{"id":"S2003009074","label":"Rumble strips","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2003009074","normalized_label":"rumble strips","broader":["http://id.loc.gov/authorities/subjects/sh85114474","http://id.loc.gov/authorities/subjects/sh85114514"],"aliases":["Centerline rumble strips","Shoulder rumble strips","Strips, Rumble","Transverse rumble strips"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2003009074","provider":"lcsh","revision":"2f8e621999b34ced","taxonomy_revision":"f050b5d4780b1289","title":"Rumble strips","url":"/topics/S2003009074","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14411734339350323714","address_version":"morton4x16-v1","coordinates":[0,477,36344,51200],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}