Not sure if it is true as I never bothered checking but on a rally years ago we were given a very gentle caution by one of Her Majesty's Constabulary that using an Intercom (a full blown Sonic set up) was illegal on the road? As I say it was more advice than a warning so I never took a lot of notice, also I don't see how they can be as what about hands free car phone kits that have earpieces....OK I realise that not everything available for sale is legal but does anyone know what the law is?
