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Release Notes

This is a summary of the key changes in subsequent patches for version 24 of the Aimsun Next environment.

24.0.1

Improvements

Microscopic simulation

  • When using the Fast Forward mode in a simulation with animation, the context clock and the active view mode are now updated during the simulation.
  • In the simulation animation, traffic lights are visualized at the end of the section, inside the section, and they have a fixed depth. When simulating bicycles with Non-Lane-Based behavior, they will not stop before the traffic light area but rather on it.

Mesoscopic simulation

  • Cost functions that access Control Plan information now are also available in mesoscopic simulations (previously they were only available for Hybrid Macro-Meso and Simplified Meso).

Pedestrians

Copy and paste

  • Copy and paste of geometrical objects has been improved to make it faster.
  • The option to duplicate meterings is now available and complete.

Bug Fixes

View Modes

GTFS Import

  • In subnetworks, when a Transit Line exits and re-enters the subnetwork, it was not automatically splitted into different lines covering the different segments, now it is.
  • When importing the transit stops of the line, sometimes the same transit stop was assigned to the line more than once. Now this is checked and transit stops are used only once per line.
  • Now it is no longer required to have a calendar.txt file in order to import from calendar_dates.txt.

OSM Import for Roundabouts

  • The number of lanes in roundabouts was not always correct when importing from OSM - now the number of lanes is correct.

Subnetwork Duplicates

  • When duplicating a Subnetwork from the Project window, all its subfolders and objects will also be duplicated.

Data Comparison

  • For variables whose aggregated value (whole simulation interval calculated from individual interval values) is weighted by count, the Data Comparison tool was only calculating the mean value. Now it is also weighted.
  • Comparison of shorter common intervals and their means for results that have different intervals has been corrected.

Mesoscopic simulation

  • Delay Time Meterings defined per lane now are correctly taken into account in mesoscopic simulations.
  • Multiple Delay Time Meterings defined in the same section now are correctly taken into account in mesoscopic simulations.
  • Flow Meterings logic is now correctly taken into account in mesoscopic simulations.

Pedestrians

Static OD adjustment

  • When using Centroid Groupings the calculations where taking too long, now threads are used to speed up the process so that no computation delay is experienced.

Time Series

Initial State

  • Issue solved when trying to store a Initial State during simulation.