Germany, Austria and Switzerland

Turn restriction (no_left_turn) 1831036 lacks 'from' way

Turn restriction (no_u_turn) 149630169 ) ways connect in more than one place

Turn restriction (only_right_turn) 3925061 multiple 'to' members are only accepted for no_exit restrictions

Turn restriction (only_straight_on) 2314742 lacks 'from' way

Turn restriction (no_left_turn) 17484428 lacks 'via' node (guessing it should be at https://www.openstreetmap.org/?mlat=48.228393&mlon=16.380790&zoom=17, why don't you add it to the OSM data?)

Turn restriction (only_right_turn) 6190814 lacks 'from' way

Turn restriction (only_straight_on) 15002537 check: 'via' way(s) are used in only_straight_on restriction

Turn restriction (only_right_turn) 6190814 lacks 'to' way