Rob, you seem to miss the point.
There are no laws specific to:
Leaning over the seat yelling at kids.
Messing with a CD.
Adjusting your volume on the radio.
Putting on makeup.
Petting your dog.
Eating a sandwich.
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There are very effective laws that already cover it. Inattentive driving, careless driving, improper lane change, impeding traffic. Whatever.
Long before you make a law banning cells you should pass a law banning consumption of food or beverage while driving.
When passed some industrious cops will set up a sting in a traffic jamb. One spotter will tell the others of the dozens of people on the phones in the stopped traffic jamb telling people they will be late. Dozens of tickets will be written generating revenue for the city.
Thank goodness! We ran a sting and kept them all safe today.
How bout enforce the laws we have first before we make new ones.
This is a circular conversation with no resolution as noted before.