Two-way cycleway on one side of two-way road

In Quebec, it's fairly common to have a road with a two-way cycle track or lane on only one side of a two-way road. This is an example on Google Stretview, and this is the general schematic:

|ab| C D |

a = bike lane backward b = bike lane forward C = general traffic lane backward D = general traffic lane forward

The separation between bike and general traffic lanes is either just a painted line (making it a bike lane IMHO) or flexible poles (as on the StreetView pic; permeable) or low concrete barriers (making it a track), but that's not the problem: How do properly tag this in the left/right scheme? I think for routing purposes it's pretty important to convey the information on which side of the road the bike infrastructure is, especially if it changes its location over the course of a road. Any suggestions how to properly tag this?