Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 1761-1780 of 4147
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Variable Speed Limit Control Design for Relieving Congestion Caused by Active Bottlenecks
(American Society of Civil Engineers, 2013)Variable speed limit (VSL) can be used on freeways to manage traffic flow with the goal of improving capacity. To achieve this objective, it is necessary that both speed and density dynamics be represented accurately. In ... -
Measuring Horizontal Curve Vehicle Trajectories and Speed Profiles: Pneumatic Road Tube and Video Methods
(American Society of Civil Engineers, 2013)Horizontal curves present drivers with numerous tasks that, if not performed while approaching and negotiating the curve, may result in a roadway departure crash. A vehicle’s lateral position within the lane and its speed ... -
Full Closure or Partial Closure? Evaluation of Construction Plans for the I-5 Closure in Downtown Sacramento
(American Society of Civil Engineers, 2013)Three alternative construction plans with full highway closures and limited capacity closures (partial closures) are evaluated for a large-scale freeway reconstruction project in the Sacramento metropolitan area. By using ... -
Operating Speed of Different Classes of Vehicles at Horizontal Curves on Two-Lane Rural Highways
(American Society of Civil Engineers, 2013)The majority of operating speed models reported in the literature primarily consider passenger cars and only rarely consider heavy vehicles. No study on the influence of geometry on speeds of other classes of vehicles like ... -
Cone Penetrometer with a Helical-Type Outer Screw Rod for Evaluation of the Subgrade Condition
(American Society of Civil Engineers, 2013)A weak railway subgrade may lead to instability of the railway track system. The condition of a railway subgrade is typically evaluated using trial pit excavation and a portable ballast sampler, which may severely disturb ... -
Incorporating Weather Information into Real-Time Speed Estimates: Comparison of Alternative Models
(American Society of Civil Engineers, 2013)Weather information is frequently requested by travelers. Prior literature indicates that inclement weather is one of the most important factors contributing to traffic congestion and crashes. This paper proposes a methodology ... -
Methodology to Estimate the Distance Traveled by Trucks on Rural Highway Systems
(American Society of Civil Engineers, 2013)Truck travel, normally expressed in terms of truck vehicle-distance travel (VDT), is a critical data requirement for the design, construction, operation, and management of rural highway systems. The need to estimate and ... -
Developing a Network-Level Structural Capacity Index for Asphalt Pavements
(American Society of Civil Engineers, 2013)This paper presents a network-level structural capacity indicator for asphalt pavements in the state of Virginia. A literature review revealed that several network-level structural capacity indexes have been proposed, and ... -
Road Transition Zones between the Rural and Urban Environment: Evaluation of Speed and Traffic Performance Using a Microsimulation Approach
(American Society of Civil Engineers, 2013)A microsimulation approach is presented for evaluating the effectiveness of a transition zone connecting the rural to the urban environment using speeds computed in simulation for showing whether drivers slow down far ... -
Cross-Section Designs for the Safety Performance of Buffer-Separated High-Occupancy Vehicle Lanes
(American Society of Civil Engineers, 2013)This study proposes a methodology to determine the optimal cross-sectional design of a high-occupancy vehicle (HOV) facility for safety performance by evaluating the effects of each relevant design element on safety and ... -
Development of Emergency Track Beam Alignment for Rapid Track Beam Replacement of Straddle Monorail Transit
(American Society of Civil Engineers, 2013)Prestressed concrete (PC) track beams are the important component of straddle monorail transit systems. To ensure the normal operation of straddle monorail transit, a type of prefabricated steel track beam, termed an ... -
Disabled Pedestrian Level of Service Method for Evaluating and Promoting Inclusive Walking Facilities on Urban Streets
(American Society of Civil Engineers, 2013)Current analytical methods to estimate the pedestrian level of service (PLOS) usually only consider a narrow range of pedestrians and may not be applicable for more diverse pedestrian populations with different characteristics. ... -
Development of the Triangular Model for Pavement Evaluation Using the Rolling Wheel Deflectometer
(American Society of Civil Engineers, 2013)Using the rolling wheel deflectometer (RWD), which measures pavement deflections at traffic speeds, offers the potential to characterize the structural capacity of the road network without major delays and to do so in a ... -
AHP-Based Approach for Location Planning of Pedestrian Zones: Application in Montréal, Canada
(American Society of Civil Engineers, 2013)Location planning for pedestrian zones is a multifaceted problem. The selection of best location from a list of potential stations involves consideration of different technical, economical, environmental, and social factors. ... -
Effects of Innovative Portable Plastic Rumble Strips at Flagger-Controlled Temporary Maintenance Work Zones
(American Society of Civil Engineers, 2013)This study evaluated the effects of portable plastic rumble strips (PPRSs) on speed reduction and drivers’ behaviors in advance of flagger-controlled work zones. Travel speed data were collected at three two-lane highways ... -
Validating MEPDG with Tennessee Pavement Performance Data
(American Society of Civil Engineers, 2013)To implement the Mechanistic-Empirical Pavement Design Guide (MEPDG) developed by AASHTO for pavement construction and rehabilitation, it is necessary to evaluate its performance prediction models using actual pavement ... -
Empirical Study of Gap-Acceptance Behavior of Right-Turn-on-Red Drivers on Dual Right-Turn Lanes
(American Society of Civil Engineers, 2013)Operational performance of right-turn-on-red (RTOR) at signalized intersections is a function of drivers’ gap-acceptance behavior. The objective of this study is to characterize gap-acceptance behavioral patterns of ... -
Evaluation of Temperature-Induced Curling in Concrete Slabs Using Deflection Difference Analysis
(American Society of Civil Engineers, 2013)The curling and warping of rigid pavements are the results of temperature and moisture gradients varying with depth, creep, and other factors, including construction. The indicators commonly used to evaluate slab deformation ... -
Pedestrian Behavior at Signalized Pedestrian Crossings
(American Society of Civil Engineers, 2013)The objective of this research was to define eventual differences in models of pedestrian behavior at signalized pedestrian crossings, with and without countdown displays. The outcomes of this work represent a contribution ... -
Correlation between Degree of Complexity and Efficiency for Intersections in China
(American Society of Civil Engineers, 2013)Intersection performance, in terms of the degree of complexity and efficiency defined from a traffic conflict point of view, was studied for this paper. The degree of intersection complexity was determined by conflict ...