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Presents Evidence-Based Guidance on Noise Abatement Methods Solutions for reducing the noise impact of road and rail traffic can be found in the use of natural elements in combination with artificial elements in urban and rural environments.
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- Materials to reduce and absorb sound Archives - Ljudplanering
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Under this legislation, Technical Specifications for Interoperability TSIs are established, which include noise limits. Within the operability framework, emission limits regarding the noise of high speed trains and conventional trains have been set. These limits apply to new or upgraded rolling stock. Noise mapping aims to determine the level of environmental noise pollution throughout measurement, assessment and mapping of sound levels from different sources, including road traffic and railroad transport.
Sound levels need to be monitored at different areas and are used for planning activities. Modernization and expansion of transport network, and the adaptation of vehicles to specific requirements must not be based solely on the process of creation of transport network and increasing its capacity.
Materials to reduce and absorb sound Archives - Ljudplanering
It is important, but it must go hand in hand with improved safety and environmental protection, and must stay in line with legal requirements as it was discussed by many authors [1, 35]. Assessing the level of sustainability alignment is a difficult task. This is mainly due to a number of economic, social and environmental factors that must be taken into account. Sustainable transport development should meet the social needs for mobility and freight transport and at the same time prevent detrimental impact of transport on the environment.
Shaping the environmentally friendly transport system must take into account the relationship between structure of transport network, its parameters and the impact of transport activities on the environment. Assuming that demand for transport is satisfied not discussed in this paper , ecological efficiency of transport system development can be expressed by set of criteria basing on external costs of transport activity related to noise and exhaust pollution, accidents and congestion.
Indexes to assess those effects must use hard data for unit costs and emission standards of different types and data about traffic distribution and management. On the ground of environmental and social influence, indicators for assessing ecological efficiency of transport system related to external costs should embrace effects of :. For the purposes of formalizing the indicators of ecological efficiency of transport system, the following markings are introduced:.
Congestion lengthens passengers and freight transport over the time for unloaded network free flow. This means that passengers are overloading their time for transport instead of leisure or production. Formally, for evaluation of congestion effects, it is important to distinguish between the type of transport and the motivation of the journey or group of goods.
Lengthening of transport time due to congestion can be expressed as follows:. Another negative environmental impact of transport is the emission of harmful compounds of exhaust gases.
The level of emission depends on traffic velocity conditioned by its intensity, type of vehicle and its engine — including the compliant emission standard and distance shortest trips generate higher emission. According to that, pollutant emission is defined as follows:. In line with previous observations, external costs of transport embrace costs resulting from noise emission. They are directly related to the noise emitted and to the number of people exposed to noise and their sensitivity to noise.
According to the results of the studies, the percentage of people irritated by noise is strongly dependent on noise levels.
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It should be noted that the problem of estimating traffic noise is extremely complex and depends on a number of factors, including: traffic intensity, traffic structure, traffic flow velocity, distance from roadways, sound and noise barriers, and the angle in which the observation is conducted. Taking into above, sound intensity of vehicles of a given type is determined according to the following FHWA model,  :.
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It was assumed that services realized by transport system are its effects. On the other hand, the expenditure necessary for transport system functioning are manifested by the use of technical means and other resources, and are the cost of its operation. As a consequence, the basic indicator of transport efficiency is the quotient of transport output expressed in provided transport services and the costs of operation direct only.
If operating costs of transport system can be decomposed to the costs of the passenger subsystem and freight subsystem, the analytical form of the economic efficiency index of the transport is as follows:. The analyses are based on traffic model developed in , and historical data for , for morning and afternoon peaks. The demand model provides information on the transport needs identified for the traffic flow units included in the model.
The model mainly operates on comodality of road and rail modes. Vehicles for passenger road transport are grouped into following categories: motorbikes, cars, minibuses passengers , buses passengers , buses and vehicles with more than 45 seats. Heavy goods vehicles were divided into light vehicles with up to 3,5 t and heavy trucks up to 24 tons. PTV VISUM model was used for scenario analyses of traffic distribution to determine traffic on particular sections of transport network, and then use that data for estimating noise emissions see  or .
Total time lost in passenger and freight transport are summarized in Table 4, while the structure of transport network according to noise level for selected distances from the road axle are gathered in Tables 5 and 6. Table 4. Loss of time in suburban road traffic in Mazowieckie voivodeship in passenger-hours and tonne-hours. Table 5. As shown in Table 4, the total loss of time in both passenger and freight transport in suburban traffic in Mazowieckie voivodeship is high. In passenger traffic, during morning peak two hours and the afternoon peak two hours total loss of time exceeds respectively 70 thousand hours and 59 thousand.
These losses are mainly attributable to access roads to larger urban centres Figs. Loss of time per km of the road network of the Mazowieckie voivodeship in for passenger and freight transport during morning peak. Loss of time per km of the road network of the Mazowieckie voivodeship in for passenger and freight transport during afternoon peak. A traffic noise neutral to health and comfort is less than 55 dB. Table 6.
Obviously, with increasing distance from the road axis, the noise intensity decreases gradually. Noise emission along the suburban segments of the Mazowieckie voivodeship road network in during morning peak. Total emission of harmful compounds of exhaust gases from road mode in evaluated transport system is presented in Table 7. Graphical representation of emission volumes is presented in Figs. Noise emission along the suburban segments of the Mazowieckie voivodeship road network in during afternoon peak.
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Pollutant emission along the suburban segments of the Mazowieckie voivodeship road network in during morning peak. Pollutant emission along the suburban segments of the Mazowieckie voivodeship road network in during afternoon peak. Table 7. Pollutant emission in Mazowieckie voivodeship by suburban traffic [g]. The development of an ecologically efficient transport system aims to reduce the environmental degradation caused by transport-related noise and pollution. European Union regulations are meaningful and strict in that area and tends are to tighten up the rules.
Therefore, when planning the development of transport system, total cost of transport activities must be supplemented by external costs of negative environmental effects. Internalization of external costs of transport must be a fundament of transport policies. The FHWA method applied to predict a noise generated by constant speed highway traffic on the base of traffic distribution in Mazovieckie voivodeship transport network is an example of that combination.
The FHWA method incorporates three classes of vehicles — automobiles, medium trucks, and heavy trucks. Adjustments for absorptive ground covers and finite length barriers are also included. These are simple assumptions ready for use in large-scale transport system like analysed transport network. The methodology has proven its usefulness, and when combined with air pollution estimation will provide a complex tool for planning proecological transport systems.
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This is an open access article distributed under the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Views Reads Downloads Petersburg, Russia. Introduction Transport related environmental pollution has many faces, but two of them are especially onerous: emission of harmful compounds of exhaust gases and vibroacoustic effects with particular significance of noise.
Instruments of internalization of transport external costs Types of external effects.
Negative influence of transport-related noise on health and environment 2. Noise pollution Valuing the health effects of traffic noise requires methods to express noise effects in monetary values. Illustrative average noise costs for German motorways, Euro per vkm Vehicle type. Selected effects of traffic management measures on noise reduction Traffic management method.