Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 44 for “"Highway Capacity"”.
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Assessing the Effect of Traffic Incident Management Areas on Highway Capacity
… within TIMAs significantly impact roadway capacity, requiring an analysis of capacity reduction across different closure scenarios. This study examines the effects of one-lane, two-lane, and three-lane closures on traffic flow and capacity reduction. Data was collected from select locations …
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Field measurement of ideal saturation flow rate from the highway capacity manual
… signalized intersection analyses performed with Highway Capacity Manual (HCM), the Pennsylvania Department of Transportation (PENNDOT) District 12-0 uses an ideal saturation flow rate of 1800 pcphgpl, which is less than the default value of 1900 pcphgpl provided by HCM. This is to account for the …
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Analysis of Freeway Weaving Areas Using Corridor Simulator and Highway Capacity Manual
… same direction along a significant length of the highway without the aid of traffic control devices . The traditional methods used for design and operational analysis of a highway is the Highway Capacity Manual (HCM). The traditional weaving methods in the highway capacity manual use road geometry …
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A comparative study of weaving sections in TRANSIMS and Highway Capacity Manual
… same direction along a significant length of the highway without the aid of traffic control devices. The traditional methods used for the design and operational analysis of a highway is the Highway Capacity Manual (HCM). These traditional methods in the manual use road geometry and traffic volumes …
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Traffic measurement and its relationship
… of traffic congestion and evaluation of highway capacity has become an important topic. Highway capacity depends on the operating speed of the traffic and the spacing of vehicles. The purpose of this thesis is two-fold: (a) to find a simple and inexpensive method which can measure both …
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Development of Passenger Car Equivalents for Basic Freeway Segments
Passenger car equivalents (PCEs) are used in highway capacity analysis to convert a mixed vehicle flow into an equivalent passenger car flow. This calculation is relevant to capacity and level of service determination, lane requirements, and determining the effect of traffic on highway operations. …
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Testing for the significance of induced highway travel demand in metropolitan areas
… growth in vehicle travel hypothesizes that highway improvements which add capacity to a specific corridor or regional transportation network will attract increased levels of vehicle traffic. This relationship of highway capacity to travel demand is an important consideration when evaluating …
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Development and Evaluation of a Simulation System Based Upon Standard Pedestrian Thoroughfare Methodologies
… traffic flows. The study incorporates the Highway Capacity Manual 2000 (HCM) (Transportation Research Board, National Research Council [TRB], 2000a) methodologies into a ProModel simulation and then compares and contrasts the results of the HCM calculations with the ProModel simulation.
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Development of a methodology for measuring delay-based passenger car equivalent for heavy vehicles at signalized intersections
… of heavy vehicles, is inappropriate in capacity analysis when delay is considered. Among other analysis procedures, the 1985 Highway Capacity Manual (HCM) and the 1994 HCM were found to be deficient for estimating the effects of heavy vehicles.
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Implementation and evaluation of an asymmetric equilibrium route choice model incorporating intersection-related travel times
… based on the methodologies proposed in the 1985 Highway Capacity Manual and subsequent amendments, and includes most of the intersection configurations that are encountered in practice. Also, a methodology for travel time analysis of urban and suburban arterials is applied to links between …
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Microscopic Simulation Model for Mixed Traffic of Connected Automated Vehicles and Conventional Vehicles on Freeways
… linkage to investigate the sensitivities in highway capacity and travel time. The car-following models for CAVs and MDVs were modified from the full-velocity difference (FVD) car-following model, while the lane-changing logic was adopted to regulate the lane-changing decisions for both CAVs …
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Exploring the Effects of Cooperative Adaptive Cruise Control in Mitigating Traffic Congestion
… on traffic-flow characteristics of a multilane highway system. The research identifies how CACC vehicles affect the dynamics of traffic flow on a road network and demonstrates the potential benefits of reducing traffic congestion due to stop-and-go traffic conditions. An agent-based traffic …
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A Comparative Analysis of Weaving Areas in HCM, TRANSIMS, CORSIM, VISSIM and INTEGRATION
… VISSIM and INTEGRATION and compare them with Highway Capacity Manual, which adopts a traditional methodology for carrying out the operational analysis of a highway system. The statistics collected for the simulation runs include weaving speeds, non-weaving speeds and density of the weaving …
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Evaluating the Operational Performance of St. Augustine U-turn Interchange (SUTI)
… Critical Lane Volume (CLV) analysis using the Highway Capacity Manual (7th Edition), and microsimulation analysis using PTV VISSIM with travel time and maximum queue lengths as the primary measures of effectiveness (MOEs). The simulation is conducted over ten random seeds per scenario to assess …
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Comparison of stopped delay between field measurements and HCM 2010 estimations at actuated signalized intersections
The Highway Capacity Manual 2010 methodology of capacity analysis is widely used for performance evaluation of signalized intersections. However, very few studies have been performed to validate the HCM delay estimation model. This thesis aims to study the accuracy of the HCM 2010 delay estimation …
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Modelling the driver for traffic flow simulation
… it, the model was programmed for two lane rural highway driving and used in simulations of these facilities. Results were compared to field data and the Highway Capacity Manual and proved favourable. The result of the work was a computer based road simulation toolbox containing the new fuzzy …
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Estimating the Effect of Connected and Autonomous vehicles (CAVs) on Capacity and Level of Service at Freeway Merge Segments
The aim of the study was to obtain Capacity adjustment factors and Break points which can be utilized for Highway Capacity Manual (HCM6) methodology in obtaining Level of Service for freeways when Connected and Autonomous Vehicles (CAVs) are present inside the traffic stream. Accordingly, various …
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Signal Control for Partial Cloverleaf Interchanges
… estimations compared with the models in the Highway Capacity Manual 2010.
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Development of a Bicycle Level of Service Methodology for Two-Way Stop-Controlled (TWSC) Intersections
… performance measures for traffic on streets and highways. The Highway Capacity Manual (HCM) published by the Transportation Research Board (TRB) provides Level of Service (LOS) methodologies which enable engineers and planners to evaluate the overall performance of roadways and highways based on …
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Urban transportation systems policy analysis
… traffic strategies, transit management, and highway expansion programs. Certain combinations of these options are also studied. Population distribution and travel time are the two key performance indicators. In so far as people's adaptation to inflating travel cost is not accounted for in the …
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