With an increasing number of states passing laws making cell phone use during driving illegal without a hands-free device, many people are left wondering why. Experts say that talking on the phone reduces the ability to concentrate on driving by 37% for adults and 50% for teenagers. If you aren’t paying attention to the driving task, you are much more likely to be involved in a traffic accident causing damage, injury or even death. The best solution, as recommended by the Insurance Institute for Highway Safety, is to make your calls when you are not driving. If you must make a call while driving, be sure to follow the laws and make driving the priority.