Video: How to use View Modes to calibrate vehicle behavior in Aimsun Next

Technical Note #39

September 2019

Script – Martin Hartmann
Production – Victoria Savchenko
Voice – Molly Malcolm

A short video by Martin Hartmann on how to use View Modes in the capacity calibration process to model bottlenecks more realistically.

 

• Use View Modes in the capacity calibration process to model bottlenecks more realistically.

 

• This highway scenario models a 3 to 2 lane reduction.

 

• For a better overview, use the Polyline and Text tools to sketch the distances upstream from the bottleneck.

 

• Next, label the upstream sections.

 

• Visualize accelerations greater or less than 1 m/s2 to identify
major accelerations upstream from the bottleneck.

 

• To visualize longitudinal behavior, right-click on View Modes and create a new mode called CALIBRATION: Merging.

 

• Add new View Styles: Acceleration (Color) and Acceleration (Attribute).

 

• For a better overview put the most important parameters in a Text box.

 

• Turn on the View Mode and study the driving behavior under various traffic flow regimes.

 

• Visualize the total number of lane changes upstream from the bottleneck.

 

• Add a section Dynamic Attribute ‘Total Number of Lane Changes’ represented by ‘Color’,

 

• Add a condition to limit the View Mode to the sections upstream of the bottleneck.

 

• Use the same technique to add ‘Color opacity’ and ‘Attribute’ View Styles to the View Mode.

 

• Switch between the statistical intervals to compare outputs.

 

• Add Real Data Sets and follow the national guidelines to validate the simulated bottleneck capacities.

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Cite Aimsun Next

Aimsun Next 24

Aimsun (2024). Aimsun Next 24 User’s Manual, Aimsun Next Version 24.0.0, Barcelona, Spain. Accessed on: April. 16, 2024. [Online].

Available: https://docs.aimsun.com/next/24.0.0/

Aimsun Next 24

@manual {AimsunManual,
title = {Aimsun Next 24 User’s Manual},
author = {Aimsun},
edition = {Aimsun Next 24.0.0},
address = {Barcelona, Spain},
year = {2024. [Online]},
month = {Accessed on: Month, Day, Year},
url = {https://docs.aimsun.com/next/24.0.0},
}​​​​​​​​​​​​​​​

Aimsun Next 24

TY – COMP
T1 – Aimsun Next 24 User’s Manual
A1 – Aimsun
ET – Aimsun Next Version 24.0.0
Y1 – 2024
Y2 – Accessed on: Month, Day, Year
CY – Barcelona, Spain
PB – Aimsun
UR – [In software]. Available:
https://docs.aimsun.com/next/24.0.0/