 The new rule allows commercial vehicles to idle for the purposes of using your heating or air conditioning system when a driver is resting. Another provision permits vehicle idling when parked for purposes of refrigerating perishable commodities. The Fox News Rundown, weekday mornings, 5 until 6 a.m. On the talk of the town, 97.7 FM and 1570 a.m. Idaho Trucking Association supporting the new change.