Protection against "Crash for Cash" schemes. "Crash for cash" is where a person intentionally causes an accident, but makes it look like it's your fault and that they're the "innocent victims". While you may not be able to avoid being sued, you would at least have substantial evidence to defend against their claim. Furthermore, these incidents could lead to fraudulent claims being lodged with the Road Accident Fund. If you witness / record a suspicious accident, or are aware of fraudulent claims, these can be reported to the RAF.