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European Transport Research Review

An Open Access Journal

Table 2 Rail Advisory Forum requirements on AL

From: Galileo for railway operations: question about the positioning performances analogy with the RAMS requirements allocated to safety applications

Safety-related applications

Operating conditions

Examples

Horizontal Alert Limit –HAL

I. High density lines

Train control on I / station / parallel track

2,5 m

II. Middle density lines

Train control on II

20 m

III. Low density lines

Train control on III

50 m

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