Reading the Wikipedia it looks like it’s not about the inventions of the individual things, but he utilized them together and potentially further optimized them (round about from 2 lanes to 1 to reduce accidents) and established a rulebook that officers should enforce and the public are expected to know and follow.
Reading the Wikipedia it looks like it’s not about the inventions of the individual things, but he utilized them together and potentially further optimized them (round about from 2 lanes to 1 to reduce accidents) and established a rulebook that officers should enforce and the public are expected to know and follow.