Core Investment Programme

Road Accidents

Street Crime

Total 'Potential' Benefits

CIP Investment NPV

BCR For AST

Average Night-time Accidents pa

Assumed Reduction from Lighting

'Potential' Benefits per annum

NPV of Benefits over 25 yrs

'Tangible' Loss per annum

Assumed Reduction from Lighting

'Potential' Benefits per annum

NPV of Benefits over 25 years

A

B

C

D

E

F

G

H (F*G*A)

I

J (E+I)

K

L (J/K)

75%

600

15%

£4,725,000.00

£69,048,295

£6,878,100

15%

£773,786

£11,307,645

£80,355,940

£18,000,000

4.46

Notes

1.  Figures in columns A and K should be based on data from the OBC and should relate to lighting columns only (i.e. should exclude illuminated signs)

2.  Potential Benefits from reduction in night-time accidents (column D) based on average cost of accident during hours of darkness (Source - DfT Economics Note ) - I.e.        

3.  NPV calculations (columns E and I) based on 25 years, 3.5% discount rate and assumes benefits accrue at 20%, 40%, 60%, and 80% during years 1 to 4 respectively

4.  For calculation of 'Tangible Loss' from Street Crime (Column F) see Analysis of Crime Data in figure 2.2.3