VisualTraffic assignment software is designed for the "typical" site impact study. We do have customers, however, who use VisualTraffic for large, complex studies as well. If you don't have the time or data to use complex modeling software for your studies, then VisualTraffic might be just the tool you've been looking for.
We think that for most traffic studies; simple is better. Our customers agree, but we've added powerful commands for customers who still prefer to use VisualTraffic on complex assignments.
Our committment is to keep VisualTraffic simple so you can focus on engineering, and powerful so you can avoid - those other programs.