In all of the articles about this topic I have only read one where the actual problem is described.  The new commuter rail in Denver is the first time, ever, that anyone has tried to integrate wireless crossing gate technology with positive train control (which is federally mandated for commuter rail but not light rail).  Perhaps the Denver Post could be more clear in their articles;) LOL

Looks like someone, i.e., DTP, oversold their ability to deliver. Time to terminate their contract?