Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 1701-1720 of 4147
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Development of Daily Adjustment Factors for Bicycle Traffic
(American Society of Civil Engineers, 2013)Daily and monthly adjustment factors have traditionally been used to expand the estimation of daily traffic volumes into average monthly and average annual traffic. However, research efforts that are devoted to developing ... -
Robust Method for Automated Segmentation of Frames with/without Distress from Road Surface Video Clips
(American Society of Civil Engineers, 2014)Automated processing of road surface video clips captured for road condition assessment is necessary to detect the existence of road surface distress in less time and efforts. This paper presents a robust method for automated ... -
New Automatic Incident Detection Algorithm Based on Traffic Data Collected for Journey Time Estimation
(American Society of Civil Engineers, 2013)A new automatic incident detection algorithm based on the available data originally collected for journey time estimation in Hong Kong is proposed in this paper. Instead of installing a greater number of expensive detectors, ... -
Fleet Size Estimation for Snowplowing Operation Considering Road Geometry, Weather, and Traffic Speed
(American Society of Civil Engineers, 2013)Estimating truck fleet size for winter road maintenance, such as snowplowing, is a challenging task for highway maintenance agencies. To estimate the fleet size for a snowplowing operation, a mathematic model is developed ... -
Analyzing Influence Factors of Transverse Cracking on LTPP Resurfaced Asphalt Pavements through NB and ZINB Models
(American Society of Civil Engineers, 2013)The negative binomial (NB) and zero-inflated negative binomial (ZINB) models were employed to simulate the development of pavement transverse cracks on asphalt overlays and to evaluate the influence of different designs ... -
Implications of Distracted Driving on Start-Up Lost Time for Dual Left-Turn Lanes
(American Society of Civil Engineers, 2013)Previous research has found that distracted driving measurably increases driver response times to unanticipated roadway hazards. These instances are of particular consequence as they tend to be highly correlated with vehicle ... -
Recommendations for Numerical Rail Substructure Modeling Considering Nonlinear Elastic Behavior
(American Society of Civil Engineers, 2013)This paper considers the problem of modeling railway track substructure. The most commonly used methodology for designing the railway substructure cross section does not considerably differ from that proposed in the 1980s. ... -
Analysis of Near-Surface Cracking under Critical Loading Conditions Using Uncracked and Cracked Pavement Models
(American Society of Civil Engineers, 2013)In this paper, the mechanism of near-surface cracking under critical loading conditions was investigated using mechanistic modeling approaches. These loading conditions were represented by a combination of nonuniform tire ... -
Investigation of the Effect of Weight Factor on Performance of Piezoelectric Weigh-in-Motion Sensors
(American Society of Civil Engineers, 2013)Trucking industry growth increases loads on existing roads and may raise the possibility of overloaded vehicles, which consequently cause significant damage to pavement. Weigh-in-motion (WIM) technology improves weight ... -
Novel Online Safety Observer for Railway Interlocking System
(American Society of Civil Engineers, 2013)Due to the complexity and size of railway interlocking systems, conventional verification and testing techniques are not able to provide sufficient safety assurance. This paper proposes an online observer for safety assurance ... -
Reliability Analysis of Vehicle Stability on Combined Horizontal and Vertical Alignments: Driving Safety Perspective
(American Society of Civil Engineers, 2013)A driver/vehicle/road closed loop dynamic simulation model considering three-dimensional (3D) alignment was established using Matlab/Simulink for reliability analysis of vehicle stability on the combined horizontal and ... -
Cost-Effectiveness Analyses of Maintenance Treatments for Low- and Moderate-Traffic Asphalt Pavements in Tennessee
(American Society of Civil Engineers, 2013)The effectiveness and cost-effectiveness of resurfacing maintenance treatments applied to low- and moderate-traffic asphalt pavements in Tennessee were evaluated based on the pavement condition data and costs of identified ... -
Correlation among Road Unevenness Indicators and Vehicle Vibration Response
(American Society of Civil Engineers, 2013)This paper estimates the correlations among nine vertical vibration responses on two vehicle planar models (passenger car and heavy truck) and 27 different road unevenness indicators (RUI) of longitudinal road profile. The ... -
Exploring the Association between Traffic Safety and Geometric Design Consistency Based on Vehicle Speed Metrics
(American Society of Civil Engineers, 2013)Past design consistency research has demonstrated the relationship between operating speeds and geometric design features on two-lane rural highways. However, little is known about the relationship between geometric design ... -
Development of a Bidirectional Pedestrian Stream Model with an Oblique Intersecting Angle
(American Society of Civil Engineers, 2013)This paper establishes a mathematical model that can represent the conflicting effects of two pedestrian streams that have an oblique intersecting angle in a large crowd. In a previous paper, a controlled experiment in ... -
Discussion of “Traffic Signal Optimization with Greedy Randomized Tabu Search Algorithm” by Ta-Yin Hu and Li-Wen Chen
(American Society of Civil Engineers, 2013) -
Motorcyclist Braking Performance in Stopping Distance Situations
(American Society of Civil Engineers, 2013)Motorcycle braking distance is one of the main components of motorcycle stopping sight distance. Motorcycle braking performance in different situations was not consistent in published literature. This research measured the ... -
Development of City-Specific Driving Cycles for Transit Buses Based on VSP Distributions: Case of Beijing
(American Society of Civil Engineers, 2013)With the rapid increase of automobile ownership, the city of Beijing, China, faces challenging issues with regard to traffic congestion and vehicle emissions. In seeking solutions to these issues, developing and improving ... -
Optimal Allocation of Lane Space and Green Splits of Isolated Signalized Intersections with Short Left-Turn Lanes
(American Society of Civil Engineers, 2013)At an isolated signalized intersection, the capacity of the lane group with a short left-turn lane heavily depends on the short lane length and the effective green time allocated for the lane group, as does the capacity ... -
Road Grade Measurement Using In-Vehicle, Stand-Alone GPS with Barometric Altimeter
(American Society of Civil Engineers, 2013)Real-world vehicle fuel use and emission rates are sensitive to road grade. There is a need for a practical method for measuring road grade in combination with on-board measurement of vehicle activity, energy use, and ...