California v. Byers, 402 U.S. 424 (1971), was a case in which the Supreme Court of the United States decided that providing personal information at the scene of an accident does not infringe on one's Fifth Amendment privilege against self-incrimination.

Relying on United States v. Sullivan, 274 U.S. 259 (1927), the Chief Justice wrote that even with the possibility that compliance under the statute were an incrimination per se, an extension of Fifth Amendment protection would be an "extreme if not extravagant application."

Justice Harlan noted that there were a line of cases that restricted the use of compulsory, self-reporting information for prosecutorial purposes, but they should be limited and not overruled.

He criticized the plurality for making broad determinations on the tension between state law and constitutional protections writing, "only rivers of confusion can flow from lakes of generalities."

Justice Brennan found that the record in the instant case resulted in a conviction from self-incrimination and that it was unnecessary to address any broader issues.