It also works conversely, they can't hear an approaching emergency vehicle or a car horn......
folks all these arguments are non-sequiters.
this is about MONEY
california needs money DESPERATLY
the average harley rider (and most likely other brands too) has more incomed and educated for more income and is a source of income.
So all the ballerina’s whining about noise and those who ride should just focus on showing the LAW is silly since the law is already on the books.
(not to mention federally preempted)