Suppose my livelihood depends on using my phone while driving (which entails all of the distraction, etc. described, and sometimes results in poor driving on my

Suppose my livelihood depends on using my phone while driving (which entails all of the distraction, etc. described, and sometimes results in poor driving on my part). I wonder how much enforcement would be required before I would stop using my phone while driving (and incur the requisite loss of income). Right now enforcement is at, what, 1/1000 rides (to pick an arbitrary number)? If it was 10/1000 would it influence my behavior? I imagine that 10X or even more enforcement would be required, which may not be practicable.