I believe that cell phones are dangerous to use while driving because...

Cell phones are dangerous to use while driving because they are a distraction. An example is talking on the phone. When talking on the phone, not all focus is on the road; some of your focus is on the conversation you’re having. This is dangerous because the slightest distraction or lack of attention can cause you to go through a stop sign or red light, and perhaps even cause a car crash.

It you understand the origins