Zbornik radova Koridor 10 - Kirilo Savić

3rd International Scientific and Professional Conference
CORRIDOR 10 - a sustainable way of integrations
To simplify the calculus, decrease or increase of rail or wheel noise influence for 10 dB is used in the
numerical example. Still, in practical terms, it corresponds to an increase or decrease of noise at
emphasized corrugation or roughness of the wheel rim.
FIG. 12. Total noise level in case of various noises induced by wheel and rail
If the noise that one of the elements is creating is greater, then greater effects in total noise reduction
are achieved by intervention on the element that is greater source of noise. This can be illustrated with
a simple numerical example. Let’s suppose that one of the elements (wheel or rail) emits the noise of
the level “A” expressed in dB, and another of the level “B”. If the intervention reduces the noise level of
one element by, for example, 10 dB, simple mathematical analysis (2) can prove that total noise level
is less if noise reduction measures are applied precisely on the element which emits greater noise:
10
log(10
A 10
10
10
B
10
)
10
log(10
A
10
10
B 10
10
)
10
A
10
10
A B
10 10
A B
B
10
(2)
This proves that efficient noise control must contain design and maintenance measures of both
elements, so it can be intervened in time on the element which emits greater levels of noise.
6. CONCLUSION
Railway infrastructure investments have to be planned in a way that maximises positive impact on
economic growth and minimises negative impact on the environment.
The efficient solution for noise emission requires the cooperation and common maintenance strategy
of both, vehicle and infrastructure owners. This is a serious task because of possible negative effects
of noise on human health, life quality and productivity. This problem cannot be solved by appealing to
conscience and responsibility of infrastructure owners and vehicle owners. The way to solve this
problem is to define legal and technical regulations in the field of railway noise control.
In this sense, it is necessary to harmonize national legal and technical regulations with EU regulations
in the area "Railway applications". Harmonization of regulations is a process that must include
education of professionals for railway infrastructure and rolling stock in the area of actual application of
regulations on railway. This is a necessary condition for the realization of the idea of interoperability of
railway systems across Europe and beyond.
Belgrade, 2012 262