It's a thing about buses.

Python 3.6 or newer is required. Use Pipenv to install the Python dependencies (Django, etc):

pipenv --python 3.6
pipenv install --dev

There are also some JavaScript dependencies:

npm install

import.sh will download data from various sources and run the necessary Django management commands to import it. When run repeatedly, it will only download and import the stuff that's changed. It expects to be run from the data directory. It needs a username and password for the Traveline National Dataset step.

Some "live" data – departure times at stops, and vehicle locations – is/are fetched as and when a user accesses a page.

For the rest, there are some Django management commands that need to be run indefinitely in the background. These update the big map of bus locations, etc.