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New Features in Aimsun Next 24

This chapter summarizes the main new features in Aimsun Next 24

Aimsun Next 24: Highlights

The most significant additions to Aimsun Next 24 include the following:

  1. The Bi-Criteria static assignment method to take into account a log-normal distribution for the Value of Time per user class has been added
  2. A new Pedestrian Crossing output called Pedestrian Maximum Waiting Time has been added
  3. A new Pedestrian Transit Stop output called Pedestrian Maximum Waiting Count has been added
  4. Coordinated control plans with two rings now distinguish 3 Offset's Reference Points
  5. LISA controller server data directory is now defined as a Project Preference
  6. An Update AP Values button has been added to OCIT controllers
  7. Yutraffic controller now distinguishes between parallel reporting impulse and presence detectors
  8. Crowding Discomfort function has now access to delay time
  9. File paths in the project folder are now stored as relative paths
  10. A section object position on a section can now be specified with a distance value
  11. Added Initial, Dynamic and K-Initials Cost Functions to Road Type

Static Assignment

  • A new option in Static Assignments has been added: Bi-Criteria assignment takes into account a log-normal distribution for the Value of Time for each user class.

Dynamic simulators

  • A new Pedestrian Crossing output has been added: Pedestrian Maximum Waiting Time: Maximum calculated time pedestrians are waiting at the Pedestrian Crossing (in seconds) for the pedestrian traffic light to become green.

  • A new Transit Stop output on pedestrians has been added: Pedestrian Maximum Waiting Count: Maximum number of pedestrians that have been concurrently waiting for a bus at the stop in each time interval.

Control Plan

  • A new setting called Offset's Reference Point has been added to the coordinated 2-ring control plans, substituting the previous option Match Offset with End or Beginning of Phase (which was defined at the phase level). The options are Beginning of First Coordinated Phase, Beginning of Last Coordinated Phase, and End of First Coordinated Phase.

OCIT controllers

  • LISA controller server data directory is now available at the Project Preferences editor. All LISA emulators used in a project must be stored in the same folder.

  • A new button is available to Update AP Values in the OCIT Views Configuration tab folder in the controller.

  • Yutraffic and LISA controllers now distinguish two types of parallel reporting detectors: presence or impulse.

Static Transit Assignment

  • Crowding Discomfort functions now have a fourth argument, delay time, so that the penalty for crowding depends both on how crowded the transit segment is but also on how long it takes to go through it.

Road Type

  • In Road Type editor > Dynamic Models tab > Turn Parameters tab, Initial, Dynamic and K-Initials Cost Functions can be configured.

Project Folder Structure

  • Paths for external files that are in the same folder as the project or in any subfolder will be now stored as relative paths.

User Interface

Previous Fast Track Features

Aimsun Next 24 also includes the following improvements that were released as Fast Track features in previous releases of Aimsun Next 23:

  1. A new option for Queue Jump Gridlock Prevention in the Mesoscopic Network Checker
  2. A Node filter to highlight control plans that apply to that node in a Master Control Plan

Mesoscopic Network Checker

  • Queue Jump Gridlock Prevention is a new option in the Mesoscopic Network Checker, that will look for vehicles stuck in a queue waiting for a non-congested turn behind vehicles that wait for a congested turn and let them, after some time, jump the queue.
  • A Node filter has been added to the Master Control Plan editor, so that it is easier to identify which control plans apply to a specific node.