Research says that upwards of 20% of car accidents are related to cell phone use. Roughly a million automobile accidents a year could be avoided if we eliminated the cellphone while driving. Studies also suggest that texting while driving can make a car crash 23 times more likely than those who are completely focused on driving.
Although there are many laws that prohibit texting while driving, many people ignore them and continue to text while driving despite the potential harm of themselves and others. This is similar to how many will still drink and drive even though it is both illegal and incredibly dangerous.