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I read that as “let’s cut corners instead of building/improving roads”.

What sort of road building / improving did you have in mind?

We’re talking about city centre slow (<12mph) driving, I’m really not sure what road improvements could improve safety of silent cars?

Probably a lot can be done to help safety without adding noise. Maybe something as simple as warning signs for silent cars can help.
My bad. I completely missed the point and thought they would make them noisy in general.

I wonder how they will solve the noise problem if it’s just slow moving traffic.

So the road should create the sounds? or have some lights or other SciFi or software+hardware combination when a simple solution is possible.
I think roads should emit high energy lasers to prevent pedestrians to step on the road if the area is not designed to cross the road. :)

Kidding. I was thinking like adding more guidance for pedestrians and prevent them jumping on the road with pre-cautions but guess I missed the point since the news says when they are under 12 mph and reversing.

Although I have encountered quite a lot of "lazy" pedestrians who just cross the street immediately instead of waiting a few seconds for the car ('the car' means there is only a single one) to pass, I don't think that this is causing the majority of collisions. More likely someone took a right or left turn and didn't see the pedestrian because the drivers have to pay attention to multiple things at the same time.

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