & X. Zhou *
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
Conflict Models for Single-Lane Roundabout Slip Lanes from Microsimulation Development and Validation
Transportation Research Record, (2236), 92–101.
Contributors: M. Al-Ghandour, B. Schroeder n, n & W. Rasdorf n
TL;DR:
Five zone-based conflict prediction models were developed and confirmed that conflicts in the merge area were more frequent than in the roundabout approach area and that the installation of a free-flow slip lane exit type reduced overall conflict occurrence.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2011 article
Development and evaluation of a constrained optimization model for traffic signal plan transition
PAPERS SELECTED FOR THE 19TH INTERNATIONAL SYMPOSIUM ON TRANSPORTATION AND TRAFFIC THEORY, Vol. 17, pp. 490–508.
Contributors: J. Lee * & n
author keywords: traffic control; signal plan transition; control optimization; genetic algorithms
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2011 journal article
Fundamental Insight into Signal Plan Transition Methods
JOURNAL OF TRANSPORTATION ENGINEERING-ASCE, 137(10), 676–686.
author keywords: Traffic signals; Simulation; Evaluation; Traffic analysis
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
Incorporating Stochastic Road Capacity into Day-to-Day Traffic Simulation and Traveler Learning Framework Model Development and Case Study
Transportation Research Record, (2254), 112–121.
Contributors: A. Jia n, X. Zhou *, M. Li *, N. Rouphail n & n
TL;DR:
A method to seamlessly incorporate stochastic capacity models at freeway bottlenecks and signalized intersections is presented and adaptive day-to-day traveler learning and route choice behavioral models under the travel time variability introduced by random capacity variations are developed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2010 journal article
Identification and Calibration of Site-Specific Stochastic Freeway Breakdown and Queue Discharge
Transportation Research Record, (2188), 148–155.
Contributors: A. Jia*, n & N. Rouphail*
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2010 journal article
Real-Time Short-Term Traffic Speed Level Forecasting and Uncertainty Quantification Using Layered Kalman Filters
Transportation Research Record, (2175), 28–37.
Contributors: J. Guo * & n
TL;DR:
Results based on real-world station-by-station traffic speed data showed that the proposed online algorithm can generate workable short-term traffic speed level forecasts and associated prediction confidence intervals.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Improved flow-based travel time estimation method from point detector data for freeways
Journal of Transportation Engineering, 135(1), 26–36.
TL;DR:
The present study proposes several modifications to an existing traffic flow theory based model for travel time based on inductance loop detectors, which are one of the most widely used inputs to travel time estimation techniques.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Modeling the Role of Transportation Information in Mitigating Major Capacity Reductions in a Regional Network
Transportation Research Record, (2138), 75–84.
Contributors: H. Hu n, n , N. Rouphail n, A. Khattak * & X. Zhou *
TL;DR:
The case study demonstrated that the DYNASMART-P DTA tool is capable of providing reasonable evaluation results, including realistic estimates of the effectiveness of ATISs in mitigating the congestion caused by work zone activities.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Traveler Information Delivery Mechanisms Impact on Consumer Behavior
Transportation Research Record, (2069), 77–84.
Contributors: A. Khattak *, X. Pan *, n , N. Rouphail n & Y. Fan *
TL;DR:
This study answers two fundamental questions: whether accessing more information sources is associated with a higher likelihood of travel decision adjustments and which technologies are more likely to elicit substantive adjustments to routine travel.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Adaptive seasonal time series models for forecasting short-term traffic flow
Transportation Research Record, (2024), 116–125.
TL;DR:
Results show that forecasts obtained from recursive adaptive filtering methods are comparable with those from maximum likelihood estimated models, and the adaptive methods deliver this performance at a significantly lower computational cost.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Data collection time intervals for stochastic short-term traffic flow forecasting
Transportation Research Record, (2024), 18–26.
Contributors: J. Guo *, n & B. Smith*
TL;DR:
This work serves as an important step toward establishing a short-term traffic condition forecasting framework that identifies appropriate forecasting approaches for candidate data collection time intervals based on the functional requirements of specific applications.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Simulation and analysis of freeway lane reversal for coastal hurricane evacuation
Journal of Urban Planning and Development, 133(1), 61–72.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Trraffic management center use of incident detection algorithms: Findings of a nationwide survey
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, 8(2), 351–358.
Contributors: n & A. Guin *
author keywords: decision support systems; detectors; intelligent systems; transportation
TL;DR:
Analysis of the survey results provides an understanding of the reasons behind the limited implementation of AID algorithms and allows a direct comparison between the conventional incident detection methods and the AID technology on the basis of measured and/or perceived performance.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Comprehensive Evaluation of Guardrail Delineation Systems
Public Works Management &Amp; Policy, 11(1), 49–62.
Contributors: n , A. Amekudzi*, D. Folds*, A. Zureick * & Y. Kim*
Source: ORCID
Added: March 31, 2023
2006 journal article
Reasonable Speed Limits on Suburban Multilane Highways with Curbs
Transportation Research Record, (1969), 10–17.
Contributors: J. Baek, J. Hummer, * & C. Cunningham n
Source: ORCID
Added: March 31, 2023
2006 chapter
Reasonable speed limits on suburban multilane highways with curbs
In Highway safety: law enforcement; alcohol; driver training; safety planning and management; commercial vehicles; and motorcycles (pp. 10–17). Washington: Transportation Research Board Natl Research Council.
Source: NC State University Libraries
Added: August 6, 2018
2006 chapter
Reasonable speed limits on suburban multilane highways with curbs
In Highway Safety: Law Enforcement; Alcohol; Driver Training; Safety Planning and Management; Commercial Vehicles; and Motorcycles (pp. 10–17). http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000243925000002&KeyUID=WOS:000243925000002
Source: ORCID
Added: March 31, 2023
2006 journal article
The network kinematic waves model: A simplified approach to network traffic
JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, 10(1), 1–14.
author keywords: macroscopic model; kinematic waves; freeway networks; traffic simulation; ITS
TL;DR:
The original KWaves theory is reformulated and extended to address network traffic, and the N-KWaves model is proposed, which is best suited for modeling traffic operation in a regional freeway network and has a strong connection to Intelligent Transportation Systems.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Systematic Approach for Validating Traffic Simulation Models
Transportation Research Record, 1876(1876), 20–31.
TL;DR:
To achieve a higher level of confidence about model performance, a simultaneous statistical inference technique is proposed that tests both model accuracy and precision.
(via Semantic Scholar)
Source: ORCID
Added: March 31, 2023
2004 chapter
Systematic approach for validating traffic simulation models
In Calibration and validation of simulation models 2004 (pp. 20–31). Washington, DC: Transportation Research Board.
Source: NC State University Libraries
Added: August 6, 2018
2004 chapter
Systematic approach for validating traffic simulation models
In Calibration and Validation of Simulation Models 2004 (pp. 20–31). http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000227334900003&KeyUID=WOS:000227334900003
Source: ORCID
Added: March 31, 2023
2003 journal article
Determining traffic stream impacts of radar detectors using microscopic simulation
Journal of Transportation Engineering, 129(1), 7–15.
TL;DR:
The case study shows that the efficacy of using radar as a speed reduction strategy is a function of congestion and radar detector density, with the strategy being most effective for volumes levels between 200 and 1,400 vehicles per hour per lane.
(via Semantic Scholar)
Source: ORCID
Added: March 31, 2023
2003 journal article
Modeling and forecasting vehicular traffic flow as a seasonal ARIMA process: Theoretical basis and empirical results
Journal of Transportation Engineering, 129(6), 664–672.
TL;DR:
The theoretical basis for modeling univariate traffic condition data streams as seasonal autoregressive integrated moving average processes as well as empirical results using actual intelligent transportation system data are presented and found to be consistent with the theoretical hypothesis.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2002 journal article
Comparison of parametric and nonparametric models for traffic flow forecasting
Transportation Research Part C: Emerging Technologies, 10(4), 303–321.
TL;DR:
This research effort seeks to examine the theoretical foundation of nonparametric regression and to answer the question of whether non parametric regression based on heuristically improved forecast generation methods approach the single interval traffic flow prediction performance of seasonal ARIMA models.
(via Semantic Scholar)
Source: ORCID
Added: March 31, 2023
2001 journal article
Multivariate Vehicular Traffic Flow Prediction: Evaluation of ARIMAX Modeling
Transportation Research Record, 1776(1776), 194–200.
TL;DR:
The results indicate that ARIMAX models provide improved forecast performance over univariate forecast models, but further research is needed to investigate model extensions and refinements to provide a generalizable, self-tuning multivariate forecasting model that is easily implemented and that effectively models varying upstream to downstream correlations.
(via Semantic Scholar)
Source: ORCID
Added: March 31, 2023
2001 chapter
Multivariate vehicular traffic flow prediction - Evaluation of ARIMAX modeling
In Traffic Flow Theory and Highway Capacity 2001 (pp. 194–200). http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000176595900025&KeyUID=WOS:000176595900025
Source: ORCID
Added: March 31, 2023
1998 journal article
Freight planning requirements for interstate corridors
Transportation Quarterly, 52(2), 39–48. http://www.scopus.com/inward/record.url?eid=2-s2.0-0032021740&partnerID=MN8TOARS
Source: ORCID
Added: March 31, 2023
1998 journal article
Urban Freeway Traffic Flow Prediction: Application of Seasonal Autoregressive Integrated Moving Average and Exponential Smoothing Models
Transportation Research Record, 1644(1644), 132–141.
Contributors: * , P. Durvasula* & D. Brown *
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: March 31, 2023
1998 chapter
Urban freeway traffic flow prediction - Application of seasonal autoregressive integrated moving average and exponential smoothing models
In Traffic Flow Theory (pp. 132–141). http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000082030300014&KeyUID=WOS:000082030300014
Source: ORCID
Added: March 31, 2023
Employment
Updated: May 8th, 2019 17:05
2018 - present
North Carolina State University Raleigh, NC, US
Director
Institute for Transportation Research and Education
2015 - present
North Carolina State University Raleigh, NC, US
Professor
Civil, Construction, and Environmental Engineering
2008 - 2015
North Carolina State University Raleigh, NC, US
Associate Professor
Civil, Construction, and Environmental Engineering
2002 - 2008
North Carolina State University Raleigh, NC, US
Assistant Professor
Civil, Construction, and Environmental Engineering
1999 - 2002
Georgia Institute of Technology Atlanta, GA, US
Assistant Professor
School of Civil and Environmental Engineering
1988 - 1999
University of Virginia Charlottesville, VA, US
Post-doctoral Research Associate
Civil and Environmental Engineering
1990 - 1995
Kimley-Horn and Associates, Inc. Raleigh, NC, US
Consulting Engineer
Transportation Planning and Traffic Operations
1987 - 1988
United States Navy - Civil Engineer Corps Washington, DC, US
Assistant Staff Civil Engineer/Lieutenant Jr. Grade(O-2) and Lieutenant (O-3)
Field Support Activity
1984 - 1986
United States Navy - Civil Engineer Corps Long Beach, CA, US
Assistant Resident Officer in Charge of Construction/Ensign(O-1) and Lieutenant Jr. Grade (O-2)
Resident Officer in Charge of Construction
Education
Updated: May 8th, 2019 17:01
1995 - 1999
University of Virginia Charlottesville, VA, US
PhD Transportation
Civil and Environmental Engineering
1988 - 1990
North Carolina State University Raleigh, NC, US
MCE Transportation
Civil, Construction, and Environmental Engineering
1980 - 1984
North Carolina State University Raleigh, NC, US
BS Civil Engineering
Civil, Construction, and Environmental Engineering
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