We all know that the Highway Code is somewhat dated in many respects, but, a general question on the law.. If a driver is fiddling with his/her mobile whilst sat in traffic, or parked, with the engine running, they are guilty of an offence. Obvious. What if the driver used the defence, if caught, that with Stop/Start, the engine is switched off, ie: not running, therefore, it would be legal to use/fiddle with a mobile phone? No specific reason for the question, but just a thought that popped into my ageing brain, as I was driving such a vehicle recently (and not fiddling with my mobile!!) In case there's folk who doesn't know what Stop/Start is, it's when the car stops, so does the engine. Once the accelerator is used, the engine restarts and off you go.