Common Analytical Framework (CAF) Distribute

What is it?
CAF.distribute is a modelling tool within the Common Analytical Framework that helps distribute transport demand into matrices. It uses standard methods, including gravity models and iterative proportional fitting, to convert high‑level demand data into detailed origin‑destination matrices. The tool is open‑source and built in Python, with support for single and multi‑area calibration.

How is it useful?
CAF.distribute helps transport planners and modellers produce consistent, robust demand matrices for modelling and appraisal. By using shared, tested methods, it improves the reliability of analysis, reduces duplication of effort and supports clear evidence for local decision‑making, investment planning and funding business cases.

• User guide