VISSIM 5.30-05 User Manual

6 The Traffic Network
Route volumes in a path file resulting from ANM Import do not necessarily
be integers, since the assignment result may have floating point values in
VISUM.
During the export, the DTA route volumes are stored as volumes per ANM
time interval in the path file. During the import, the volume values are
converted into volume data per evaluation interval of the Dynamic
assignment.
For Dynamic Assignment, these values are rounded by random in VISSIM
(according to the share to be rounded). Example: 0.3 is rounded up to 1
with 30% probability and down to 0 with 70% probability. Random rounding
causes the total of the values in the matrix to remain approximately
constant.
► For static routing :
- Inputs and routing decisions with static routes are created.
- Each routing decision for static routes is assigned a name containing
the ANM origin zone number.
- The IDs of the ANM routes serve as route numbers of static routing
decisions. This way, any route can be found in the ANMROUTES file
and the respective OD pair can be determined.
Since VISSIM 5.00-05 also data files exported by SITRAFFIC OFFICE can
be imported.
During ANM Import, warnings and messages are displayed in the protocol
window, cf. section 10.2.1.
Starting the (initial) ANM Import
Call FILE – IMPORT… - ANM to open the ANM Import window.
168 VISSIM 5.30-05 © PTV AG 2011