Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 901-920 of 4147
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Robust Deep Learning Architecture for Traffic Flow Estimation from a Subset of Link Sensors
(ASCE, 2020)Traffic flow data are needed for traffic management and control applications as well as for transportation planning issues. Such data are usually collected from traffic sensors; however, it is not practical or even feasible ... -
Optimizing Road Gradients Regarding Earthwork Cost, Fuel Cost, and Tank-to-Wheel Emissions
(ASCE, 2020)Emissions reduction has emerged as one of the principal targets in the planning and designing of road alignment today, and intelligent design methods can help optimize road alignment as a response toward more sustainable ... -
Modeling 85th Percentile Speed Using Spatially Evaluated Free-Flow Vehicles for Consistency-Based Geometric Design
(ASCE, 2020)This paper investigates the free-flow condition suitable for four-lane divided highways and proposes spatial free-flow speed–based operating speed prediction models. The 85th percentile speed (V85) of spatially evaluated ... -
Method for Assessing Effect of Input Parameters on Multiobjective Optimization of Signal Control
(ASCE, 2020)There is an increasing interest in signal-timing optimization methods that can consider mobility, safety, and emissions measures simultaneously. The introduction of new models increases the complexity of the required inputs ... -
Lane Management with Variable Lane Width and Model Calibration for Connected Automated Vehicles
(ASCE, 2020)Connected autonomous vehicles (CAVs) may be able to operate with less longitudinal and lateral spacing than traditional human-driven vehicles (HVs) due to fast and precise control technologies and cooperative maneuvers. ... -
Hybrid Signal Priority and Full Actuation for Isolated Large Four-Leg Circular Intersections
(American Society of Civil Engineers, 2019)In cities with bus rapid transit (BRT) systems, median bus-only lanes (MBLs) may extend to a circular intersection of two arterials. Making the MBLs traverse the central island is advantageous to BRT vehicles with less ... -
Optimizing the Location of U-Turn Median Openings at Signalized Intersections with Multitype Vehicles
(American Society of Civil Engineers, 2019)The location of a U-turn median opening has an important effect on traffic flow operations for a shared left-turn and U-turn (SLU) lane with traffic signals. It is the first thing to analyze the influences of the arrival ... -
Random Coefficient Models for Work Zone Headway Distribution
(American Society of Civil Engineers, 2019)Vehicle headways in work zones are disaggregated into two types in this study—truck-involved (e.g., car-truck) and nontruck-involved (e.g., car-car) headways. Considering the possible effects of vehicle-following ... -
A Vertical Railroad Alignment Design with Construction and Operating Costs
(American Society of Civil Engineers, 2019)Vertical alignment profiles are generally governed by geographical constraints; however, vertical alignment design is important, as it may significantly affect operating decisions such as travel time and tractive and braking ... -
Calibration and Validation of Psychophysical Car-Following Model Using Driver’s Action Points and Perception Thresholds
(American Society of Civil Engineers, 2019)This study develops a method of calibrating and validating the Wiedemann car-following model using vehicle trajectory data. Unlike sensitivity analysis and optimization, this method conforms to the assumptions of the ... -
Automated Identification of Fastest Vehicle Paths at Roundabouts
(American Society of Civil Engineers, 2019)The geometric design of a roundabout follows an iterative process that aims to achieve an optimal balance among safety provisions, operational performance, and large vehicle accommodation. The evaluation of safety involves ... -
Annual Average Daily Traffic Prediction Model for Minor Roads at Intersections
(American Society of Civil Engineers, 2019)Annual average daily traffic (AADT) is an important element for maintenance, safety, environmental analysis, finance, engineering economics, and performance management. Most previous studies were conducted to estimate AADT ... -
Modeling Speed and Capacity Estimation at Urban Midblock Sections under the Influence of Crossing Pedestrians
(American Society of Civil Engineers, 2019)Pedestrian crossing at undesignated midblock locations is a prevalent phenomenon in developing countries like India that adversely affects the traffic performance of such sections. The present study aims to determine the ... -
Explaining Freeway Breakdown with Geometric Brownian Motion Model
(American Society of Civil Engineers, 2019)A traffic volume which can trigger a breakdown event at one point in time may not trigger it at another time. The critical question is why a roadway under the same loading is stable in one instance and unstable in another. ... -
Empirical Analysis of Operating Speed Performance on Undivided Hilly Roads
(American Society of Civil Engineers, 2019)Drivers’ speed choice on a curve depends on their perception of the safety offered by that particular geometric element. Perception is a latent variable and is difficult to measure directly from the field. This study assumed ... -
Predicting Highway–Rail Grade Crossing Collision Risk by Neural Network Systems
(American Society of Civil Engineers, 2019)In this paper, train-vehicle crash risk at highway–rail grade crossings (HRGCs) is analyzed with a neural network (NN) model to return meaningful rankings of crash-contributory-variable importance based on different criteria, ... -
Impacts of Work Zone Component Areas on Driver Injury Severity
(American Society of Civil Engineers, 2019)The establishment of work zones along roadways is considered a necessity for the construction of new roadways, the maintenance of deteriorating structures, and to provide access for the installation and maintenance of ... -
Field Verification of Directional Rumble Strips to Deter Wrong-Way Freeway Driving
(American Society of Civil Engineers, 2019)This paper summarizes the results of Phase II of a research project developing a novel design of directional rumble strips (DRSs) to deter wrong-way driving (WWD) onto freeway off-ramps. In Phase I of this project, five ... -
Road Network Vulnerability Analysis: Case Study Considering Travel Demand and Accessibility Changes
(American Society of Civil Engineers, 2019)Road network vulnerability analysis is helpful in the improvement of vulnerable links with proper maintenance investments and management strategies. This paper addresses issues that have received limited attention in past ... -
Improving Ridership and Reducing Subsidy for Premium Bus Service in Kolkata Metro City
(American Society of Civil Engineers, 2019)In several emerging countries such as India, premium quality buses (buses with enhanced comfort and security) are introduced with an aim to attract private car owners (choice riders). However, lack of ridership and high ...