IntelliDrive at 4.9GHz for Transit ITS - pathway to DSRC

IntelliDrive is generally associated with the 5.9 GHz Dedicated Short Range Communications ("DSRC") spectrum for wireless connectivity. King County Transit deployed its ITS Architecture using the 4.9GHz Public Safety band to extend the King County enterprise network. Does this ‘hybridization’ conflict with the US DOT vision? There are many benefits to this architecture, including a  transition path to DSRC.