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TRANSCAD教程6:DEMAND FORECASTING: TRAFFIC ASSIGNMENT

更新时间:2007-8-27  来源:tranbbs  作者:佚名  人气:  [ 投稿 ] [投稿帮助
  Task 5. DEMAND FORECASTING: TRAFFIC ASSIGNMENT

5.1 External Station Trip Interchanges

All demand analysis completed thus far has pertained to the internal zones (TAZs) only. The Miasma Beach network contains two external zones (zones 7 and 8) which serve as control points for interaction across the study boundary. The modeling of external trips (trips crossing this boundary) has been completed based on O/D and Cordon Surveys; the results indicate a significant number of trips between the external stations and also significant interactions across the boundary to and from selected internal zones. These trips, identified in Table 8, correspond to total 1-hour PM-Peak vehicle trips in O/D format.

Add External Station Trip Interchanges

Open OD Matrix (o-dfinal.mtx). Add the external trips (see Table 8) to your O-D matrix. Report the final O-D matrix.

Table 8. 2004 External Station Origin/Destination Matrix*

-----------------------------------------------------------------

 ORIG\DEST    1      2      3      4      5      6      7      8

-----------------------------------------------------------------

     1        0      0      0      0      0      0     50    100

     2        0      0      0      0      0      0     50    100

     3        0      0      0      0      0      0     50     50

     4        0      0      0      0      0      0    100    200

     5        0      0      0      0      0      0     50     50

     6        0      0      0      0      0      0    100      0

     7        0      0     50      0     50    100      0   1400

     8       50     50      0      0      0      0   1500      0

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 * For 1-hour PM peak period (combined purposes)


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