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 15 of 15 for “"Vehicle travel time"”.
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Modeling Transit Vehicle Travel Time Components for Use in Transit Applications
… technologies including Connected Automated Vehicles (CAVs), loop detectors, Advanced Traveler Information Systems (ATISs), and Advanced Public Transportation Systems (APTSs) are being deployed. One of the successful techniques that has demonstrated benefits for system users, operators and …
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Developing a new job accessibility measurement based on crowdsourced traffic data and GTFS
… accessibility measurement that captures actual travel impedance by automobile and public transit. To illustrate the refined job accessibility measurement, this study empirically measures auto-based job accessibility and transit-based job accessibility of regions in the Chicago Metropolitan …
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An Assessment Methodology for Emergency Vehicle Traffic Signal Priority Systems
Emergency vehicle traffic signal priority systems allow emergency vehicles such as fire and emergency medical vehicles to request and receive a green traffic signal indication when approaching an intersection. Such systems have been around for a number of years, however, there is little …
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Traffic Adaptive Offset-Based Preemption for Emergency Vehicles
… a new strategy for preemption of emergency vehicles along a corridor, which is route-based and adaptive to real-time traffic conditions. The method uses dynamic offsets which are adjusted using congestion levels to provide uninterrupted preempted green signal for the emergency vehicle …
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Optimization of path based sensor spacing on a freeway segment for travel time prediction during incidents
… of it is non-recurring incidents. Accurate vehicle travel time predictions are needed during these incidents in order for roadway users to make informed trip decisions. Path based sensors are becoming a leading technology in gathering real-time travel time data. The data is used to make …
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Optimization of vehicle routing and scheduling with travel time variability - application in winter road maintenance
… developed a mathematical model for optimizing vehicle routing and scheduling, which can be used to collect travel time information, and also to perform winter road maintenance operations (e.g., salting, plowing). The objective of this research was to minimize the total vehicle travel time to …
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Demand and Capacity Problems in the Next Generation Air Transportation System
… aims to estimate the potential market for Zip Vehicles, an advanced commuter type of aircraft equipped with automation and electric propulsion technologies. A Multinomial Logit Model was developed to estimate the mode choice behavior of commuters between Zip vehicle, auto and transit in seven …
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Evaluation of Travel Time Estimates Derived From Automatic Vehicle Identification Tags in San Antonio, TX
… several aspects of the San Antonio automated vehicle identification (AVI) system, including the reliability and accuracy of the AVI system, travel tag level of market penetration (LMP) trends, and a comparison of aggregated travel time values with probe vehicle travel time values. This thesis …
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Understanding human mobility patterns from digital traces
… by measuring statistics of headway and in-vehicle travel time. The headway analysis helps to identify bottlenecks caused by the road network layout and passenger volumes while the comparison of peak vs. off-peak hour travel speed helps to identify bottlenecks caused by traffic conditions. …
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Design and Performance of Managed Lanes in a Mixed Driver-Operated and Autonomous Vehicle Environment
It is anticipated that as autonomous vehicles (AVs) are gradually adopted, there will be a mixed vehicle fleet containing AVs and driver-operated vehicles. Researchers have suggested using a dedicated lane facility to limit vehicle-to-vehicle interaction since it may affect freeway performance. …
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Assessment of the transfer penalty to transit trips in Downtown Boston : a GIS-based disaggregate modeling approach
… off between making a transfer and extra walking time is explored using a binary logit choice model to review the existence of the transfer penalty, the components inside the penalty, the effects of the urban environment outside the transit system, and the variation of the penalty across trip and …
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The impact of vehicle dispatching on the design of multiple-transporters material handling systems
Although Automated Guided Vehicle Systems (AGVS) have been around for more than thirty years, designing an AGVS is still a difficult process because of the interaction of numerous system decisions. The many important elements and variables that must be considered when designing AGVS include the …
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Regulating Traffic Flow and Speed on Large Networks: Control and Geographical Self Organizing Map (Geo-SOM) Clustering
… growth and limited roadway capacity decrease traveler mobility and increase traffic congestion and fuel consumption. Traffic managers employ various control techniques to mitigate the aforementioned problems. One well-known network-wide control strategy is perimeter control (or gating). …
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The Dynamics of the Impacts of Automated Vehicles: Urban Form, Mode Choice, and Energy Demand Distribution
The commercial deployment of automated vehicles (AVs) is around the corner. With the development of automation technology, automobile and IT companies have started to test automated vehicles. Waymo, an automated driving technology development company, has recently opened the self-driving service to …