Paragraph 14 Measurement units for NRVs and CSTsF1
The following table sets out the measurement units for NRVs and CSTs.
| Risk category | Measurement units | Scaling bases |
|---|---|---|
| 1. Risks to passengers | 1.1 Number of passenger FWSIs per year arising from significant accidents/Number of passenger train-km per year | Passenger train-km per year |
| 1.2 Number of passenger FWSIs per year arising from significant accidents/Number of F2passenger-km per year | Passenger-km per year | |
| 2. Risks to staff or employees, including the staff of contractors | 2. Number of employee FWSIs per year arising from significant accidents/Number of F3train-km per year | Train-km per year |
| 3. Risks to level crossing users | 3.1 Number of level-crossing user FWSIs per year arising from significant accidents/Number of train-km per year | Train-km per year |
| 3.2 Number of level-crossing user FWSIs per year arising from significant accidents/[(Number of Train-km per year x Number of level crossings)/Track-km)] | (Train-km per year x Number of level crossings)/Track-km | |
| 4. Risks to others | 4. Yearly number of FWSIs to persons belonging to the category ‘others’ arising from significant accidents/Number of train-km per year | Train-km per year |
| 5. Risks to unauthorised persons on railway premises | 5. Number of FWSIs to unauthorised persons on railway premises per year arising from significant accidents/Number of train-km per year | Train-km per year |
| 6. Risk to society as a whole | 6. Total number of FWSIs per year arising from significant accidents/Number of train-km per year | Train-km per year |
Annotations
Textual amendments
- F1
Schs. 8-11 inserted (31.12.2020) by The Rail Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/837), reg. 1, Sch. para. 1 (as amended in Sch. 11 paras. 14, 16, 17 by S.I. 2019/1310, reg. 1(2)(c), Sch. 1 paras. 2, 3, 4); 2020 c. 1, Sch. 5 para. 1(1)
- F2
Word in Sch. 11 para. 14 substituted (30.6.2023) by The Railways and Other Guided Transport Systems (Safety) (Amendment) Regulations 2023 (S.I. 2023/540), regs. 1, 3(5)(a)
- F3
Word in Sch. 11 para. 14 substituted (30.6.2023) by The Railways and Other Guided Transport Systems (Safety) (Amendment) Regulations 2023 (S.I. 2023/540), regs. 1, 3(5)(b)