What percentage of crashes involve two or more vehicles?

Answer: A — 64%

Most crashes involve interactions with other drivers rather than only a single vehicle. About 64% of crashes involve two or more vehicles, so the majority of crashes are multi-vehicle events. This highlights why staying alert to nearby cars, maintaining a safe following distance, signaling, and being prepared to slow or stop for others is so important. The other numbers don’t fit because they would imply far fewer multi-vehicle crashes or exactly half, which isn’t supported by the typical crash data.