This repository pulls data from the National Highways WebTRIS API.
Currently, National Highways directly monitor the speed and flow of roads using on road sensors which fall into the following categories:
- MIDAS sites (Motorway Incident Detection and Automatic Signalling) which are predominantly inductive loops.
- TMU sites (Traffic Monitoring Units) which are inductive loops.
- TAME sites (Traffic Appraisal, Modelling and Economics) which are inductive loops.
- TRADS Legacy sites.