[Weirdosport]

pawn Код:

public OnPlayerExitVehicle(playerid, vehicleid)
{
new temp = GetVehicleModel(vehicleid);
if(temp >=505 && <=510)
 {
 DisablePlayerCheckpoint(playerid);
 }
}

Very basic, but I think it'll do what you're after.. unless i've misunderstood.

I don't guarantee this is 100% correct, I didn't test it with pawn, I scripted it on here..