OK, ban hands free devices !

What about single manned police cars driving along the road and hearing a shout for nearby, they cannot answer it nor if they are chasing a vehicle would they then be able to give directions to where they are or heading, the same with maybe a first responder getting an emergency shout, they would need to stop, inform headquarters they were responding then move off again.

An unlikely scenario but all these bans people shout about need to be thought out properly before everyone jumps on the bandwagon to get them implemented.