We are luck here in not having to use the smart motorways. The only time we have encountered them is when we travel south to Cornwall and even then we try to avoid the sections on the M6 and M5 that utilise the system at busy times. The sections around Birmingham on the M6 are deadly. The danger, in my opinion is that when the system is operative there are drivers who are used to the opportunity to use the hard shoulder, and who do so at breakneck speed and switch lanes every few minutes trying to gain a few yards advantage. They know where junctions are and are not usually looking for exit junctions, whether to take them or to avoid them. The drivers who may not encounter them regularly can be stressed and distracted by the sudden change in circumstances and either panic or get in a dither. I am lucky in that, whilst not enjoying using them , I do, if I encounter them, get by just fine if not dandy. The M6 parts are unbelievable the first time you hit them the M5 parts are somehow not to disturbing. There has got to be a better way.