Division 3 The risk rating shall be calculated using the following formulas:
United Kingdom
- (a)
The formula for the overall risk rating:
Where
RR DYioverall risk rating score
DY1total for the defects in year 1, 2, 3
#…in year 1
DDnumber of…
MaDdangerous deficiencies
MiDmajor deficiencies
Cminor deficiencies
checks (technical roadside inspections or periodic and voluntary roadworthiness tests) in year 1, 2, 3
- (b)
The formula for the annual risk rating:
Where
AR #…annual risk score
DDnumber of…
MaDdangerous deficiencies
MiDmajor deficiencies
Cminor deficiencies
checks (technical roadside inspections or periodic and voluntary roadworthiness tests)
The annual risk shall be used to assess the evolution of an undertaking over the years.
The classification of undertakings (vehicles) based on the overall risk rating shall be performed in such a way that the following distribution within the listed undertakings (vehicles) is reached:
-
< 30 % low risk
-
30-80 % medium risk
-
> 80 % high risk.