The traffic flow model Cell-Transmission Model (CTM) was implemented in Python in various ways.
The vectorized implementation was presented on the 15th International Conference on Ambient Systems, Networks and Technologies, April 23-25, 2024, Hasselt, Belgium (ANT 2024) and afterwards published in: Hauke, R., Kübler, J., Baumann, M., & Vortisch, P. (2024). A Vectorized Formulation of the Cell Transmission Model for Efficient Simulation of Large-Scale Freeway Networks. Procedia Computer Science, 238, 143-150.
A detailed documentation of the repository can be found in Documentation/Documentation.md.
The CTM implementations can be found in the traffic package.
To run a simulation, the corresponding script must be executed as a Python module.
This can be done via the command line, e.g., using the command:
python -m traffic.oo.networkseq oder python -m traffic.vector.vector_full.
or through an IDE.
To execute these files, the required packages must first be installed.
For this, a virtual environment should be created where the packages can be installed.
This can be done via the command line using the command:
python -m venv venv-name.
After activating the virtual environment with the command
venv-name\Scripts\activate.bat or venv-name\Scripts\activate.ps1
the required packages can be installed using the command:
pip install -r requirement.txt .
Example input files can be found in the folder networks.
The file small.yml has a total length of 21 km, medium.yml 187 km, and huge.yml 1500 km.
In the folder benchmark, there is a script named benchmark.py, which can be used to compare the runtimes of the different implementations.