you said "[...] whereas it is intuitive to go straight", but the road markings show that you can't do that. the ramp on the northern side of the road is oneway. 

as a rule-abiding citizen, we should follow the road markings, rather than swerving across the road and going the wrong way up that ramp.

if the navigation instructions are unintuitive, you could try add these tags to the ramp segments:

cycleway=link
street:name=MacKenzie Avenue
name=MacKenzie Avenue

this makes it more clear that movement is not a left turn, but rather, a movement within the same road. Documentation here: https://osm.wiki/Tag:cycleway=link and https://osm.wiki/Key:street:name