I know a bit about this stuff for once!!!
The RAC trackstar is a private sattelite gps location system and is not big brotherised unless you want it to be i.e. company fleet etc.
The Tracker Tracker is the one the police cars use the arrowed signal meter for also in helicopters.
The blue and green double cameras at the side of the road and on motorway bridges are for Trafficmaster alert systems.
The SPECS ones take your average speed
The white sqaures on the road are for VASCAR the video speed machiney thing!!
Worry more about the mobile phone in your pocket mate and the satellites above your head
here
http://www.followus.co.uk/index.html mobile scary
http://earth.google.com/ wicked program
Big Brother is always watching

George Orwell was so right 1984 read that book!