Hi, encountered same parking restriction sign. qqqqqqqqqqqqqqqqqqqq was kind enough to enlighten in https://www.openstreetmap.org/changeset/147259783. The restricting tag would be "restriction:conditional=no_parking @ (Th 10:00-12:00)". Now need to keep in mind to add the photo of the sign to wiki: https://wiki.openstreetmap.org/wiki/Conditional_restrictions :)