Colorado lawmakers have agreed on a compromise measure to combat distracted driving on roadways, solidifying a ban on the hand-held use of cellphones behind the wheel that is moving toward passage in the final hours of this year’s legislative session. Negotiators faced pressure from law enforcement officials to make sure the ban was enforceable — and from defense attorneys and some lawmakers to include limits so police couldn’t pull over practically anybody. Transportation officials see distracted driving as a rising peril on the road.