When regular cars first appeard vehicles had to be led by a pedestrian waving a red flag or carrying a lantern to warn bystanders of the vehicle's approach. ht

When regular cars first appeard vehicles had to be led by a pedestrian waving a red flag or carrying a lantern to warn bystanders of the vehicle's approach. https://en.wikipedia.org/wiki/Red_flag_traffic_laws https://en.wikipedia.org/wiki/Red_flag_traffic_laws