Please do not mess with the power lines if you don't know what you're doing. This 132kV line is new and have no connection to the 22kV distribution network below it. The towers are placed based on new Aviation obstacle data available as a layer in editor.

People tag for the renderer by using the banket tags. Its only access= values that show up on the map. So you end up with a bunch of overrides making the tag list unnecessary long.
Norwegian sign 306.1 should be tagged a motor_vehicle=no

If i left some tags stating use sidepath, then that is an oversight by me.

For Bergen light rail you can look at the strong criteria for light rail over tram on the wiki page you linked.

And please do not mess with access tags if you do not know how they work in Norway. Agnes Mowinckels gate has a sign forbidding general motor vehicles except buses. the access=no tag is not used here unless its forbidden for all traffic modes. You effectively blocked walking and biking on the road.

Please revert the Bergen light rail back to its original tag. It is not a tram as it is fully signaled and on dedicated track for most of the line.

The N50 data is made up of areas. Someone destroyed the wood relation south of it so it looks weird. I'll fix that.

Why did you add fictitious power lines at the dam? Please don't do that.

Added the foot and bicycle restrictions on fv510 as well now so it should be all good.

Road class in OSM is set based on what kind of road it is. You can look at the wiki for this: osm.wiki/Norway/Highways
There is also a page for the default access restrictions for each highway class. osm.wiki/OSM_tags_for_routing/Access_restrictions#Norway
Those can be overridden by specific access tags. access=*

Fixed it now. Use access tags, not highway class in the future.

Please don't use areas for highway tags it confuses routers that end up using the edge of the area at times.
There are other tags for outlining highway areas.
You also made a duplicate at the helipad by adding an area over the node.
You can draw the outline of the helipad and use that tag, but don't tag it as a highway. Just remmeber to remove the helipad tag on the node.

The ways around the school should probably be highway=footway or cycleway.
The pedestrian value is used for "gågate" or a square in towns/cities.

osm.wiki/Norway/Highways

Tertiary is not really set in stone for Norway so some put it on a lot of roads.
Use of tertiary might encourage more through traffic on roads depending on the router used for the app or website.
I believe some routers actually ignore tertiary due to the variation in use cases.
I've become more cautious using this class as my experience with OSM has increased.

Did the Borgavegen get a separate foot- and cycleway or just a sidewalk?

Wouldn't be wrong setting that part to tertiary I guess. Just don't see the point. Unclassified is between residential and tertiary anyway.

You changed them all from communication_tower to tower. Those two are not the same. The wiki is kind of confusing on this unfortunately.
man_made=communications_tower

Please explain the reason for this change. They were tagged as communication_tower for a reason.

Velkommen til OSM. Eit tips: flytt heller gammal node og ikkje rediger adresse nodar som er automatisk importert frå Kartverket. Grunnen er at mange plassar kan det vere fleire personar/bedrifter på samme adresse.

Hei, vær snill å ikkje ta knekken på lancover relasjonar når du redigerer.

Please don't map residential and private properties like these as leisure=garden. This is more for public gardens

This area where the path is is considered uncultivated land and the freedom to roam applies. There is no law forbidding people to walk this path. Even if its not marked it can be naturally created by people walking the same path over and over. This is what highway=path is used for in Norway, naturally created trails/paths.

Ei adresse kan ha fleire firma, så difor er det ikkje smart å bruke desse nodane. Dei er henta frå kartverket og blir automatisk oppdatert.

Ikkje endre på addressenodar som er langt inn automatisk. Lag heller ein ny node med bedrift og anna info.