If you are lucky enough the cop will realized he fucked up by not signing the ticket and then file an obstruction of justice charge. They will pick your ass up for real. The shit happened to my brother, it was pretty fucked up. We were at his apartment and talking about if he could get out of the fine because the cop didn't sign, and the knock on the door, the warrant, the cuffs......He ended up losing his license for some reason involving this so idk.