ERTMS / ETCS Braking Curves - UIC

Safety margins (2)The facts:Harmonised safety margin work ongoing in B126.15. Based on actualsafety margins used in existing systems. Results not available in timefor SRS300.Relation between performance requirements and safety requirementscan vary between the different railways, specifically in the case of anexisting line with level 1 overlay.The short term solution for SRS300:Implement the safety margins as a national value which can be sentto the train from trackside. This is a temporary solution, to besuperseded by the harmonised safety margin as soon as it becomesavailable.15 - 17 December 2004 UIC ERTMS Conference Rome 14