Use real vehicule count data for traffic simulation

Hi,

My city publishes counting data for both motorized vehicles and bicycles on many roads (less for bikes...).
You can see them by zooming in on both:
* https://geo.brest-metropole.fr/portal/apps/mapviewer/index.html?layers=c42197968f52452da692df690475b18a
* https://geo.brest-metropole.fr/portal/apps/mapviewer/index.html?layers=c8ec1f97a9974e96bf4ef882bad71841

Most of them are "one off" measurements, so some roads have been measured in 2017, others in 2020, etc... I think some (and bikes) are supposed to be more or less real time (I asked, waiting for their answer).

The data at least have:
* Speed (average, 85%ile, for each direction, etc)
* Count (obviously), average, morning peak time count, evening peak time count, trucks vs. cars, day average, night average, and this for both directions
* The actual Geographical segment the measurement has been done on
* Link to a PDF with per hour data: (eg. https://echanges.brest-metropole.fr/VIPDU72/dep/Comptage_vehicules/BR-Moulin_15-avr19.pdf)
* Road width
* ...

Both are also available from the ArcGis API:
* https://geo.brest-metropole.fr/arcgis/rest/services/public/GPB_DEP/MapServer/1717006
* https://geo.brest-metropole.fr/arcgis/rest/services/public/GPB_DEP/MapServer/1710005

Even though I don't think the per-hour is available from the database (I asked, waiting for their answer) and the data is many years old in some locations, it seems like a good idea to use it to simulate the city more accurately. It doesn't seem trivial to implement though but could be a useful long plan goal. At least in France it's common for cities to publish such data (or maybe even mandatory).