Sagalout

You have to wait until the vehicle in front has moved far enough away before the ACC will restart automatically. So if you have the ACC set at max distance you will find that the distance required is too much to avoid the inevitable 'beep beep wake up mate' from the vehicle behind you. Set to minimum it does work but there is a that lag which you have to get used to waiting for.
 
That's my expereince from trying to use it. I don't bother to use it much in that way anymore. Maybe on one of those stop/start motorway queues that go on for ages and people are not pushing you to move off but not in urban traffic.