Today I saw a perfect example of why this law was needed. In a parking lot near a grocery store a car ran a stop sign, and almost got t-boned by a much larger mini-van. The car pulled over and stopped while them mini-van continued to honk. The driver of the car was on her phone the entire time, and completely oblivious to what had just happened. She never looked at the mini-van, and never put down her phone.