If feasible, this might be handy to those of us with appalling short term memory when strolling randomly around an area gathering. I'm forever forgetting where I've just been and don't always use the map route "GPS" feature if i'm not aiming for anywhere in particular.
I sometimes end up going round in loops of 3 of 4 streets then give up and go to the map and set a location just to escape. A little hint on the road signs would help, maybe?