Video: How to use the new path assignment plan in Aimsun Next

Technical Note #47
May 2020

Script – Dimitris Triantafyllos
Production – Victoria Savchenko

Our Senior Product Specialist, Dimitris Triantafyllos, brings you this new pro tip on how the Path Assignment Plan feature gives you unparalleled flexibility in reusing previously calculated paths.


When do I use the path assignment plan?


The Path Assignment Plan is designed to serve three purposes:


  1. You are running multiple macro assignments, for different periods, and you want to use those paths for different periods within a single simulation;
  2. You are running separate DUEs for different time periods, then you want to run a one-shot that spans multiple time periods without having to run and calibrate a single DUE that exactly matches that period;
  3. You run a DUE for a long period, but then you want to run a one-shot for just a portion of that period without having to run and calibrate a single DUE that exactly matches that period.

More technical notes

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June 2022: Aimsun Next has a specific mesoscopic merging behavior model that is controlled by the cooperation gap and merging gap parameters. Mohammad Saifuzzaman explains how to use these parameters to control merging behavior and match observed traffic flow and congestion.

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Cite Aimsun Next

Aimsun Next 24

Aimsun (2024). Aimsun Next 24 User’s Manual, Aimsun Next Version 24.0.0, Barcelona, Spain. Accessed on: April. 16, 2024. [Online].


Aimsun Next 24

@manual {AimsunManual,
title = {Aimsun Next 24 User’s Manual},
author = {Aimsun},
edition = {Aimsun Next 24.0.0},
address = {Barcelona, Spain},
year = {2024. [Online]},
month = {Accessed on: Month, Day, Year},
url = {},

Aimsun Next 24

T1 – Aimsun Next 24 User’s Manual
A1 – Aimsun
ET – Aimsun Next Version 24.0.0
Y1 – 2024
Y2 – Accessed on: Month, Day, Year
CY – Barcelona, Spain
PB – Aimsun
UR – [In software]. Available: