Demand/Further Ways to import VISUM Demand Definitions

VISUM stores its demand in OD-matrices which can be imported using OD2TRIPS. Though, it may be interesting for using the computed assignments without performing a dynamic user assignment. The SUMO package contains some scripts which allow to process other VISUM data and are discussed in the following.

=Importing Turn Percentages= VISUM can save the defined/computed turning percentages at junctions. The format differs from turning probabilities format used by JTRROUTER. The script visum_convertTurnPercentages.py converts VISUM turning percentages into JTRROUTERs turning definitions. The tool requires the SUMO-network converted from VISUM, the turning probabilities from VISUM, and the name of the file into which the converted turning probabilities shall be written: visum_convertTurnPercentages.py   

The script is located in /tools/import/visum. It is written in Python.

Usability
It seems as using turning ratios for large areas would not make any sense. The resulting routes are very unrealistic as they contain many loops.

Usability
The routes can be directly used within SUMO / SUMO-GUI.