British Rail Class 166

The British Rail Class 166 Networker Turbo is a fleet of 21 three-car diesel-hydraulic multiple unit passenger trains that ABB Transportation built at its Holgate Road Works in York between 1992 and 1993, specified by and built for British Rail. It is a faster, air-conditioned variant of the Class 165 Turbo intended for longer-distance services, with a top speed of 90 miles per hour, two toilets per unit, tables in first class and dedicated cycle and luggage storage in the middle carriage. The Class 166 belongs to the Networker family and is known as the Networker Turbo to distinguish it from the electric members of that family. The units are still in service, operated solely by Great Western Railway and now based in Bristol after working the Thames Valley alongside the Class 165.