North America

Turn restriction (only_straight_on) 15297483 lacks 'via' node (guessing it should be at https://www.openstreetmap.org/?mlat=37.286410&mlon=-79.976055&zoom=17, why don't you add it to the OSM data?)

Turn restriction (no_u_turn) 8824190 lacks 'to' way

Turn restriction (no_u_turn) 803926747 doesn't start or end at 'via' node or way

Turn restriction (no_left_turn) 7056320 lacks 'from' way

Turn restriction (no_u_turn) 502795544 doesn't start or end at 'via' node or way

Turn restriction (only_straight_on) 8824191 lacks 'to' way

Turn restriction (no_right_turn) 309504962) ways don't connect at an end point

Turn restriction (no_right_turn) 458236887 doesn't start or end at 'via' node or way