THESIS
2001
xii, 60 leaves : ill. ; 30 cm
Abstract
An efficient and reliable transportation system is essential to the economy of a nation or region because it provides accessibility and promotes the safe and efficient movement of people and goods. Also, a reliable network plays an important role for the maintenance and repair of other lifeline systems. Thus, it is necessary and important to study the reliability of a road traffic network....[
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An efficient and reliable transportation system is essential to the economy of a nation or region because it provides accessibility and promotes the safe and efficient movement of people and goods. Also, a reliable network plays an important role for the maintenance and repair of other lifeline systems. Thus, it is necessary and important to study the reliability of a road traffic network.
Travel time reliability and capacity reliability are considered to be two useful measures of the performance of a road traffic network. The former is concerned with the probability that a trip between a given origin-destination pair can be made successfully within a specified interval of time for a given level of traffic demand in the network; while the latter is given as the probability that the network can accommodate a certain traffic demand at a required level of service. Determination of both reliabilities requires accounting for drivers' route choice behavior. The first part of the thesis analyses the comprehensive integration of both travel time and capacity reliability and discusses the practical use of this study.
The second part of the thesis provides a day-to-day analysis of the reliability of commuting time and trip scheduling under the Advanced Traveler Information System (ATIS). An analysis of travel cost reliability, which is considered as how likely the road users or commuters will be satisfied with their resultant individual travel costs, is carried out in this part to assess the network performance. A simple network with parallel routes and bottleneck congestion is taken into consideration to simulate the departure time and the route choice decisions of commuters to minimize total travel time and scheduling delay cost. There are two major factors influencing the decisions of drivers in their departure time and route choices: their accumulated travel experience and information provided by ATIS. A simple experiment has been carried out for investigating trip scheduling reliability of this network system.
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