Released on Friday 15 February 2019, the first public beta version of Aimsun Next 8.4 mobility modeling software is now available for testing: we hope you enjoy the great new features!
A list of highlights follows. For a complete list of new features, go to What’s New in Aimsun Next.
Highlights of Aimsun Next 8.4:
New CAV modeling enhancements include:
The list of new features is not limited to CAV applications, and includes:
Further details on all of these new features below.
You can now adjust all of the most significant behavioral parameters at vehicle type level, meaning that you can define vehicles that behave more or less conservatively in terms of lane-changing and gap-acceptance, not just car-following.
To take an example, you can now define an AV that:
If you want the AV to be driven by a different controller, you can plug an external vehicle control logic into the microscopic simulation using the External Agent Interface (licensed separately). The External Agent Interface sends via TCP/IP every simulation step, the position of the vehicles and the state of the traffic signals, and receives the updated position of the externally controlled vehicle. This extends the existing options of using API or microSDK.
If you have developed the vehicle control logic in SCANeR, or you want to drive a vehicle in the microscopic simulation, we have completely redesigned the interface with this driving simulation software (requires a separate license).
For testing connected vehicle applications, we are releasing a technical preview of the V2X Software Development Kit (this requires a separate license).
With the V2XSDK you can create communication channels at the level of vehicle, road side unit and traffic management center; during the microscopic simulation, Aimsun Next takes care of generating and dispatching CAM messages to the appropriate recipients, taking into account transmission range, packet drop probability and latency. You only have to implement the actions taken by the vehicle, road side unit, or traffic management center based on the information they receive, for example, adapting the speed of the vehicle, controlling a traffic signal, or providing route guidance. This extends the existing option of using the API, giving a more detailed representation of the communication process.
Users of those controllers can export the geometry of the intersection along with the signal programs and the controller emulator from Sitraffic Office, and have a simulation running in Aimsun Next – all at the click of a button.
Sitraffic Office is a modular software suite from Siemens AG, which provides tools for traffic management based on a shared database of network assets and traffic data. Sitraffic Office provides workflow tools for integrated junction design, route planning, and network management and also integrates tools for dynamic signal actuation and co-ordinated signal control across junctions.