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This European Standard specifies minimum and maximum limiting requirements for braking systems and performance. The Transport Authority defines the particular parameters where required in this European Standard and specifies any additional braking requirements to the vehicle builder/braking system supplier. This European Standard specifies requirements and performances for the braking of vehicles for urban transport systems, running on steel or rubber tyred wheels and guided by steel rails or other equivalent means. This European Standard applies to vehicles operating on: - tramways; - light railways; - metros on steel wheels; - metros on rubber tyred wheels; - Commuter/Regional railways; and is applicable to: - all newly designed vehicles; - all major refurbishments, if these include either redesign or extensive modifications to the brake system; - any new builds of existing designs of vehicles. For this type of vehicle, the Transport Authority may specify performance values different from those defined in this European Standard. This European Standard does not apply to special transport systems, e.g. suspended monorail, rack and pinion lines, isolated operations such as scenic railways, special duty vehicles, etc. Transport Authorities shall ensure that specifications include this European Standard as part of the brake system requirements. Suppliers shall identify, at the time of tendering, any non-compliances against this European Standard. Compliance with the functional and performance requirements defined in this European Standard is verified by testing in accordance with EN 13452-2.