Complex sentence: An on-street bike lane starts at the Walkinstown roundabout and continues to Templeoge at the junction of the N81 from where it changes to an off-street bike lane until the junction with the R114 where again it switches to an on-street lane.
Split into simpler sentences: An on-street bike lane starts at the Walkinstown roundabout and continues to Templeoge, at the junction of the N81. There, it changes to an off-street bike lane until the junction with the R114, where it switches back to an on-street lane.