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How loud is Bacau, Romania?

In Bacau, Romania, most noise-exposed residents face average day-evening-night (Lden) transport noise of 55–75 dB, mostly from road traffic, dropping to 50–65 dB at night. That ranks Bacau #2 of 314 European cities by measured EEA exposure, above the European median.

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Noise map of Bacau, Romania: road-traffic noise contours from the EU strategic noise maps, shaded yellow (≈55 dB Lden) through orange and red to dark purple (≈75 dB+), over the city's street network.
Bacau's road-traffic noise, mapped: each band is a measured Lden contour from the EU Environmental Noise Directive (2022 round) — yellow ≈55 dB rising to dark purple ≈75 dB+. Basemap © OpenStreetMap contributors, © CARTO.
Bacau at a glance (measured EEA data)
European rank (of 314) #2
Daytime Lden range 55–75 dB
Night Lnight range 50–65 dB
vs. WHO guideline ≈ 12 dB above the 53 dB Lden road-noise guideline (night guideline: 45 dB)
Dominant source road traffic
Population 136,087
Data confidence high

Bacau houses 136,087 people. Its noise-exposed residents experience Lden levels of 55–75 dB by day and 50–65 dB at night, driven mainly by road traffic, which puts it #2 of 314 in the measured European ranking — above the European median. Among Romania's 6 ranked agglomerations, Bacau is the 1st-loudest. Across Europe it sits just below Terni, Italy (#1) and just above Messina, Italy (#3).

The WHO road-traffic guideline is 53 dB Lden by day and 45 dB Lnight at night, so Bacau's exposed residents run roughly 12 dB above the daytime guideline. The figures count road, rail, aircraft and industry only, so sirens, nightlife and construction sit outside the model — which is why measured exposure can differ from a city's reputation for noise.

These are measured values, not estimates: they come from Romania's strategic noise maps reported under the EU Environmental Noise Directive (2022 round) and harmonised by the European Environment Agency. Lden is the annual-average day-evening-night level; only people above the 55 dB Lden reporting threshold are counted, so the range describes the noise-exposed population, not the city's quietest streets.

Bacau noise: the numbers

  • Ranks #2 of 314 European cities by measured day-evening-night (Lden) transport-noise exposure.
  • Exposed residents face Lden 55–75 dB by day and Lnight 50–65 dB at night.
  • Dominant noise source: road traffic. Population 136,087.
  • The 1st-loudest of Romania's 6 ranked agglomerations.

These are measured values from the EU Environmental Noise Directive strategic noise maps (2022 round), harmonised by the European Environment Agency — see the methodology on the European city ranking. Lden is the annual-average day-evening-night level; only residents above the 55 dB Lden threshold are reported.

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