Can a policeman use a handheld speed gun at night? And when using them do they have to stop you?

I mean do they have to stop you at the road side to show you the read out or do they send you a nip in the post? or:I mean do they have to stop you at

I mean do they have to stop you at the road side to show you the read out or do they send you a nip in the post?

or:I mean do they have to stop you at the road side to show you the read out or do they send you a nip in the post?


or:Policemen use radar guns day and night, because radar is a radio wave and radio waves work all of the time. For example, your FM radio works at night.


or:And if you're speeding, they pull you over


or:Yes they can use a speed gun at night because it uses a laser to track your speed. And they still have to pull you over.

Tags:speed,policeman,