DYNAMEQ 23.0.1 Now Available

What's New in DYNAMEQ 2023

May 17, 2023

DYNAMEQ 2023 introduces Connected Autonomous Vehicle (CAV) functionality for the traffic simulator, several class-based options to provide more flexibility and control for the simulation-based matrix adjustment procedure, new scenario creation functionality including importing from Aimsun files and an updated CUBE importer, as well as enhancements to path editing and validation, control plan generation, warm start DTA and traversal matrix calculation. 

DYNAMEQ 23.0.1 provides enhancements and maintenance for the Aimsun import procedure, trajectory export from the vehicle animation window, and API support for simulation-based matrix adjustment.

Highlights are summarized below.

Connected Autonomous Vehicles (CAVs)

CAVs can now be modelled as a new category of vehicle type which includes an additional attribute called Connected Response Time. This attribute defines the minimum headway between a CAV and its leading vehicle when the leading vehicle is another CAV. When the leading vehicle is not a CAV, the minimum headway is the standard response time defined for the CAV vehicle type. The animation image below shows examples of CAVs (in red) platooning with low headways.

Simulation-based matrix adjustment

Simulation-based matrix adjustment now includes several class-based options for controlling the count-based adjustments, and a new feature for adjusting aggregate volume splits across classes. Matrix adjustments can be run from a Python script using the DYNAMEQ API.

Class-based options

  • Traffic counts may represent only a subset of the available vehicle classes.
  • Matrix adjustments may be restricted to a subset of the vehicle classes represented by the traffic counts.

Adjusting aggregate volume splits

  • Time dependent target splits may be specified for a subset of vehicle classes.
  • The subset may include vehicle classes that are not counted and those that are counted but exempt from the count-based adjustments.

Import from Aimsun

A scenario can now be created from a set of files extracted from an Aimsun network. The files provide a detailed description of the network including basic network geometry and connectivity among network elements, detailed lane information, transit data, signal data, vehicle properties and demand matrices. The lane data provides key information that allows the importer to produce a highly detailed copy of the original network.

Imported network showing lane-based class permissions

Import from CUBE

Creating a new scenario from CUBE files has received a major upgrade with the following enhancements:

  • Identification of signalized nodes can be imported by specifying the appropriate user attribute in the CUBE network.
  • Turn prohibitions can be imported by specifying a CUBE turn penalty file.
  • The following optional link attributes have been added:
    • Facility Type — including a user defined lookup table between CUBE and DYNAMEQ facility types.
    • Class Group — a unique identifier that defines the set of permitted classes for each link.
    • Ramp — used to improve ramp alignment at junctions.
  • Discarding shape points from the ends of links can be specified based on the distance from the link ends.
  • Defining vehicle classes and importing trip files is now included.
  • Transit data from CUBE Transit.lin or shapefiles can now be imported.

User paths

Path validation is now included as part of the network validation process.

  • A new command, Repair Path, can be used to automatically reconnect all disjointed sections of a path using a shortest path search.
  • The Edit Path command now supports broken paths and can be used to repair paths which cannot be reconnected using Repair Path command.

Signal plans generator

Several enhancements have been added:

  • Turn volumes can now be used as the input for the signal plans generator.
  • Corridors for coordination are now more conveniently defined using User Paths.
  • Phases can be generated with or without conflicting movements.

Traversal matrices

DYNAMEQ’s traversal matrix calculation now includes an option for controlling how vehicles waiting on virtual links are taken into account by the procedure.

Please refer to the software Release Notes for details on these and other enhancements.

Download DYNAMEQ 23.0.1

DYNAMEQ 23.0.1 is available for download