Before you fire up the GPS on your smartphone while driving, think twice. A California court has ruled that checking maps on a phone while driving is a violation of the state’s distracted driving law, just like texting. The law states that only hands-free use of mobile phones while driving is permitted. The driver lost his appeal. Similar cases are likely to be adjudicated in other states, as well. A good solution may be to start the navigation before you begin driving. Stay tuned for new developments.