Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 961-980 of 4147
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Major Stream Delay under Limited Priority Conditions
(American Society of Civil Engineers, 2019)Under a limited priority situation, U-turning vehicles attempt to accept smaller gaps, which compels approaching through vehicles to slow down and experience delays. Delay within the median opening area is termed median ... -
Traffic Modeling for Wildland–Urban Interface Fire Evacuation
(American Society of Civil Engineers, 2019)Several traffic modeling tools are currently available for evacuation planning and real-time decision support during emergencies. This paper reviews potential traffic-modeling approaches in the context of wildland–urban ... -
Operational Scenario Definition in Traffic Simulation-Based Decision Support Systems: Pattern Recognition Using a Clustering Algorithm
(American Society of Civil Engineers, 2019)This paper is intended to mine historical data by presenting a scenario clustering approach to identify appropriate scenarios for mesoscopic simulation as a part of the evaluation of transportation projects or operational ... -
Safety and Operational Effects of the Interstate 66 Active Traffic Management System
(American Society of Civil Engineers, 2019)An active traffic management (ATM) system was activated on Interstate 66 (I-66) in northern Virginia in September 2015. The ATM system included advisory variable speed limits (AVSLs), lane-use control signals (LUCS), and ... -
Optimization Model to Determine Critical Budgets for Managing Pavement and Safety: Case Study on Statewide County Roads
(American Society of Civil Engineers, 2019)This study develops a model that combines pavement and safety management system to utilize the resources more efficiently. Sometimes decision makers and road engineers need to estimate critical budgets to maintain and ... -
Survival Analysis of Bus Running Time near Bus-Stop Areas
(American Society of Civil Engineers, 2019)This study proposes a quantitative approach to evaluate the effects of mixed traffic flow on bus running times (except bus dwell times) near bus-stop areas based on linear regression and survival analysis theory. Research ... -
Bayesian Regression Approach to Estimate Speed Threshold under Uncertainty for Traffic Breakdown Event Identification
(American Society of Civil Engineers, 2019)This study aims at developing a robust Bayesian statistical approach to determine the speed threshold (ST) for detecting a traffic breakdown event using traffic flow parameters. Data collected from a freeway section of ... -
Relationship between Lane Width and Safety along Urban Expressways in Shanghai
(American Society of Civil Engineers, 2019)Safety issues along urban expressways have gained increasing attention for their direct impact on traffic operation, especially after a substantial amount of reconstruction work that altered the cross section designs to ... -
Combining Road Network Data from OpenStreetMap with an Authoritative Database
(American Society of Civil Engineers, 2019)Computer modeling of road networks requires a detailed and up-to-date data set. This paper proposes a method of combining authoritative databases with the OpenStreetMap (OSM) system. The complete route is established by ... -
Sea-Level Rise Vulnerability Assessment of Bicycle and Trail Networks
(American Society of Civil Engineers, 2019)Transportation infrastructure continues to be at risk to climate change impacts including sea-level rise (SLR) inundation. Past studies have primarily focused on motorized facilities; however, nonmotorized systems also are ... -
Stochastic Schedule–Based Optimization Model for Track Allocations in Large Railway Stations
(American Society of Civil Engineers, 2019)This paper develops a track allocation model for large railway stations based on stochastic schedules, which considers balanced utilization as well as minimum occupation time of station tracks. The stochastic schedule is ... -
Extracting Topographic Data from Online Sources to Generate a Digital Elevation Model for Highway Preliminary Geometric Design
(American Society of Civil Engineers, 2019)Two principal aspects of preliminary highway design are detailed characterization of the geographic and topographic features along potential candidate alignments and preliminary design of the highway along at least one of ... -
Impact of On-Ramp Traffic Flow Arrival Profile on Queue Length at Metered On-Ramps
(American Society of Civil Engineers, 2019)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. It is therefore important to provide adequate queue storage space to prevent ramp queue ... -
Modeling Capacity at Signalized Intersections with a Left-Turn Storage Bay Considering Signal Timing Plan
(American Society of Civil Engineers, 2019)Adding lanes is a common method to increase the capacity at intersections. The additional turning lanes are often limited by the road configuration. The paper presents a probabilistic model to calculate the total capacity ... -
Railway Trespass Prevention: Spatial Analysis of Incidents to Connect to Countermeasures
(American Society of Civil Engineers, 2019)Railway incidents continue to be a safety concern for transportation agencies throughout the United States. In particular, trespasser incidents, which are the most frequent cause of railway fatalities in the United States, ... -
Feasibility Assessment for Implementing Adaptive Traffic Signal Control
(American Society of Civil Engineers, 2019)Adaptive traffic control systems (ATCS) continuously adapt to changing traffic in order to improve traffic performance at signalized intersections. Typical before–after studies evaluate the success of ATCS deployments by ... -
Analysis of Incident-Induced Capacity Reductions for Improved Delay Estimation
(American Society of Civil Engineers, 2019)This paper investigates the randomness in incident-induced capacity reductions and discusses the further impacts on delay calculation and modeling. For this purpose, incident and traffic count data sets from four important ... -
Phantom Traffic: Platoon Formed at Low Traffic Density
(American Society of Civil Engineers, 2019)On a highway, it is generally observed that as traffic flow increases, vehicles tend to travel closely and form platoons. However, sometimes platoons are formed at even a low traffic density and therefore a high traffic ... -
If Safety Matters, Let’s Measure It: Nationwide Survey Results for Bicycle and Pedestrian Treatment Prioritization
(American Society of Civil Engineers, 2019)Bicycling and walking can provide public health and quality of life benefits to a community, but safety concerns and crash rates for those who choose to bicycle or walk remain high. To better understand how agencies decide ... -
Saturation Flow Models of Exit Lanes for Left-Turn Intersections
(American Society of Civil Engineers, 2019)A newly proposed unconventional intersection design, exit lanes for left-turn (EFL) intersections, has been demonstrated to be very promising for capacity improvement. However, the difference in saturation flow rates at ...