The NTSB doesn’t regulate transportation; it only makes recommendations about how to improve safety. By design, the NTSB doesn’t worry about how much reforms or new rules will cost, or how much inconvenience they will cause. That’s up to other agencies—federal, state or local—that have to decide whether recommended safety reforms are practical or not. Sometimes they’re not. By calling for a cell-phone ban, the NTSB is raising awareness of a new problem that most people aren’t aware of, including phone-addicted teenage drivers and their parents.