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NTL-FREIGHT-FREIGHT;NTL-FREIGHT-Trucking Industry;NTL-GEOGRAPHIC INFORMATION SYSTEMS-GEOGRAPHIC INFORMATION SYSTEMS;NTL-INTELLIGENT TRANSPORTATION SYSTEMS-INTELLIGENT TRANSPORTATION SYSTEMS;NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow;
Abstract:
Recently there has been renewed interest in modeling urban truck movements.
This is potentially important for improving traffic forecasts as well as for a
host of other applications including ITS. There are unique aspects of urban
freight movements, such as trip chaining, that must be considered for credible
models. Most urban truck trips occur on tours comprised of many vehicle trips
that are chained together for efficient routing. This paper discusses models for
intraurban trips and provides an enhanced framework for modeling urban truck
trips that is workable for most MPOs. This framework can be implemented in
the form of either aggregate or disaggregate models at the zone or establishment
levels, respectively. Various approaches for overcoming data obstacles are
considered including use of truck traffic counts to estimate trip tables.
Use of geographic information systems (GIS) and new data sources is examined,
and practical guidance is provided for model implementation. 13p.
This paper describes how in the past, road construction in Mexico was linked more to sociopolitical concerns than to technical or economic studies to ...
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