These objects need a new tag, not a sub-tag of traffic_calming=bump (220k uses), for the simple reason that it has a different effect on the road users. I have myself tagged many such sausage-shaped bumps with traffic_calming=bump and no sub-tag. They slow down every vehicle, but are not as particularly nasty to cyclists and, probably, motor cyclists as the ones in the sample pictures. If you were to create a sub-tag for the new ones, we would need to add a dìfferent sub-tag to all the existing occurrences of .
Concerning the tagging: If they are used only in a few countries, then we may want to use the term used in one of these country, if there is no British English term available.
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