The reported sound levels shall be those resulting from the mode with the highest sound levels.

Noise levels of moving vehicle

L10 sound levels are the sound levels exceeded 10% of the time.

The limit values for the specific external sound levels shall not exceed the following levels

The sound levels in decibels dB(A) are given the index A.

n is the measurement number (n ≥ 16

n is the measurement number (n ≥ 16

Acoustic Noise is measured based on ISO7779 standard.

is the mean value of the rolling sound levels Li, measured in db(A

General requirements on pollutant emissions and external sound levels

is the mean value of the rolling sound levels Li, measured in db(A

Acoustic Noise is measured based on ISO7779 standard.

Download the calculator "Add several noise levels

with the intention to boost their sound to “unprecedented” levels by the standards

The working hours are an essential input for the calculation of noise levels.