If you’re headed to Black Rock City, do not arrive with bikes mounted to the rear of your car. They will obscure the license plate.
It’s only illegal here in Black Rock City.
My camp mates were pulled over last night after midnight arriving just inside Greeters by PCSO. Cops use this as an excuse for finding something else, like contraband or open container. Erik and Doriandra were not in possession nor drinking but others, not so squeaky-clean get the entire contents of their cars and trailers dumped into the desert and citations.
A heads-up. Figure out something else to get your bicycles into BRC. It’s scary, uncivilized and mean-spirited.