How Fast-Trips Works

Dynamic Passenger Assignment(DPA) Algorithms

Fast-Trips is based on the work of Alireza Khani, Mark Hickman, and others while at University of Arizona. Associated academic papers include:

• Models and solution algorithms for transit and intermodal passenger assignment (development of FAST-TrIPs model)
• Hyperpaths in networks based on transit schedules

Some other useful resources include:

• Teaching Materials (currently in draft form) for the Fast-Trips algorithm.
• Term Glossary (currently being developed collaboratively)

System Design

One of the best ways to understand what is happening internally in Fast-Trips is to trace a single passenger through a simulation. This can be done by using the run_trace.py script found in the /scripts directory.

You can also review the following code flow chart (which is a work in progress)