|
|
|
Title: MACROANALYSIS FOR TRANSIT INTEGRATION. ABRIDGMENT
Accession Number: 00301610
Record Type: Component
Availability: Find a library where document is available Abstract: To investigate enough integration options to have some hope of finding a good solution, it is necessary to examine 20 or more alternatives. Even so modest a number of investigations is beyond reason if one is compelled to use the traditional network-based algorithms. The macroanalytic regionwide transportation (SMART) model of SYSTAN, Inc., has been specifically designed to explore large numbers of public transit alternatives. This model can provide the first coarse screen by which the number of transit options is reduced to manageable proportions. The model seeks breadth at the expense of detail. It does not take the place of more complex procedures but helps to focus the use of complex models on a small set of highly attractive alternatives. The SMART Model represents urban travel at three different levels: (a) local, (b) door to door, and (c) regionwide. Local transportation is concerned with trips that take place wholly within a local module and with those portions of longer trips that occur within the local module. Local transportation is studied for two types of modules: (a) residential and (b) major activity center. Residential and major activity center modules are connected by line-haul corridors that handle all interzonal traffic within an urban region. Line-haul corridors give form to the urban region. Line-haul corridors give form to the urban structure by establishing connecting routes between the different modules. Line-haul corridors are given a circular representation: Corridors are either radial or circumferential or they emanate from the CBD. Line-haul corridors do not originate or terminate traffic; they handle traffic that originates and terminates in residential or major activity center modules. Door-to-door trips cross module boundaries. A trip may originate in a residential module where it includes a local movement from a residential origin to an access point of a line-haul corridor. The trip continues on one or more line-haul corridors to the egress point nearest the destination. A local movement is then made from the egress point to the destination. A traveler can use a single mode between origin and destination, or modes can be changed at access or egress points of line-haul corridors or at transfer points between line-haul corridors. Door-to-door analysis takes the viewpoint of the traveler and traces the route from origin to destination, accounting for mode changes when they occur and the delays associated with them. The SMART model accumulates regionwide data and prints regionwide summaries. /Author/
Supplemental Notes: Publication of this paper sponsored by Committee on Transportation Systems Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 01411054
Authors: Jones, Paul SLucas, Gerard RPagination: pp 30-33
Publication Date: 1979
Serial: Conference:
58th Annual Meeting of the Transportation Research Board
Location:
Washington District of Columbia, United States ISBN: 0309029538
Media Type: Print
Features: Figures
(3)
; References
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Planning and Forecasting; Public Transportation
Files: TRIS, TRB
Created Date: Nov 27 1981 12:00AM
More Articles from this Serial Issue:
|
