Not only is it one of the biggest dangers, it's also the most talked about danger. Whether you're watching a campaign against the scourge on television, walking past the poster in the school hallway, or even looking at the ad on your cell phone, the warnings are everywhere you go. Even after all the different advertisements and posters, at any given time, over a million American drivers are using their cell phones. But is using your cell phone while driving really that dangerous (Keisbye 9)? The answer is yes. Cell phone users are four times more likely to have an accident serious enough to injure them than drivers who do not use their cell phone at all, or who use it with a hands-free device.