A class of locomotives is a group of locomotives built to a common design, typically for a single railroad or railway. Classes can vary between country, manufacturer, and company. For example, the United States generally used the Whyte notation for steam locomotive classification, but the Baldwin Locomotive Works had their own classification system. A list of locomotive classification systems follows:

United States of America

Whyte notation AAR wheel arrangement Pennsylvania Railroad locomotive classification List of Milwaukee Road locomotives List of Norfolk and Western Railway locomotives

Britain

British Rail locomotive and multiple unit numbering and classification List of British Rail classes Locomotives of the Caledonian Railway Locomotives of the Great Northern Railway Locomotives of the Midland Railway GWR locomotive numbering and classification SR locomotive numbering and classification Southern Railway multiple unit numbering and classification LMS locomotive numbering and classification LNER locomotive numbering and classification Steam locomotives of British Railways

Ireland

Steam locomotives of Ireland Diesel locomotives of Ireland Multiple units of Ireland

Germany

List of Bavarian locomotives and railbuses German locomotive classification DRG locomotive classification DR locomotive classification DB locomotive classification UIC classification of locomotive axle arrangements

Finland

List of Finnish locomotives France

List of SNCF classes

Indonesia

List of locomotives in Indonesia

Russia

List of Russian steam locomotive classes

China

List of locomotives in China

Switzerland List of stock used by Swiss Federal Railways Swiss locomotive and railcar classification

South Africa

South African locomotive numbering and classification List of South African locomotive classes

Japan

Japan Railways locomotive numbering and classification

New Zealand

Locomotives of New Zealand

References