[mynameisvlad]

Yeah I think it's because most of the laws were written a few years ago, where in-car Bluetooth wasn't common but one-ear headsets were. Lawmakers probably didn't want to outright exclude phone use in the car, and figured having one ear in use was "good enough".

Most modern distraction laws (the ones actually written nowadays) are very thorough. WA just passed one last year where you essentially can't touch your phone while driving. BC has had one for a few years now which includes any non-fixed electronic device while the car is running.