Concepts

This section explains the modeling concepts behind Pymetropolis and METROPOLIS2 — the ideas and terminology used throughout the rest of the book, independently of any specific Step or Parameter.

• Glossary: definitions of terms specific to Pymetropolis.
• Zones: the hierarchical zone levels used for origin-destination matrices and results.
• Modes: the travel modes available in Pymetropolis.
• Departure time: departure-time choice models.
• Simulation convergence: how to assess and improve simulation convergence.
• Modeling congestion: bottlenecks, spillback, and speed-density functions.
• Multiple-demand: simulating several independent demand populations together.
• Custom Steps: defining your own Steps in a local Python file, and overriding built-in Steps with them.