Why Do Pedestrians Have to Press ““Beg Buttons” to Cross the Street?

We were all taught how to cross a street: Look both ways. But, in some cities, you'll also have to ask permission by pressing a tiny button and waiting your turn. Those little buttons on walk signals have been nicknamed "beg buttons"—because walkers are pretty much begging to be able to cross. » 2/04/14 11:20am 2/04/14 11:20am