Quote:
Originally Posted by curves2000
Someone pointed out to me that a lot of roads like Deerfoot, QE2, Stoney Trail all share similar characteristics. Where large signs and underpasses are located, the road surface under them becomes a more "rough" pavement and then becomes a lot smoother prior to and after sign/bridge. I thought they were nuts but driving up to Airdrie and some other places I noticed this trend a shocking amount almost like clock work. Any thoughts?
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Quote:
Originally Posted by powderjunkie
My guess is that it's intentional to have a more abrasive surface (better grip) where vehicles are more likely to manoeuvre/slow/accelerate. And google confirmed this to be correct.
Very interesting, I've never noticed this
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There is nothing in Alberta road construction specifications about changing the road surface near overhead signs and bridges. It's all paved the same throughout. Changing the roughness or texture of the road would be a nightmare to administer contractually.
I can only assume powderjunkie's google search pulled up something about rumble strips as a traffic control method.