The Electro-Motive Diesel (EMD) Class 66 (EMD JT42CWR) are Co-Codiesel locomotives built by EMD for the European heavy freight market. Designed for use in Great Britain as the British Rail Class 66, a development of the Class 59, they have been adapted and certified for use in other European countries.[3] Outside Europe, 40 locomotives have been sold to Egyptian Railways for passenger operation.[4]
A number of locomotives built for Euro Cargo Rail in France with roof-mounted air conditioning are classed Class 77. In Germany ECR units operated for DB Schenker were numbered as class 247, re-classified as class 266 by the Eisenbahn-Bundesamt to match other Class 66 locomotives operating in Germany.[5]
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