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 7 of 7 for “"Travel time variability"”.
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The cost of bus travel time variability
… of reliability is a low level of day-to-day travel time variability (TTV). To obtain funds for reducing TTV, it is necessary to give evidence for the benefits from such improvement, but current tools for estimating the cost of TTV are insufficient. This thesis covers issues that arise when …
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Optimization of vehicle routing and scheduling with travel time variability - application in winter road maintenance
… 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 complete a given set of service tasks, subject to resource …
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A framework for measuring passenger-experienced transit reliability using automated data
… passenger-experienced reliability based on total travel time variability is developed, and the key differences from "operational" reliability identified. This model is applied to identify public transport management functions which should be targeted as a result of passenger-experienced …
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Dynamic Ridesharing under Travel Time Uncertainty: Passenger Preference and Optimal Assignment Methods
… their resulting increase in vehicle-kilometers traveled. Dynamic ridesharing (DRS; or pooled ridehailing) provides a means to mitigate these negative externalities by offering reduced fares for passengers in exchange for increased operational flexibility in pooling multiple trips into the same …
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A Discrete Optimization Approach to Solve a Reader Location Problem for Estimating Travel Times
… need to be identified, and responded to in a timely fashion in order to keep traffic moving safely and efficiently. One of the main areas of transportation research that remains of contemporary interest is the study of travel times. Travel time information technologies, until very recently, …
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A Framework and Analytical Methods for Evaluation of Preferential Treatment for Emergency and Transit Vehicles at Signalized Intersections
… emergency vehicle crash potential and response times. Transit priority employs the same technologies with signal control strategies seeking to reduce travel time and travel time variability. Where both preemption and transit technologies are deployed, operational strategies deconflict …
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Optimization of headway, stops, and time points considering stochastic bus arrivals
… users. Unreliable service will cause extra wait time to passengers because of headway irregularity at stops, as well as extra recovery time built into schedule and additional cost to operators because of ineffective utilization of allocated resources. This study aims to optimize service planning …