Computer User Manual for Program LATM

Computer User Manual for Program LATM

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The package produces short duration traffic assignments for small area networks representing part of an urban area. It can be used for the evaluation of alternative traffic systems management schemes, studies of traffic generators such as shopping centres, or studies of congestion and network performance. The package uses externally supplied, dynamic travel demands over a specified time interval (e.g. a peak hour) which is itself divided into a number of computation sub-intervals. Network travel conditions are also varied between sub-intervals. It is possible to distinguish between different turning manoeuvres at intersections, between intersection types, and between road and street types. Queues may exist on all intersection approaches. The model uses a probabilistic path choice procedure based on perceived travel times to account for the possible multiplicity of available network paths of comparable travel time and the assumed multiplicity of available imperfect knowledge of the network by travellers. No limits on network size, number of computation sub-intervals or internal length are set in the program. However, the queueing capacity and delay sub-models in the package are not appropriate for sub-intervals of less than 5 minutes. A non-consistent set of metric units is used. The model has flexibility to be used at varying degrees of detail of the network description.The package produces short duration traffic assignments for small area networks representing part of an urban area.


Title:Computer User Manual for Program LATM
Author: Michael A. P. Taylor, Commonwealth Scientific and Industrial Research Organization (Australia). Division of Building Research
Publisher: - 1982
ISBN-13:

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