motorway has the following frequency radar,s
K bands (Stalker made guns)
X bands (Stalker made guns)
Laser (Mobile witness USA)
for night VG2 (vector graphics) radar is being introduced and tht,s gonna spoil the fun.
K and X bands are handheld small range guns that cant save any video...they are basically used for warnings but MP is using it for challans also.You can tell the polis to confirm it is ur speed and he wud talk nonsense
Lasers have a Sight (binoculars) and of course a laser pointing device with a target that chks the speed. This system is called as a mobile witness device for official non contestable fines and usually chks the speed of the car in 4 seconds.
Laser jammers have been introduced recently but are expensive and priced at 1000 pounds
for more details
http://www.valentine1.com/laserhowto/
its a bit old info but explains a lot