Abstract
A two-line braking system is described as being as safe as and better than the three-line system currently used in the United Kingdom. How this system can be achieved, in line with European thinking on the subject, is also reported. To maintain the improvement obtained by using a two-line system, spring brakes, emergency operated by means of a ‘kick-down’ release valve, true brake balance using load sensing valves, reliable anti-skid devices and automatic slack adjusters is discussed.
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