The representation of turning lanes at this intersection should be reviewed to better reflect the intersection configuration and real world traffic flow. Thanks.

there's an access track that runs around the outside of this building. it runs one way in the clockwise Direction

Unable to answer "What kind of parking is this?" for osm.org/way/610077305 via StreetComplete 48.0:

No parking, private property

Attached photo(s):
https://westnordost.de/p/119629.jpg

osm.org/node/1969381328

Is traffic_calming=yes correct and needed here?

It seems to me that all useful info is already provided by barrier tag and this is not adding anything (except opinion why this barrier was placed).

If traffic_calming key should be present - which specific value would be fitting here?

Note also that it appears to be placed not to calm traffic, but to block car access.

heading west the navigator instructor the user to take the 6th exit on this roundabout. it should be the second exit

is there a left turn restriction at this intersection because the navigator is avoiding a left turn and yet the left turn is permitted here

the lane guide hair should read two lanes going straight and two lanes turning right

There is a beach here called Number Sixteen