Tag: technical notes

Select link analysis for schemes

Tessa Hayman explains that when appraising schemes, it can be useful to understand how different schemes may interact with each other. This can help you understand any potential synergy between schemes and identify a subset of scenarios to test with fully detailed modelling.

How to get matrix development outputs for UK Department for Transport standards (TAG).

Tessa Hayman explains how you can use the new functionalities in Aimsun Next 23 to create outputs for monitoring changes during matrix development as outlined in the UK’s Transport Appraisal Guidance (TAG).

Creating accessibility maps with Aimsun Next

Marga Delgado explains how to use the Isochrones tool in Aimsun Next to generate accessibility maps for different transportation modes and different criteria as distance or travel time and how accessibility maps can help assess the impact of new roads or transit services.

Using space-time diagrams for calibration

Dimitris Triantafyllos explains how to create speed contour plots in Aimsun Next to show the time, location, and subsequent propagation and dispersal of congestion on the highway.

Low Emission Zones: assessing their environmental impact

Simulation is an invaluable tool for supporting the definition of effective emissions policies. Aimsun helps you compare the effectiveness of different measures and assess related impacts, so you can keep pollution within legal thresholds without compromising on mobility.

Checking Real Data Sets for Consistency

Mohammad Saifuzzaman shows how the Aimsun Real Data Set Checker makes it quicker and easier to create clean datasets and examines some different use cases.

Running a simulation in Aimsun Next connected to SCATSim

Dimitris Triantafyllos explains how to run a micro or meso simulation in Aimsun Next connected to SCATSim, a suite of software modules designed to emulate the SCATS adaptive traffic control system.

My model is in the Atlantic Ocean

“My model is in the Atlantic Ocean!”

Tessa Hayman guides you on how to set the coordinate reference system correctly in your Aimsun Next model.

Automatic model file management

Dimitris Triantafyllos explains how to use the Aimsun Next project folder structure to automatically manage model files.

Side-lane merging in an Aimsun Next mesoscopic model

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.

Reversible lanes and alternating one-way lanes

May, 2022: In transport networks, the available infrastructure may vary through the day. In this technical note we will review how to close lanes temporarily in one direction so that the other direction can use them

MFC and Battery Consumption Model

April 2022: The new Microscopic Free-flow aCceleration (MFC) and Battery Consumption Models allow for a more accurate fuel and energy consumption analysis. This technical note walks you through the details of the models and how each parameter affects the vehicle behavior.

Transit Route Change traffic management action

March 2022: A new feature introduced in Next 22 is the Transit Route Change traffic management action. This technical note will go over how to implement the action and ways in which it could be used.

Importing SCATS traffic signal control data into Aimsun Next

February 2022: The SCATS traffic control system is designed to optimise traffic flow. Dimitris Triantafyllos explains how the SCATS ITS Interface can import data from SCATS ITS into the Aimsun Next network.

Empower the Aimsun Next simulation with Aimsun Advanced Programming Interface (API)

December 2021: The Aimsun Next API is a collection of functions, in Python or C++, that allow users to read information and perform actions during the mesoscopic, microscopic or hybrid mesoscopic-microscopic simulation.

Splitting and Joining Centroids in Aimsun Next

November 2021: Geline Canayon explains a new feature that makes it much easier to adapt zone plans as you develop your model.

C/ACC controller in Aimsun Next

October 2021: In this article, Martin Hartmann explains and demonstrates Aimsun Next microsimulation of vehicles equipped with cooperative adaptive cruise control (CACC).

How to generate throughput and demand outputs

September 2021: In traffic modelling, it can be useful to compare the traffic demand and the throughput along a route: how many people would like to make a journey and how many were able to carry out that journey within a set time frame.

Importing GTFS data into your Aimsun Next network

July 2021: GTFS feeds enable transit or public transport agencies to publish their data, and developers to write applications that use this data in an interoperable way. Dimitris Triantafyllos explores how to import this GTFS data into an Aimsun Next model.

The Aimsun Next Web Map Service (WMS) Importer

June 2021: Geline Canayon guides you through adding a Web Map Service (WMS) or Web Map Tile Service (WMTS) server link to add background aerial images to your model.