PROJECT DESCRIPTION
BACKGROUND
Railways are a significant cause of environmental noise pollution in Latvia and further afield. Increasing volumes of rail freight traffic and urbanisation are both having a negative impact. Moreover, surveys indicate that railways are the third most bothersome noise source and a cause of acoustic discomfort. Considering that cargo and passenger traffic circulates on rail 24-hours a day, sustained long-term exposure to noise may result in such health problems as sleep or central nervous system disorders, decrease in operational capacity, physiological and psychological disorders, and deviations in social behaviour. Noise can also have an negative impact on pets and wildlife. Data from a 2008 noise map of Riga showed that the emissions of noise created by rail infrastructure exceed the permitted noise level per day (Lday) in corresponding built-up areas on average by 5 dB(A) or 8%, and in some places the permitted noise level was exceeded by 15 dB(A) or 25%. At night, the permitted noise level (Lnight) from railways in corresponding built-up areas was exceeded by 10-15 dB (A) or 20-30%; in some places it exceeded 25 dB(A) or 50%.
OBJECTIVES
The goal of the ISRNM project was to demonstrate a new means of reducing rail noise pollution and to adapt and apply the Dutch “Reken en Meetvoorschrift Railverkeerslawaai ‘96” (RMR) method for estimating noise from Europe's railways. The project would also test technologies for noise reduction and methods for protection against and reduction of rail noise. The technical activities of the project would be implemented in an urban environment, thus ensuring an acoustically favourable living environment for residents near rail lines in Riga.
Specific objectives were to:
Expected results
RESULTS
The foreseen objectives of the project were not reached, except for the development of the evaluation of effectiveness of rail noise assessment method RMR and the related guidelines for the improvements. The foreseen objectives of the project were not reached, except for the development of the evaluation of effectiveness of rail noise assessment method RMR and the related guidelines for the improvements.