Manual Issued by British Railways 'Driver's Manual Locomotives and Multiple Units 1'. Includes sections on Driving Instruction Class 20, 24, 25, 26, 27, 31, 37, 40, 45, 46, 47 and 50 locomotives (BR 33056/1); Diesel Multiple Unit Trains with Mechanical Transmission and Blue Square Coupling Code (BR 33056/2); Braking Instructions Dual Brakes Vacuum Brakes E.Q. Vacuum Barkes A.W.S (BR 33056/3); Driver's Safety Device (BR 33056/4); Electric Train Heating (BR 33056/5); Multiple Working of Locomotives (BR 33056/6); Fire Extinguishing Equipment (BR 33056/7); General Data and Principal Dimensions (BR 33056/10).