Browsing Journal of Transportation Engineering, Part A: Systems by Title
Now showing items 1-20 of 3910
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3D Calculation of Stopping-Sight Distance from GPS Data
(American Society of Civil Engineers, 2006)Sight distance is a key element in highway geometric design. Existing models for evaluating sight distance are applicable only to two-dimensional (2D), separate horizontal, and vertical alignments or simple elements of ... -
3D FE Analysis of Flexible Pavement with Geosynthetic Reinforcement
(American Society of Civil Engineers, 2006)A series of finite element (FE) simulations are carried out to evaluate the benefits of integrating a high modulus geosynthetic into the pavement foundation. The simulations are conducted under a parametric study to ... -
3D Modeling of Highway Guardrails for Sight Distance Assessment
(ASCE, 11/1/2021)Safety barriers limit the severe consequences to occupants of vehicles leaving the roadway from colliding with obstacles, yet they may significantly reduce the available sight distance (ASD). A procedure was devised to ... -
3R Standards Implementation
(American Society of Civil Engineers, 1985)The Surface Transportation Assistance Act of 1982 increased the Federal funding for highway improvements by well over 50%. In that act, Congress also directed that a large portion of the non‐Interstate funds be used for ... -
85th and 98th Percentile Speed Prediction Models of Car, Light, and Heavy Commercial Vehicles for Four-Lane Divided Rural Highways
(American Society of Civil Engineers, 2018)In this study, the 85th and 98th percentile speed prediction models of car, light, and heavy commercial vehicles for four-lane divided horizontal curves in rural highways were developed using a stepwise multiple linear ... -
A Car-Following Model Considering Driver’s Instantaneous Reaction Delay in Nonlane-Based Traffic Environments
(ASCE, 2022/06/03)Reaction delay is an indispensable factor in the operation and control process of drivers in a car-following scenario. Utilizing trajectory data obtained from an instrumented vehicle, this paper proposes a data-driven ... -
A Car-Following Network Model: An Analysis of Trip Delay
(ASCE, 2022/06/23)In this study, 20 drivers, who maintain a safe distance at all speeds, are monitored to help determine the principal reason for trip delay. The aim was to develop a driver-assisted technology device or devices to enhance ... -
A Case for Feedback Control to Prevent Delay
(ASCE, 2020)This study was motivated by the work of researchers who conducted field experiments on roadways with no bottlenecks. The ring roads are circular roadways where passing was restricted. All drivers who took part in these ... -
A Causal Inference–Based Speed Control Framework for Discretionary Lane-Changing Processes
(ASCE, 5/27/2023 )Vehicle lane changing is one of the most important topics in autonomous driving and is the behavior most likely to cause vehicle accidents. In order to optimize the performance of vehicle lane change by controlling the ... -
A CNN-LSTM Model for Short-Term Passenger Flow Forecast Considering the Built Environment in Urban Rail Transit Stations
(American Society of Civil Engineers, 2024)The rapid expansion of urban rail transit necessitates accurate short-term passenger flow forecasts (STPFF) to optimize operation plans and enhance service quality. However, the existing STPFF methods do not fully consider ... -
A Connected Emergency Response System to Facilitate the Movement of Multiple Emergency Response Vehicles through Two-Way Roadways
(ASCE, 2024/05/01)Emergency response vehicles (ERVs) need to move fast, which can lead to potential accidents. A system is proposed to utilize connected vehicle technology for facilitating the movement of multiple ERVs in a two-way roadway. ... -
A Connected Vehicle System with High-Availability and Low-Bandwidth Requirement for First Responders
(ASCE, 6/22/2023 )This paper presents design and implementation of a high-availability, low-bandwidth requirement vehicular and portable connectivity system which allows first responders to communicate relevant and timely information. Since ... -
A Data-Driven Case Study Following the Implementation of an Adaptive Traffic Control System in Midtown Manhattan
(ASCE, 2022-02-15)This paper evaluated the congestion reduction benefits over a 6-year period from the implementation of an adaptive traffic control system (ATCS) in a congested area of Manhattan, New York, bounded by 2nd and 6th Avenues ... -
A Data-Driven Method for Congestion Identification and Classification
(ASCE, 2022-02-09)Congestion detection is one of the key steps in reducing delays and associated costs in traffic management. With the increasing use of global positioning system (GPS)-based navigation, promising speed data are now available. ... -
A Decision Support Tool for Accommodating Right-Turning Trucks at Urban Intersections in Walkable Communities
(ASCE, 2022/10/01)Many North American jurisdictions are creating walkable urban environments through compact Complete Streets (CS) geometric designs, while not addressing the mobility and accessibility of goods despite the essential role ... -
A Disaggregated Approach to Estimate the Spatial Distributional Effects of Implemented Toll Road Systems
(ASCE, 2023/12/01)This study presents a methodology in a disaggregated manner to assess the spatial distributional effects of implemented toll road networks. Existing zone-based research focuses only on revealing the existence of regressivity. ... -
A Disturbance-Driven Textual Model for Train Running Time Prediction on High-Speed Railways
(American Society of Civil Engineers, 2024)Accurately predicting train running times (TRTs) during disturbances is crucial for effective timetable rescheduling. Previous studies on train running prediction have overlooked the detailed textual description of disturbance ... -
A Field Study about the Effects of Asymmetric Visual Perception on Lateral Driving Behaviors on Curves
(American Society of Civil Engineers, 2024)The hypothesis that drivers are balancing perceptual speed on both sides of the visual field is proposed through the analysis of the driver’s decision on lateral positioning. Moreover, the temporal frequency of the occurrence ... -
A Framework for Assessing Models that Rank Highway-Rail Grade Crossings for Improvement
(American Society of Civil Engineers, 2005)In the Midwest, three states in recent years have re-examined their grade crossing model. Illinois conducted a study that developed a new model, the expected accident frequency formula, using a nonlinear regression analysis ... -
A Game/Simulation for Transportation Management
(American Society of Civil Engineers, 1986)This paper describes a game/simulation designed to involve community members in the development and selection of Transportation Systems Management (TSM) strategies for solving neighborhood traffic problems. The simulation ...