{"id":"S85042092","label":"Electro-diesel locomotives","description":"Here are entered works on locomotives that run alternatively by an external electric power supply or by an onboard diesel engine as needed. Works on locomotives that employ an onboard diesel engine to generate electricity to turn the wheels, as well as locomotives whose diesel engines power the wheels through a gear box or through a hydraulic system are entered under [Diesel locomotives.]","source_url":"https://id.loc.gov/authorities/subjects/sh85042092","normalized_label":"electro-diesel locomotives","broader":["http://id.loc.gov/authorities/subjects/sh85041798"],"aliases":["Dual-mode locomotives"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85042092","provider":"lcsh","revision":"3333d3ab77dab7dd","taxonomy_revision":"f050b5d4780b1289","title":"Electro-diesel locomotives","url":"/topics/S85042092","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9549887683837445696","address_version":"morton4x16-v1","coordinates":[0,20,18062,45056],"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}