eli5, Who controls emergency signs on highways? Are they connected to the internet?

Question

I’ve seen this signage before, but I’ve never thought about how these signs get updated throughout the whole state instantly. TIA!

In: 2

Answer 1

Not sure about everywhere in the world.. in the UK majority of emergency signs on motorways were controlled by people. As smart motorways are being introduced now, I think computers take over a lot of the jobs previously held by people. I would imagine they’d still need some people incase anything went wrong or crashed though.