Noise level study and assessment in the southern part of Panevėžys

Abstract

Noise is a relevant problem faced not only by Lithuania but across the world. With motor traffic flow increase, the noise caused by them is also growing and in particular noisy are heavy vehicles and motorcycles. Noise measurements were taken near the main streets in the southern part of Panevėţys. Measurements were made during three time periods of the day: in the daytime (from 6 a.m. to 6 p.m.), in the evening (from 6 p.m. to 10 p.m.) and at night (from 10 p.m. to 6 a.m.). In this part of the city noise is mainly generated by cars. The measured noise levels were compared with the noise level limit (NLL) in the measurement places where the NLL is most often exceeded. Noise level analysis and traffic flows are presented in the work. As the performed measurements show, the NLL in the daytime was exceeded by 65%, in the evening by 88%, and at night by 71% of all the total measurements made. The equivalent NLL was exceeded by up to 14 dBA and the maximum NLL – by up to 17 dBA. The highest excess of the NLL was recorded by streets with the heav-iest traffic.

Triukšmas – ne tik Lietuvoje, bet ir visame pasaulyje aktuali problema. Automobilių srautams vis labiau didėjant, didėja ir jų keliamas triukšmas, ypač triukšmingi yra sunkvežimiai ir motociklai. Triukšmo tyrimai atlikti Panevėžio pietinėje dalyje prie pagrindinių gatvių. Matavimai vyko skirtingu paros laiku: dieną 6–18 val., vakare 18–22 val. ir naktį 22–6 valandomis. Šioje miesto dalyje pagrindinė triukšmo priežastis – automobiliai. Triukšmo lygis, išmatuotas vietose, kuriose dažniausiai viršijamas, lyginamas su leidžiamosiomis normomis. Atlikta triukšmo lygių ir transporto srautų analizė. Iš duomenų matyti, kad leidžiamasis triukšmo lygis dieną viršytas 65 %, vakare 88 %, o naktį – 71 % atliktų matavimų. Ekvivalentinis triukšmo lygis viršytas iki 14 dBA, o maksimalusis leidžiamasis – iki 17 dB. Labiausiai triukšmo lygis viršijamas prie gatvių, kuriose pravažiuoja daugiausia automobilių.