Dashed lines should be used only if there is a reason to allow vehicles to cross that part (e.g. bus stop, parking, intersection). Otherwise cycle lanes should separated from other lanes with closed line. Though traffic sign for bike lanes is little bit misleading with it’s dashed line.
Hmm, “should”, or “are”? That even cycle lanes that are marked with a continuous line become dashed lines at intersections etc. is normal. Is that what you mean?
As I read the (auto-translation of the) legislation, cycle lanes are actually defined to be exclusively or also dashed lines:
See 729/2018 Tieliikennelaki, Liite 4.1. Pituussuuntaiset tiemerkinnät, K2 Ajokaistaviiva
And I wonder, even if both dashed and continuous lines for cycle lanes exist (sources for that would be great, or mapillary / streetview images), how would the 2-1 roads in Finland differ from normal (dashed) cycle lanes? (After all, we likely want to tag cycle lanes on 2-1 roads different from “proper” cycle lanes)
Yes thats right. I’m saying should because bicycle markings on the road are sometimes a mess, even municipalities don’t always know what they are doing.
Tieliikennelaki actually says:
Pyöräkaista, linja-autokaista tai raitiovaunukaista erotetaan muusta ajoradasta normaalia leveämmällä ajokaistaviivalla, jonka viivan ja välin suhde on 1:1.
Pyöräkaista, linja-autokaista tai raitiovaunukaista erotetaan muusta ajoradasta normaalia leveämmällä sulkuviivalla.
So when using dashed line, use wider markings with 1:1 proportion and when using solid line use wider markings. It doesn’t say that bike lanes should be exclusively either, it really depends on the situation. See this example, where line changes to dashed when coming near the exit of a driveway. Mapillary There’s a good set of images on that street with multiple different expamples.
I would say kylätie differ from bike lanes in couple different ways. There aren’t any traffic signs indicating bike lane (E13 Pyöräkaista), pedestrians are allowed to walk on it and other vehicles are always allowed to yield to the side because of dashed lines. Because it’s still a quite new thing, there is usually custom sign telling drivers that kylätie begins. Two-way lanes are not that common either atleast on public roads.
For me the distinction makes a lot of sense, because I haven’t ever thought of advisory lanes as true cycling lanes: You can ride your bike there, but it’s not the best solution. Kind of like walking along the shoulder of the road in the absence of a proper sidewalk or separate footway. It is legal, but it can be dangerous and I wouldn’t be happy if I got routed there by a navigation app.