The California state legislature enacted 807 new laws during the 2015 legislative session.
California law previously prohibited wearing any headset that covered both ears while driving a vehicle or riding on a bicycle. This year, law CA Vehicle Code Section 27400 was amended to, essentially, ban ear buds while driving or riding a bicycle.
With certain exceptions (such as persons operating authorized emergency vehicles and individuals wearing hearing aids), the law now provides:
“A person operating a motor vehicle or bicycle may not wear a headset covering, earplugs in, or earphones covering, resting on, or inserted in, both ears.”