No-one's suggested that they be switched off, merely that the fines be frozen until such time as machines can be shown to accurately reflect the speed of a motorcycle. At the moment, the evidentiary standard being applied to motorcyclists appears to be on a par with "...so if she weighs the same as a duck...SHE'S A WITCH!". It's evident that there is only one source of evidence being accepted, and that that source is hopelessly flawed. It is simply an offence against both justice and common sense to convict and fine people on the basis of that evidence.