With an audience of federal regulators, General Motors’ chief product cybersecurity officer decided on Wednesday to share a lesson in British history.

It was in the late 19th century when the British Parliament passed the Locomotive Acts, a set of policies that became known as the red flag laws for requiring drivers of automobiles to have someone out in front waving a red flag to warn of the approaching vehicle. That measure, along with tight speed limits, was part of a well-intended effort to protect everyone from drivers and passengers to pedestrians and livestock.