Complex sentence: The main type of infrastructure in Copenhagen is the cycle track, unlike those commonly seen elsewhere, cycle tracks in Copenhagen are one directional, with one cycle track on each side of street flowing the same direction as vehicular traffic.
Split into simpler sentences: The main type of infrastructure in Copenhagen is the cycle track. Unlike those commonly seen elsewhere, cycle tracks in Copenhagen are one-directional, with one cycle track on each side of street flowing the same direction as vehicular traffic.