They already have a system similar to this in norther Oregon, along the Columbia river. The reflectors turn from silver to blue when it is freezing. Putting markers on the road seems silly by comparison.
It doesn't matter if it's ice covered or not. It's supposed to alert drivers so that they can be more cautious. You don't drive carefully ONLY if it's icy, you're supposed to drive according to the current road conditions which is the purpose of colour changing roads. To help the driver recognize dangerous driving conditions.
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How's it going to distinguish between ice covered pavement and just freezing cold pavement?
oh they'll find a way
They already have a system similar to this in norther Oregon, along the Columbia river. The reflectors turn from silver to blue when it is freezing. Putting markers on the road seems silly by comparison.
It doesn't matter if it's ice covered or not. It's supposed to alert drivers so that they can be more cautious. You don't drive carefully ONLY if it's icy, you're supposed to drive according to the current road conditions which is the purpose of colour changing roads. To help the driver recognize dangerous driving conditions.