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From memory: Shellgrip is the generic term for that sort of road surface covering. But that stuff is expensive to buy, expensive to lay properly, usually not laid properly and doesn't last as long. See where there are truck and the stuff gets worn. So from high grip, as the surface wears and detritus builds up the surface becomes smooth. Usually can see the worn bits where tyres tracks have been.
The worst was the tar and then stone chip covering that is dangerous and no longer used on roads with speed limits above 30mph.
lynx-
Shellgrip I believe was a product. Presumably Shel. It did wear as you say but pre-wearing it was incredible. Other versions are available with similar grip. Rare to see long stretches of it here. IOM has loads of it.
I totally agree about the shit tar and stones. We still have that here. Another means to wreck you!
TGR
Any particular reason why? Apart from the obvious tyre wear.