Having the buttons everywhere also provides for future flexibility. Just because a button is ignored now, doesn't mean that it will always be. Special events,

Having the buttons everywhere also provides for future flexibility. Just because a button is ignored now, doesn't mean that it will always be. Special events, changing traffic patterns, or changes to traffic flow optimization strategies may some day necessitate the use of the button. If the button wasn't already there, it would have to be installed, which takes time, money, and planning.