Is this a camera of some sort?

UK PROFESSIONAL DRIVERS FORUMS THE UK PROFESSIONAL DRIVERS FORUM (INTERACTIVE)
1

See these occassionally and never know what they are…

Screenshot_20181031-084756_Maps.jpg
Screenshot_20181031-084756_Maps.jpg540×960 104 KB

2

Think they monitor traffic flows.

3

When your satnav warns you of slow traffic ahead it’s these that send signals to the satellite, trafficmaster or inrix

4

Are you sure it’s not a Triffid?

5

Wheel Nut:
When your satnav warns you of slow traffic ahead it’s these that send signals to the satellite, trafficmaster or inrix

^^^^^^this