The U.S. National Highway Traffic Safety Administration stunned safety advocates by proposing new vehicle design rules that it says will help reduce pedestrian deaths. The rules will likely change vehicle design permanently.
In the United Kingdom, the law required self-propelled vehicles to be led by a pedestrian waving a red flag or carrying a lantern to warn bystanders of the vehicle's approach.
Interesting, I hadn’t heard of that before. Required 3-4 people to be employed too.