|Characterisation Method Name:|
|Noise impact on severe nuisance|
|Principal Method Name:|
|EPS: estimate of the people affected|
The characterisation factor is determined by the empirical method.
Category indicator value in system considered
Noise levels in most cities are above 65 dB (A), affecting between 10 and 20 per cent of
inhabitants in Western Europe and up to 50 per cent in some cases in Central and Eastern
Europe (EEA, 1995) Considering the part of the inhabitants in Western and Eastern Europe that is exposed to noise levels above 65 dB(A) and considering that a large part of the population live in the countryside outside OECD (Organisation for Economic Co-operation and Development), a best estimate of 25% of the global population is assumed.
Assuming that the disturbance mainly occur at rush hours, around 4/24 = 0,167 of the
time there is a nuisance. The indicator value is thus around 5.28*0.25*0.167 = 0.22
billion person-years of nuisance.
Contribution to category indicators value from a flow unit
1990 there were 442 million passenger cars and 138 million commercial vehicles. The
total mileage of the world fleet is not known, but may be roughly estimated. One way is to assume an average mileage of 15000 km/year. The total mileage will then be
(442+138)E+06 *15000 = 8.7E+12 km. Another way is to use world statistics on fuel
production. According to UN (1994) the total production of light petroleum products was
1,67E+09 metric tons 1991. Assuming an average fuel consumption of 1 kg/10km there
would be fuel for 1.67·E+13 km. As not all of the light petroleum products are used as fuel for road vehicles, it seem reasonable to use the first estimate, 8.7·E+12 km.
Calculation of characterisation factor
The characterisation factor will thus be 0.22·E+09 / 8.7·E+12 = 2.53·E-05 person-years/ vehicle km.
|1. EEA 1995, The DOBRIS assessment of the state of environment. 2. UN (1996), UN Statistical Yearbook for 1994, 41 st issue, New York 1996.|
|The system considered is global and the year 1990.|
|Characterisation Parameter||Category Indicator||Impact Indication Principle||Aspect||Substance||Quantity||Unit||Notes|
|Noise||2.53E-05||p yr/vechicle km|