[msl]

No, the worst outcome is much worse than that. You need to keep track of what is going on around, or you won't be able to account for you surroundings when you start moving again. I see these failures all the time: a driver of a stopped car is distracted, then realizes that the lights have turned green (or, even more commonly in these types of situations, a space has opened for them to merge into or pass through) and they "have" to get moving, now. Now they are in a hurry, and obviously can't afford to take a moment to take a careful stock of everything going on around them, so inevitably, they end up missing something. Usually someone else (such as myself, pushing a stroller) will be able to react in time and an accident is avoided, but it should not go like that. If you can't or aren't willing to attend to traffic, get out of it.