my friend car also has roadtax expired and got stopped by police.

the police just give summon for expired roadtax + no insurance..

the next day go to counter to pay, the fine was rm600 (rm300 for expired roadtax & rm300 for no insurance)..but lucky just got to paid rm300 after got discount (just fined on expired roadtax)...

but in your case was stopped by jpj...