[meaty]

Bad idea. If you have to stare at that going round a corner you are going to end up stuck in the back of a bus.

[aidos]

"When you’re on foot just stepping off the bus at a crowded intersection..."

I think you missed the point. It's not an aide to use while you're following the directions (like a TomTom). It's there so you know which way to walk at the start of your journey.