If anyone with a bit of tech know-how wants to set up a Twitter bot to monitor average speed over a set location, you can follow the instructions here:
https://github.com/BerkshireCar/SpeederBot
An example here:
https://twitter.com/Holyrood_park/status/1428027787613556737
18-08-2021 17:14 PM a vehicle was detected apparently traveling at a free flow speed of 27.33 MPH on Queens Drive in Hollyrood Park towards Edinburgh. #SpeederBot #SaferRoads #HolyroodCarFree #RoadSafety #Speeding