For minor changes including bug fixes, please submit a pull request (like this good example). If you want a major change, please start a discussion on the Issues or Discussions pages first.
To be merged, your code must pass test scripts that are automatically run by the Github Action. But feel free to send pull requests that fail the tests. The other people may be able to help.
uxsim.py is the core of the traffic flow simulation.
It must contain codes that are essential for simulation only.
If you have developed useful utilities, please consider to add them as a submodule like the current Utilities.