In Great Britain, a highway=living_street is identified by the Home Zone sign (the very rare TSRGD diagram 881 ), but Mapillary is generating false positives for the contraflow cycle line sign (the very common TSRGD diagram 960.2 ). Almost every instance of highway=living_street I have encountered in OSM so far has been incorrectly tagged and I would rather this problem were not compounded by a misidentified traffic sign.
See e.g. #327654756047232 on Narrow Street, London
 Item 27 in the Sign table — Schedule 11, Part 2 TSRGD 2016 at https://www.legislation.gov.uk/uksi/2016/362/schedule/11/made
 Item 7 in the Sign table — Schedule 9, Part 4 TSRGD 2016 at https://www.legislation.gov.uk/uksi/2016/362/schedule/9/made