Porter feared that she might be cited again if she attempted to honk her car horn in support of other protests or demonstrations, according to the complaint. “Vehicle Code § 27001 violates the ...

Susan Porter had argued her beeps of support were protected by the First Amendment. "The car horn is the sound of democracy in action," her lawyers wrote in their appeal. But the court didn’t bite.

In that matter, a driver repeatedly honked her horn while driving past protesters and was issued a ticket for violating state law against misuse of car horns. The statute on point — Vehicle Code ...

The director of Indian operations for the German car maker Audi has revealed something of an industry secret: the company designs special extra-loud, ultradurable horns for the vehicles it sells here.