take a wagon or stroller with you so they can walk part way. I find they either love this sense of independence and don't want to go back in the wagon or they walk a few steps and wail for a ride. Just depends on the personality of the child. If I have a few little ones, I do put them back in my wagon to cross the street. The independent kids soon learn this is non negotiable and as soon as it is safe they can resume walking.