when cars were first coming into use pennsylvania passed a law which would require all motorists piloting their "horseless carriages", upon chance encounters with cattle or livestock to (1) immediately stop the vehicle, (2) "immediately and as rapidly as possible ... disassemble the automobile", and (3) "conceal the various components out of sight, behind nearby bushes" until equestrian or livestock is sufficiently pacified.

In the UK self-propelled 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.m.wikipedia.org/wiki/Red_flag_traffic_laws