FSUTMS Comprehensive Modeling Workshop - Cambridge ...

Overview
► The Trip Distribution model is the process by which trips
originating in one zone are distributed to the other zones
in the study area.
► Trip distribution models generally link trip origins with trip
destinations based on measures of accessibility and
relative levels of activity at each destination zone.
► Trip distribution is the third step in the model chain. The
Florida standard model typically builds a seven-purpose
trip table
► The trip table contains the number of person-trips
between each pair of traffic analysis zones (a number of
models use different trip purpose stratifications).
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Overview (Cont.)
► Trip Distribution requires as input files the highway skims
produced by the Network/Path models, the productions
and attractions produced by the Generation module, and
a set of friction factors.
► The free-flow flow skims were revised, or “updated” to include
intrazonal and terminal times prior to being input to
Distribution:
Terminal Terminal time refers to the walk time required to travel
from trip origin to auto and from auto to final destination.
Intrazonal time is an estimate of the time required to
travel within a given traffic zone when the trip origin and
the trip destination are both in the same zone.
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