VISSIM 5.30-05 User Manual

Assignment Control
on the same link (tolerance ± 1m) these destination cross-sections are
regarded as if they were a single destination cross-section.
If the number of routes per destination cross-section > current max.
number of routes, then the routes with lowest volume totals calculated
from all volumes per time interval will be removed.
If an unlikely value is entered, e.g. 999999, then none of the generated
static routes will be discarded for this criterion.
12.8.6 Summary of the Dynamic Assignment Parameters
The Dynamic Assignment window is accessed by TRAFFIC – DYNAMIC
ASSIGNMENT. In this section only a short summary of the available options is
presented. A more detailed description of most of the parameters is
contained in the relevant sections above.
● TRIP CHAIN FILE: Links to a
trip chain file (e.g. exported
from VISEM).
● Matrices: Contains a link
to one or more matrix files
each related to a vehicle
composition.
● COST FILE: The file that
contains the estimated travel
times for the edges of the
abstract network graph.
● PATH FILE: The file that
contains the route archive of
the network
● Check Edges: When
active, VISSIM checks the
consistency of the cost resp.
path file in terms of network
changes. It is strongly recommended
to leave this option
enabled since otherwise
results of the Dynamic
Assignment may be inconsistent.
For large networks
the Check Edges process
may take some time. In this
case it may be switched off if
it is assured that no changes
have been done to the
network structure.
User Manual © PTV AG 2011 645