Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 1001-1020 of 4147
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New Concept Design of Directional Rumble Strips for Deterring Wrong-Way Freeway Entries
(American Society of Civil Engineers, 2018)Drivers who make wrong-way entries onto freeways pose a serious risk to the safety of other motorists and themselves. As a new countermeasure to mitigate the wrong-way entry issue, directional rumble strips (DRSs) were ... -
Utilizing Social Media in Transport Planning and Public Transit Quality: Survey of Literature
(American Society of Civil Engineers, 2018)The purpose of the present study is to examine whether mining and analyzing social media data can be a powerful tool in the transportation domain. A survey of the literature based on the existing uses of social media in ... -
Analysis of Kinematic Parameters and Driver Behavior at Turbo Roundabouts
(American Society of Civil Engineers, 2018)This study focuses on both vehicle kinematic parameters (speed and acceleration) and behavior parameters (critical interval and follow-up time) of drivers at turbo-roundabouts. Empirical evaluations of such parameters can ... -
Extracting Arterial Access Density Impacts on Safety Performance Based on Clustering and Computational Analysis
(American Society of Civil Engineers, 2018)Access density is defined as the number of accesses per unit length along an arterial. Numerous studies conducted in various regions have indicated that access density has a significant influence on crash occurrences and ... -
New Consistency Model Based on Inertial Operating Speed Profiles for Road Safety Evaluation
(American Society of Civil Engineers, 2018)Road crashes are mainly caused by three concurrent factors: infrastructure, vehicles, and human factors. The interaction between infrastructure and human factors leads to the concept of geometric design consistency, which ... -
Quantifying Bending Moments in Rail-Transit Concrete Sleepers
(American Society of Civil Engineers, 2018)With use of concrete sleepers increasing for rail-transit applications in the United States, it is becoming more critical to quantify their revenue service flexural demands to improve sleeper design and maintenance practices. ... -
Examining the Relationship between Drivers’ Anticipated Travel Time and Previous Experienced Travel Times
(American Society of Civil Engineers, 2018)Travel time reliability refers to the day-to-day variability of trip travel times. There is a belief that there is a cost associated with unreliability and this cost can be quantified as a function of the difference between ... -
Quantitative Analysis of Smooth Progression in Traffic Signal Systems
(American Society of Civil Engineers, 2018)Traffic signal coordination has been widely used to provide smooth progression for platoons on signalized arterials to enhance performance measures such as travel times, number of stops, and delay. Considering smooth ... -
Concurrent Optimization of Signal Progression and Crossover Spacing for Diverging Diamond Interchanges
(American Society of Civil Engineers, 2018)Diverging diamond interchanges (DDIs) are widely recognized to be capable of reducing conflict points, number of stops, and consequently average traffic delay. However, the design of their crossover spacing and signal ... -
Tamping and Renewal Optimization of Ballasted Track Using Track Measurement Data and Genetic Algorithm
(American Society of Civil Engineers, 2018)Although reliability centered maintenance (RCM) has been used widely in the maintenance and renewal (M&R) of railway infrastructures, M&R methods and maintenance frequencies still require considerable study to ... -
Developing a Systematic Method for Identifying and Ranking Freeway Bottlenecks Using Vehicle Probe Data
(American Society of Civil Engineers, 2018)Traffic congestion and freeway bottlenecks continue to challenge existing transportation networks. This study presents a systematic method to evaluate freeway performance and locate and rank freeway bottlenecks while ... -
New Approach for Estimating Passenger Car Units on Multilane Urban Roads with Heterogeneous Traffic Conditions
(American Society of Civil Engineers, 2018)This paper illustrates a newly developed methodology for passenger car unit (PCU) estimation under non-lane–based heterogeneous traffic conditions on multilane urban roads, using area occupancy as a measure of performance. ... -
Transit Delay Estimation Using Stop-Level Automated Passenger Count Data
(American Society of Civil Engineers, 2018)Despite the potential use of global positioning system (GPS) based automatic vehicle location (AVL) data in the development of reliability improvement strategies for transit systems, issues with privacy and accuracy have ... -
Joint Prediction of Remaining Useful Life and Failure Type of Train Wheelsets: Multitask Learning Approach
(American Society of Civil Engineers, 2018)Train wheel failures account for disruptions of train operations and even a large portion of train derailments. Remaining useful life (RUL) of a wheelset measures how soon the next failure will arrive, and the failure type ... -
Examining Travel Time Reliability-Based Performance Indicators for Bus Routes Using GPS-Based Bus Trajectory Data in India
(American Society of Civil Engineers, 2018)This paper aims to evaluate travel time variability as well as reliability indexes using global positioning systems (GPS)–based trajectory data of bus trips collected along a selected bus route of the city of Chennai in ... -
Two-Stage Bicycle Traffic Assignment Model
(American Society of Civil Engineers, 2018)Cycling has been considered as a healthy, environmentally friendly, and economical alternative mode of travel to motorized vehicles (especially private motorized vehicles). However, bicycles have often been neglected in ... -
What Characterizes a Vehicle as Follower on Two-Lane Intercity Highways under Heterogeneous Traffic Conditions
(American Society of Civil Engineers, 2018)The presence of a high proportion of vehicles in the following condition indicates that a particular roadway facility is performing poorly. Due to lack of related standard guidelines, planners and engineers in India use ... -
Model of Transition Delay for Unaccommodated Pedestrian Timing
(American Society of Civil Engineers, 2018)This paper addresses signal transitions due to outsized or oversized pedestrian timing. This form of transition happens at coordinated intersections when the side-street required green time is less than the required ... -
Correlated Random Parameter Marginalized Two-Part Model: Application to Refined-Scale Longitudinal Crash Rates Data
(American Society of Civil Engineers, 2018)Crash rate data are mainly analyzed using the Tobit model. However, there are three major limitations associated with the Tobit model when it is applied to crash data: (1) the assumption that zeros are originated from ... -
Bus Model with a Rectangular Service Zone Revisit
(American Society of Civil Engineers, 2018)This paper addresses the issue of a bus model with rectangular service zones and the development of a new approach to find the criterion in which the existence of the optimal solution for headway and route width is guaranteed. ...