Hi Layft Greater, thank you for reaching out and pointing out this sign. I noticed this sign doesn’t look like a typical living street sign, as it notes “Zone” and has a reduced speed limit. Are you able to confirm if these signs fit the legal definition for living streets where pedestrians have legal priority over cars, or are these signs more accurately used for reduced speed limit zones?

Also, while further investigating this area, I noticed the same sign here (https://www.mapillary.com/app/?pKey=537917121352095) for the tertiary road and two more signs to the Southeast here (https://www.mapillary.com/app/?pKey=570843680704837) and here (https://www.mapillary.com/app/?pKey=916611305621610) where the roads are a mix of living street, service, and residential. Do you think it would be best to make all of these roads living streets or would it be more accurate to use a maxspeed=20 tag in these scenarios? 
Thank you!