Institute for Transportation Research and Education
Works Published in 2019
Displaying works 21 - 35 of 35 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2019 journal article
Queue-Based Guidance for Signalization Consideration at Two and Three-Legged Intersections
TRANSPORTATION RESEARCH RECORD, 2673(10), 416–426.
TL;DR:
A data-driven method for determining the need for considering additional signalization analysis at intersections with fewer than four legs is developed, similar to the delay-based level of service D/E threshold for two-way stop-controlled intersections in HCM6 Chapter 19.
(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: January 6, 2020
2019 journal article
Cooperative traffic signal and perimeter control in semi-connected urban-street networks
Transportation Research Part C: Emerging Technologies, 104, 408–427.
Contributors: R. Mohebifard *, S. Islam * & A. Hajbabaie*
author keywords: Cooperative traffic control; Traffic signal optimization; Perimeter control; Distributed optimization and coordination algorithms; Connected vehicles
TL;DR:
An integrated formulation and a distributed solution technique for cooperative signal control and perimeter traffic metering in urban street networks with various market penetration rates of connected vehicles and observed that cooperative signal timing and perimeter control yielded significant improvements in traffic operations.
(via Semantic Scholar)
doi.org (publisher)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: December 10, 2019
2019 journal article
Estimating the geographic distribution of originating air travel demand using a bi-level optimization model
TRANSPORTATION RESEARCH PART E-LOGISTICS AND TRANSPORTATION REVIEW, 131, 267–291.
author keywords: Geographic distribution of originating air travel demand; Bi-level optimization model; Demand estimation; Path flow estimator
TL;DR:
A bi-level optimization model as a relatively quick and less expensive alternative to survey method to estimate the originating air travel demand and its geographic distribution at an airport and a real-world case study in which the model is applied is presented.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: Web Of Science
Added: December 2, 2019
2019 journal article
Characterizing Lane Changes via Digitized Infrastructure and Low-Cost GPS
TRANSPORTATION RESEARCH RECORD, 2673(8), 298–309.
Contributors: I. Ahmed n , A. Karr *, N. Rouphail n, G. Chun n & S. Tanvir n
TL;DR:
Analysis of naturalistic trajectory data revealed that ramp-to-freeway trips had the highest number of discretionary lane changes in excess of 1 lane change/vehicle, and excessive lane change rates were highest between the two middle freeway lanes.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 14, 2019
2019 article
Investigating the effects of nanochemical-based ionic stabilizer and co-polymer on soil properties for pavement construction
INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING.
author keywords: Soil stabilization; nanochemicals; ionic stabilizer; co-polymer; FSI; UCS; CBR
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
Source: NC State University Libraries
Added: September 16, 2019
2019 journal article
Optimal network-level traffic signal control: A benders decomposition-based solution algorithm
Transportation Research Part B: Methodological, 121, 252–274.
Contributors: R. Mohebifard * & A. Hajbabaie*
author keywords: Traffic signal control; Cell transmission model; Benders decomposition; Flow holding-back problem
TL;DR:
It is proved that the proposed solution technique guarantees convergence to optimal solutions with a finite number of iterations and a dual estimation algorithm is proposed for the new MINLP (the Primal problem), which utilizes a simulation-based approach to generate Benders cuts instead of solving a complex optimization program.
(via Semantic Scholar)
Source: ORCID
Added: August 27, 2019
2019 journal article
Distributed Optimization and Coordination Algorithms for Dynamic Traffic Metering in Urban Street Networks
IEEE Transactions on Intelligent Transportation Systems, 20(5), 1930–1941.
Contributors: R. Mohebifard * & A. Hajbabaie*
author keywords: Dynamic traffic metering; perimeter control; distributed optimization; distributed coordination; model predictive control; mixed-integer linear program
TL;DR:
A real-time and scalable methodology for finding near-optimal metering rates dynamically in urban street networks based on the cell transmission model and found significant improvements in network operations as a result of traffic metering.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: August 27, 2019
2019 journal article
A decomposition scheme for parallelization of system optimal dynamic traffic assignment on urban networks with multiple origins and destinations
Computer-Aided Civil and Infrastructure Engineering, 34(10), 915–931.
Contributors: M. Mehrabipour*, L. Hajibabai * & A. Hajbabaie*
TL;DR:
The numerical results show that the decomposition scheme converges to the optimal solution, within 2.0% gap, in substantially less time compared to a benchmark solution, which confirms the computational efficiency of the proposed algorithm.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: August 27, 2019
2019 journal article
A consensus-based distributed trajectory control in a signal-free intersection
Transportation Research Part C: Emerging Technologies, 100, 161–176.
Contributors: A. Mirheli *, M. Tajalli*, L. Hajibabai * & A. Hajbabaie*
author keywords: Distributed algorithm; Coordination; Signal-free; Cooperative; Control logic; Connected and autonomous vehicles
TL;DR:
The results show that the proposed distributed coordinated framework converges to near-optimal CAV trajectories with no conflicts in the intersection neighborhood, while eliminating all near-crash conditions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: August 27, 2019
2019 journal article
National-Level Safety Evaluation of Diverging Diamond Interchanges
TRANSPORTATION RESEARCH RECORD, 2673(7), 696–708.
TL;DR:
This study recommends a total crashes crash modification factor (CMF) of 0.633 based on the comparison group analysis of 26 DDIs in 11 states to provide a more robust and reliable safety assessment of DDI deployments.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Source: Web Of Science
Added: August 26, 2019
2019 journal article
Lane Change Rates at Freeway Weaving Sites: Trends in HCM6 and from NGSIM Trajectories
TRANSPORTATION RESEARCH RECORD, 2673(5), 627–636.
Contributors: I. Ahmed n , D. Xu n, N. Rouphail n & A. Karr *
TL;DR:
Analysis of HCM6 lane change patterns at the NGSIM site revealed a tendency for early merging for freeway to ramp traffic and uniform merging for ramp to freeway traffic over the length of the weave, and a speed analysis showed that a higher frequency of discretionary lane changes yielded lower travel times for drivers executing them.
(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: July 15, 2019
2019 article
Assessing traffic-related environmental impacts based on different traffic monitoring applications
21ST EURO WORKING GROUP ON TRANSPORTATION MEETING (EWGT 2018), Vol. 37, pp. 107–114.
author keywords: Traffic-related environmental impacts; Emissions; VSP
TL;DR:
A methodological approach to assess the capability of different traffic monitoring applications to estimate emissions generated by road traffic and results show a prediction for CO2 emissions of 99% and 98% to NOX.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: Web Of Science
Added: July 1, 2019
2019 journal article
An Analysis of Success Plans and Performance Measures for Rural Transit Systems in North Carolina
TRANSPORTATION RESEARCH RECORD, 2673(3), 97–105.
Source: Web Of Science
Added: June 24, 2019
2019 journal article
Calibration of inertial consistency models on North Carolina two-lane rural roads
ACCIDENT ANALYSIS AND PREVENTION, 127, 236–245.
author keywords: Geometric design consistency; Road safety; Operating speed; Inertial operating speed; Driver's behavior
MeSH headings : Accidents, Traffic / statistics & numerical data; Automobile Driving / psychology; Built Environment; Calibration; Humans; North Carolina; Probability; Rural Population; Safety
TL;DR:
This research aims to validate and calibrate inertial consistency models on American two-lane rural roads to enhance the assessment of road safety to the geometric design of both new two- lane rural roads and improvements of existing highways.
(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: May 28, 2019
2019 journal article
Influence of Calibration Factors on Crash Prediction on Rural Two-Lane Two-Way Roadway Segments
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS, 145(6).
TL;DR:
This research was subsidized by the Spanish Ministry of Economy, Industry, and Competitiveness through "Ayudas a the movilidad predoctoral para the realizacion of estancias breves en centros of I+D 2016".
(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: April 29, 2019
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