so theres an ongoing debate on wether a cop has to clock or pace you in order to pull you over and give you a speeding ticket or not. is there a law or code or something if there is can you post it up.

my argument is
how is there a case if he didnt clock you or doesnt have any scientific evidence saying you were going that speed. he cant just say oh think you were doin 115 then give you a ticket. it doesnt work like that

his argument is
Assuming you didnt do anything stupid like say "Well I know I was speeding but I wasnt going 80" the cop would still be able to say he was able to gauge your speed from sight. They are trained to do that, but the allowances for the speed is greater. If your ticket was for 5-10 over it would probably be dismissed, but if it was 50 over, you would probably get a ticket still (albeit for a lesser fine).