Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 2121-2140 of 4147
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Spatial Allocation of Transportation Greenhouse Gas Emissions at the City Scale
(American Society of Civil Engineers, 2011)Greenhouse gas (GHG) accounting for individual cities in large metropolitan areas is confounded by spatial scale and boundary effects that impact the allocation of transportation fuels used for surface transport and airline ... -
How Lane Arrangements on Freeway Mainlines and Ramps Affect Safety of Freeways with Closely Spaced Entrance and Exit Ramps
(American Society of Civil Engineers, 2010)The number and arrangement of lanes on freeways are important considerations in freeway geometric design. The objective of this study is to evaluate the safety impacts of lane arrangements on freeway segments with closely ... -
Simplified Nonlinear Temperature Curling Analysis for Jointed Concrete Pavements
(American Society of Civil Engineers, 2010)The assumption of a linear temperature change through the slab depth has been overwhelmingly used in pavement analysis since Westergaard proposed a curling solution for rigid pavements. However, the actual temperature ... -
Weaving Section Flow Model at the Weaving Area of Malaysian Conventional Roundabout
(American Society of Civil Engineers, 2010)Like in many other countries, Malaysian road users are facing problems with traffic congestion. In urban areas roundabouts are becoming more popular like in Shah Alam but had limitations, among others, such as a geometric ... -
Factors Affecting Driver Speed Choice along Two-Lane Rural Highway Transition Zones
(American Society of Civil Engineers, 2010)Two-lane rural highways attract trips between traffic generators such as residential villages or small commercial areas and are generally uninterrupted flow facilities that provide a high level of mobility with high posted ... -
Determination of Fatigue Life of a Granular Base Material Lightly Stabilized with Slag Lime from Indirect Diametral Tensile Testing
(American Society of Civil Engineers, 2010)Stabilization of granular materials with low percentage of slow setting binders, such as slag lime, for constructing new pavements and/or rehabilitation of existing granular pavements has economical and environmental ... -
Modeling and Simulation of Traffic Movements at Semiactuated Signalized Intersections
(American Society of Civil Engineers, 2010)This work presents a microscopic stochastic simulation model that emulates the traffic movements at signalized intersections with semiactuated signal operation. This model uses the -
Proposed Loading Waveforms and Loading Time Equations for Mechanistic-Empirical Pavement Design and Analysis
(American Society of Civil Engineers, 2010)Under the same applied traffic loading, time is traditionally assumed to be a function of only the vehicle speed and the depth beneath the pavement surface. Additionally, no definite loading waveform has been established ... -
Synchronized Signal Control Model for Maximizing Progression along an Arterial
(American Society of Civil Engineers, 2010)For the most part, optimal signal timing is the most effective and economical method for mitigating traffic congestion in urban areas. In this study, a new mixed integer nonlinear programming model is proposed to develop ... -
Evaluation of the Visibility of Workers’ Safety Garments during Nighttime Highway-Maintenance Operations
(American Society of Civil Engineers, 2010)To reduce traffic congestion in the United States, roadway maintenance and construction operations are widely performed during nighttime hours. This makes visibility a critical issue as workers need to be visible to oncoming ... -
Using GPS Data to Gain Insight into Public Transport Travel Time Variability
(American Society of Civil Engineers, 2010)Transit service reliability is an important determinant of service quality, which has been mainly studied from the perspective of passengers waiting at stops. Day-to-day variability of travel time also deteriorates service ... -
L∞ -Norm Path Flow Estimator for Handling Traffic Count Inconsistencies: Formulation and Solution Algorithm
(American Society of Civil Engineers, 2010)Path flow estimator (PFE) is a single-level network observer proposed to estimate path flows and origin-destination flows from traffic counts in a transportation network. The PFE model handles the traffic count inconsistency ... -
Signal Treatments to Reduce the Likelihood of Heavy Vehicle Crashes at Intersections: Microsimulation Modeling Approach
(American Society of Civil Engineers, 2010)Traffic simulation modeling has been applied to many transport planning and traffic engineering situations. The further development of traffic simulation modeling to study the impact of safety measures in a systematic, ... -
Modeling Skid Resistance of Commercial Trucks on Highways
(American Society of Civil Engineers, 2010)One aspect of commercial truck safety on highways is the risk of skidding. Skidding accidents involving commercial trucks risk injury or death not only to their own occupants but also to other motorists and road users. ... -
Concrete Slab Installed with Carbon Fiber Heating Wire for Bridge Deck Deicing
(American Society of Civil Engineers, 2010)A method of deicing with carbon fiber heating wire (CFHW) buried inside concrete slab is presented in this paper, which avoids the negative effects on structure function and environment caused by traditional deicing salt. ... -
Modeling Pavement Fragility
(American Society of Civil Engineers, 2010)Pavement performance models are the key to efficient designs and effective management practices. Over the years, a number of researchers have developed reliability models to account for the uncertainty in pavement responses ... -
Genetic Algorithm for Bus Frequency Optimization
(American Society of Civil Engineers, 2010)In this paper, a bilevel programming model for the bus frequency design is presented, which determines the optimal bus frequencies aiming to minimize the total travel time of passengers subject to the constraint on the ... -
Short-Term Prediction of Urban Traffic Variability: Stochastic Volatility Modeling Approach
(American Society of Civil Engineers, 2010)This paper addresses the problem of modeling and predicting urban traffic flow variability, which involves considerable implications for the deployment of dynamic transportation management systems. Traffic variability is ... -
Methodology to Analyze Sun Glare Related Safety Problems at Highway Tunnel Exits
(American Society of Civil Engineers, 2010)Good visibility of the road and its surroundings is a basic requirement for safe driving. Glare caused by direct sunlight interferes with drivers’ vision performance. In high-glare conditions the visibility of objects is ... -
Climate Change and Transportation Engineering: Preparing for a Sustainable Future
(American Society of Civil Engineers, 2011)Climate change has been identified by many scientists, engineers, and public officials as one of the significant challenges facing society over the next several decades. And of civil engineered facilities, the transportation ...