Works (53)
Updated: November 20th, 2024 14:25
2024 journal article
Effects of Probabilistic Priority on Delay at Permissive Left-Turn Signalized Intersections
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, 25(5), 3402–3419.
author keywords: Permissive left-turn phase; delay; probabilistic priority; queuing theory; stochastic simulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: May 15, 2024
2023 journal article
Arterial Signal Coordination Considering the Impacts of Left-Turn Waiting Areas
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS, 149(10).
author keywords: Signalized intersection; Left-turn waiting area (LTWA); Arterial signal coordination; MAXBAND; Traffic simulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 5, 2023
2023 journal article
Profit-Sharing Contract of the Fresh Agricultural Products Supply Chain under Community Group Purchase Mode Considering Freshness Preservation Efforts
SUSTAINABILITY, 15(9).
author keywords: fresh agricultural product; freshness preservation efforts; community group purchase; supply chain; profit-sharing contract
open access via doi.org (publisher)
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: May 10, 2023
2023 article
Quadrant Roadway Intersections: Tradeoffs between Control Delay Savings and Extra Travel Time
Yang, G., Cunningham, C. M., & Brown, M. R. (2023, September 20). TRANSPORTATION RESEARCH RECORD, Vol. 9.
author keywords: quadrant roadway intersection; direct left-turn; loop left-turn; time-in-system; capacity utilization; microsimulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 2, 2023
2022 journal article
Analytical and Microsimulation Model Calibration and Validation: Application to Roundabouts under Sight-Restricted Conditions
Transportation Research Record: Journal of the Transportation Research Board, 2677(3), 274–288.
author keywords: operations; calibration; validation; macroscopic traffic simulation; microscopic traffic simulation
TL;DR:
The calibration and validation efforts associated with an analytical platform, SIDRA 9, and a microsimulation model, TransModeler 5, conducted under sight-restricted conditions are explored, confirming the value of model calibration in more accurately describing field performance.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
1. No Poverty
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: August 29, 2022
2022 article
Capacity Estimation at All-Way Stop-Controlled Intersections Considering Pedestrian Crossing Effects
Yue, R., Yang, G., Zheng, Y., & Tian, Z. (2022, August 22). TRANSPORTATION RESEARCH RECORD, Vol. 8.
author keywords: operations; capacity; Highway Capacity Manual (HCM); intersections
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 6, 2022
2022 journal article
Capitalizing on Drone Videos to Calibrate Simulation Models for Signalized Intersections and Roundabouts
Transportation Research Record: Journal of the Transportation Research Board, 2676(12), 96–111.
author keywords: macroscopic traffic simulation; microscopic traffic simulation; traffic operations; unmanned aerial systems
TL;DR:
This paper illustrates how modeling teams can use drone data to calibrate model parameters pertaining to intersection operation and shows how saturation flow rates can be adjusted for signalized intersections so that queue dynamics and delays can be matched.
(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, Crossref
Added: July 5, 2022
2022 journal article
Effects of Implementing Night Operation Signal Coordination on Arterials
JOURNAL OF ADVANCED TRANSPORTATION, 2022.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 23, 2023
2022 journal article
Profit-Sharing Contracts for Fresh Agricultural Products Supply Chain Considering Spatio-Temporal Costs
SUSTAINABILITY, 14(4).
author keywords: supply chain; fresh agricultural products; freshness-keeping effort; logistics spatio-temporal costs; profit-sharing contract
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 28, 2022
2022 journal article
The potential of signalized offset T-intersections to accommodate new developments
INTERNATIONAL JOURNAL OF TRANSPORTATION SCIENCE AND TECHNOLOGY, 12(1), 217–229.
author keywords: Offset T-intersection; Intersection spacing; Traffic operations; Microsimulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023
2022 journal article
Traffic Queue Length Estimation at Permissive Left-Turn Signalized Intersections with Probabilistic Priority
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS, 148(12).
author keywords: Permissive left-turn; Probabilistic priority; Yielding behavior; Queuing theory; Stochastic simulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: October 31, 2022
2022 journal article
Waiting Time Estimation at Ferry Terminals Based on License Plate Recognition
Journal of Transportation Engineering, Part A: Systems, 148(9).
author keywords: Ferry terminal; Waiting time; Queue; License plate recognition (LPR); Tourism demand
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
14. Life Below Water
(OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: July 13, 2022
2021 article
Effects of Pedestrian Crossing on Minor Road Capacity at Two-Way Stop-Controlled Intersections
Yue, R., Yang, G., Zheng, Y., & Tian, Z. (2021, April 3). TRANSPORTATION RESEARCH RECORD, Vol. 4.
TL;DR:
An analytical model is proposed to quantify the increased capacity of minor street movements contributed by minor street pedestrian crossings and validates the model using both field data collected at a three-leg TWSC intersection and through the stochastic simulation method.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 23, 2021
2021 article
Evaluating connected vehicle-based weather responsive management strategies using weather-sensitive microscopic simulation
Jiang, Q., Nian, D., Guo, Y., Ahmed, M., Yang, G., & Ma, J. (2021, October 6). JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, Vol. 10.
author keywords: Analysis; connected vehicles (CV); early lane change; forward collision warning; modeling; and simulation (AMS); variable speed limit; weather responsive management strategies (WRMS)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: November 8, 2021
2020 journal article
An Integrated Microsimulation Modeling Approach for Safety Performance Assessment of the Wyoming Connected Vehicle Pilot Deployment Program
Accident Analysis and Prevention.
Source: ORCID
Added: December 18, 2020
2020 journal article
Analysis, Modeling and Simulation Framework for Performance Evaluation of the Wyoming Connected Vehicle Pilot Deployment Program
Advances in Transportation Studies.
Source: ORCID
Added: December 18, 2020
2020 journal article
Assessment of Drivers’ Perceptions of Connected Vehicle Human-Machine Interface for Driving under Adverse Weather Conditions: Preliminary Findings from Wyoming
Frontiers in Psychology.
Source: ORCID
Added: December 18, 2020
2020 journal article
Capacity Modeling of Permitted Left-Turn Signalized Intersections with Probabilistic Priority
TRANSPORTATION RESEARCH RECORD, 2674(10), 310–323.
TL;DR:
This research developed an analytical capacity model that took into account the probabilistic priority phenomenon at permitted left-turn signals and found that modeling results from the analytical model precisely matched the stochastic simulation results.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 24, 2020
2020 journal article
Connected Vehicle Real-time Traveler Information Messages for Freeway Speed Harmonization under Adverse Weather Conditions
Accident Analysis and Prevention.
Source: ORCID
Added: December 18, 2020
2020 journal article
Connected Vehicle Training Framework and Lessons Learned to Improve Safety of Highway Patrol Troopers
Transportation Research Record.
Source: ORCID
Added: December 18, 2020
2020 journal article
Crash Risk Assessment for Heterogeneity Traffic and Different Vehicle-Following Patterns Using Microscopic Traffic Flow Data
Sustainability.
author keywords: heterogeneity traffic; vehicle-following pattern; speed variation; crash risk assessment; minimum safe headway
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: December 17, 2020
2020 journal article
Distraction of Connected Vehicle Human-Machine Interface for Truck Drivers
Transportation Research Record.
Source: ORCID
Added: December 18, 2020
2020 journal article
Modeling the Modal Shift Effects of Converting A General Traffic Lane to A Dedicated Bus Lane
Promet – Traffic and Transportation.
Source: ORCID
Added: December 18, 2020
2020 journal article
Traffic Signal Retiming to Improve Corridor Performance
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS, 147(1).
author keywords: Signalized corridor; Traffic signal retiming; Signal performance index; Speed; Number of stops
TL;DR:
This research presents a new approach to signal retiming that addresses the challenge of periodically updating existing signal coordination plans of signalized corridors with real-time information about traffic flow in busy areas.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 17, 2020
2020 journal article
Uncovering impact factors of carbon emissions from transportation sector: evidence from China’s Yangtze River Delta Area
Mitigation and Adaptation Strategies for Global Change.
Source: ORCID
Added: December 18, 2020
2019 journal article
A Preliminary Investigation into the Impact of Connected Vehicle Human-Machine Interface on Driving Behavior
IFAC-PapersOnLine, 51(34), 227–229.
Contributors: M. Ahmed *, S. Gaweesh * & *
author keywords: Connected vehicle; Human-machine interface; Driving simulator; Driving behavior; Questionnaire survey
TL;DR:
A driving simulator testbed is developed, which includes three simulation scenarios that can represent different real-world driving conditions, to investigate the impact of Connected Vehicle (CV) Human-Machine Interface (HMI) on driving behavior.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
An Integrated Empirical Analysis of the Effect of Variable Message Sign on Driver Route Choice Behavior
Journal of Transportation Engineering, Part A: System.
Source: ORCID
Added: December 18, 2020
2019 journal article
An exploratory investigation of the impact of ramp metering on driver acceleration behavior
IATSS Research.
author keywords: Ramp metering; Acceleration behavior; Piecewise-constant acceleration model; Speed profile; Statistic test
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2019 journal article
Capacity of Urban Arterial Weaving Sections under Lane Signal Control Strategy
Transportation Research Record: Journal of the Transportation Research Board.
TL;DR:
A novel lane signal control method to regulate the weaving traffic flow at urban arterial weaving sections is proposed and capacity reduction is used as index to test the robust of entrance lane, facing the increasing demand for traffic.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2019 journal article
Determination of Bus Crowding Coefficient Based on Passenger Flow Forecasting
Journal of Advanced Transportation.
TL;DR:
The RBF Neural Networks approach to predict the number of passengers in the bus based on historical data and a cloud model-based bus crowd coefficient identification method was proposed, which can not only effectively determine the congestion coefficient, but also effectively avoid the fuzziness and randomness of the crowding coefficient judgment in the buses.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
10. Reduced Inequalities
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2019 book
Development and Assessment of a Connected Vehicle Training Program for Truck Drivers
In Transportation Research Record.
Contributors: M. Ahmed *, * & S. Gaweesh *
TL;DR:
Based on the feedback of 18 professional snowplow truck drivers from the Wyoming Department of Transportation, it was found that the proposed CV training program provided truck drivers with up-to-date knowledge and experience on CV technology.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
Discussion of “Queue Storage Design for Metered On-Ramps” by Zhongren Wang
International Journal of Transportation Science and Technology.
TL;DR:
Preliminary insights into the development of metered on-ramp queue storage length design guidelines considering the impacts of ramp geometric features and signal timing schemes of the upstream intersection are presented.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
Feasibility of using a single traffic signal controller to accommodate adjacent intersections
International Journal of Transportation Science and Technology.
TL;DR:
It was concluded that the Level-of-Service (LOS), delay, and the average number of stops under one-controller strategy maintained a similar condition in comparison with the previous two- Controller strategy, indicating that the proposed one- controller strategy would be a feasible alternative to reduce the operation costs of adjacent intersections.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2019 journal article
Geometric design of metered on-ramps: state-of-the-practice and remaining challenges
Transportation Letters.
author keywords: Metered on-ramp; queue storage length; traffic flow arrival profile; acceleration length; acceleration characteristics; ramp metering warrants
TL;DR:
Considering the potential impact of ramp-metering on drivers’ acceleration behavior, it is necessary to develop dedicated acceleration lane length design standards for metered on-ramps based on field collected acceleration performance data.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
Impact of Variable Speed Limit in a Connected Vehicle Environment on Truck Driver Behavior under Adverse Weather Conditions: Driving Simulator Study
Transportation Research Record.
TL;DR:
A driving simulator testbed was developed to assess the impact of the Wyoming’s CV-based VSL (CV-VSL) application on truck drivers’ behavior under adverse weather conditions, which showed that when the advisory speed limits were lower than 55 mph, participants generally followed the VSLs displayed on the CV human–machine interface (HMI).
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
Microsimulation Analysis of Traffic Operations at Two Diamond Interchange Types
Journal of Advanced Transportation.
TL;DR:
The findings from this study can aid the decision-makers choosing an appropriate interchange type for achieving the best benefit-cost ratio, and the proposed analytical model can be used for reliable capacity and delay estimation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2019 journal article
Performance evaluation framework of Wyoming connected vehicle pilot deployment program: summary of Phase 2 pre-deployment efforts and lessons learned
Journal of Intelligent and Connected Vehicles.
TL;DR:
Some early insights are raised into how CV technology might achieve the goal of improving safety and mobility and has the potential to guide similar research activities conducted by other agencies.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2019 journal article
Virtual Controller Interface Device for Hardware-in-the-Loop Simulation of Traffic Signals
IEEE Intelligent Transportation Systems Magazine.
Source: ORCID
Added: December 17, 2020
2018 journal article
Evaluation of Virtual Controller Interface Device and Software-in-the-Loop Simulation
Proceedings of the Institution of Civil Engineers - Transport.
author keywords: communications & control systems; design methods & aids; traffic engineering
TL;DR:
In current practice, hardware-in-the-loop simulation and software-in theloop simulation are two typical methods for traffic signal control research.
(via Semantic Scholar)
Source: ORCID
Added: December 18, 2020
2018 journal article
Impact of On-Ramp Traffic Flow Arrival Profile on Queue Length at Metered On-Ramps
Journal of Transportation Engineering, Part A: Systems, 145(2), 04018087.
author keywords: Ramp metering; Traffic flow arrive profile; Queue length modeling; Microsimulation
TL;DR:
This data shows that at a metered on-ramp, a vehicle queue will be formed in front of the ramp meter when on-Ramp demand exceeds the ramp-metering capacity, and it is therefore important to provide adequate queue capacity.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2018 journal article
Modeling the Impacts of Traffic Flow Arrival Profiles on Ramp Metering Queues
Transportation Research Record: Journal of the Transportation Research Board, 6, 036119811878225.
TL;DR:
It is revealed that ramp queue length tends to increase linearly with upstream signal cycle length, and the design of queue storage length for a metered on-ramp hence needs to fully consider the various ramp configurations and upstream signal timing settings.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2018 journal article
Queue length estimation for a metered on-ramp using mesoscopic simulation
Transportation Letters, 5, 1–10.
author keywords: Ramp metering; queue length modeling; mesoscopic simulation; demand-to-capacity ratio; queue storage length
TL;DR:
A mesoscopic simulation model for queue length estimation under various demand-to-capacity scenarios showed that the queue length modeling method could properly capture the realistic queue profile, and the estimated queue lengths were close to the field observations.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2017 journal article
Comparison of performance between Virtual Controller Interface Device and Controller Interface Device
IET Intelligent Transport Systems, 12(1), 22–30.
author keywords: traffic engineering computing; control engineering computing; user interfaces; telecontrol; intelligent transportation systems; virtual controller interface device; virtual CID; VCID; traffic signal controllers; microsimulation software; National Transportation Communications; ITS Protocol; NTCIP; traffic networks; queue length; travel time; simulation stability; remote control; physical signal control laboratory
TL;DR:
A Virtual CID (VCID) is proposed and results show that VCID could provide accurate and reliable simulation results, and has more advantages as it does not depend on any hardware device and is easy to operate.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2017 journal article
Feasibility of Using a Constant Acceleration Rate for Freeway Entrance Ramp Acceleration Lane Length Design
Journal of Transportation Engineering, Part A: Systems, 144(3), 06017001.
author keywords: Acceleration length; Speed profile; Constant acceleration; Statistical test
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2017 journal article
Impacts of traffic flow arrival pattern on the necessary queue storage space at metered on-ramps
Transportmetrica A: Transport Science, 14(7), 543–561.
author keywords: Ramp metering; queue length modeling; platoon arrival; random arrival; mesoscopic simulation; queue storage design
TL;DR:
Simulation results indicated that the traffic flow arrival pattern has significant impacts on Ramp queue length; vehicle platoons released from the upstream signalized intersection tend to exacerbate ramp queue length.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2016 journal article
Queue length estimation at metered freeway-to-freeway connectors
Journal of Advanced Transportation, 50(8), 1912–1924.
author keywords: ramp metering; freeway-to-freeway connector; input-output method; mesoscopic simulation; queue storage length
Source: ORCID
Added: December 17, 2020
2016 journal article
Recommendations for Acceleration Lane Length for Metered On-Ramps
Transportation Research Record: Journal of the Transportation Research Board, 2588, 1–11.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2016 journal article
Truck acceleration behavior study and acceleration lane length recommendations for metered on-ramps
International Journal of Transportation Science and Technology, 5(2), 93–102.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2015 journal article
Acceleration Characteristics at Metered On-Ramps
Transportation Research Record: Journal of the Transportation Research Board, 2484(1), 1–9.
Source: ORCID
Added: December 17, 2020
2015 journal article
Vehicle Speed and Acceleration Profile Study for Metered On-Ramps in California
Journal of Transportation Engineering, 142(2), 04015046.
author keywords: Ramp metering; Speed measurement; Acceleration characteristics; Speed profile; Acceleration length
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 17, 2020
2013 journal article
Feasibility of Unconditional Transit Signal Priority Considering Delay Savings at Signalized Intersections: A Case Study of Dalian BRT Line No.1
Procedia - Social and Behavioral Sciences, 96, 828–837.
author keywords: Bus Rapid Transit; Signalized intersection; Green extension; Green recall; Traffic volume; Delay; Analytical approach
TL;DR:
T theoretical analysis based on signal display graphs of differential TSP granting strategies was undertaken to estimate delay savings and increments for prioritized and non- prioritized approaches respectively, and results show that unconditional TSP is feasible during off-peak hours, while for peak hours, feasibility of unconditional T SP mainly depended on the traffic volume of each approach.
(via Semantic Scholar)
Source: ORCID
Added: December 17, 2020
2012 journal article
Modeling Modal Shift of Car Travelers to Buses Based on Public Transport Priority
Journal of Transportation System Engineering and Information Technology.
Source: ORCID
Added: December 17, 2020
2010 conference paper
Design of Signal Timing Optimization Based on the Unsymmetrical Traffic Flow of Signalized Intersections
Traffic and Transportation Studies 2010.
TL;DR:
This paper analyzed the survey data of Wuyi Road-Southwest Road intersection, Dalian, calculated the current capacity and delays, then re-organized traffic flow according to the practical traffic demand and designed an unsymmetrical five-phase signal timing scheme based on the principle of overlap phase.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: December 17, 2020
Employment
Updated: April 25th, 2024 10:16
2019 - present
North Carolina State University Raleigh, NC, US
Research Associate
ITRE
2017 - 2019
University of Wyoming Laramie, WY, US
Post-Doc Research Associate
2013 - 2013
Shanghai Urban Planning and Design Research Institute Shanghai, CN
Education
Updated: May 30th, 2018 11:18
2013 - 2017
University of Nevada Reno Reno, NV, US
Ph.D.
Civil and Environmental Enginering
2011 - 2012
University of Southampton Southampton, Hampshire, GB
MS in Transportation Planning and Engineering
2005 - 2010
Dalian Jiaotong University Dalian, Liaoning, CN
BEng in Traffic + Software Engineering
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