Skip to main content

Table 3 Calculation of Frequency of N or more fatalities (F) for static elements at risk

From: Quantitative risk assessment for static and mobile road users: methodology and application at A82 Glen Coe, Scotland

Average occupancy in 15-miniute period, N

consequence class

P(Fatality|Hit)

[2]

No 15-min visits per year with Average occcupancy of N

[3]

Frequency of occurrence of N Fatalities

 = [1] × [2] × [3]

Cumulative frequency of N or more fatalities (F)

3

0.01

3936

1.976E−07

4.338E−05

13

0.01

35,980

1.806E−06

4.318E−05

60.5

0.01

218,695

1.098E−05

4.138E−05

150.5

0.01

525,099

2.636E−05

3.039E−05

250.5

0.01

80,281

4.031E−06

4.031E−06

  1. [1] P(Individual Person Hit) = P(Event) x (Hit|Event) =  5.021E−09