Definition: You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.
Input: In the United States, although the legality of headlight flashing varies from state to state, a federal court ruled that flashing headlights was a constitutionally protected form of speech, issuing an injunction prohibiting a police department from citing or prosecuting drivers who flash their lights to warn of radar and speed traps.

is it illegal to flash your headlights to warn of police in georgia?