Iowa Public Radio: Truck drivers, bus drivers and other operators of commercial vehicles could be more likely to lose their licenses for texting while driving, under legislation the Iowa Department of Transportation will ask state lawmakers to approve this year. Operators of commercial vehicles in Iowa are already pulled over and fined for texting or operating a hand-held mobile phone, but it’s a general citation for violating federal rules. Iowa law does not spell out a specific cellphone citation for operators of commercial vehicles.