Is there a law in Arizona that prohibits drivers from using their cell phones while they drive? If not, there certainly should be.
Case in point, a driver on I-40 was in the left-hand lane in front of an 18-wheeler, going slower then normal. He started speeding up, and then suddenly slowed down. The 18-wheeler tried to pass, but couldn't because of traffic in the left lane. As I passed both vehicles, the driver of the car was on her cellphone, oblivious to the fact there was an 18-wheeler bearing down on her. It was an accident waiting to happen!
Another time, I was passing an 18-wheeler on the I-40 that was swerving badly, and as I passed him, I looked up and he was texting! He used his wrists on top of his steering wheel to try and keep the truck steady.
Yes, we do need laws prohibiting cellphone use before someone becomes a statistic of a tragic accident.