Cobblestones, but bikeable, sort of. In Nygata and the northern part of Nedre Bakklandet, Trondheim laid cobblestones with smooth cycling slabs called sykkelheller as part of a Miljøpakken upgrade that ran 2015–2016. The idea is obvious: keep the historic street surface, but give cyclists a continuous, less-rattly line. The catch is also obvious once you watch the street for two minutes. Both pedestrians and cyclists drift towards the comfortable strip, because the surrounding cobbles are rough. Miljøpakken explicitly calls out this conflict, plus the fact that the current layout makes good w…