The assessment of noise levels, in the proximity of a building or on its fac¸ade, is a requirement of the European Environmental Noise
Directive 2002/49/EC concerning environmental noise produced by road and railway traffic, airports and industries. The corrected values
for the noise levels and the problems of measuring noise near a fac¸ade are discussed here for the case of road traffic. A complete set of
measurements in different situations was performed along several roads in an urban environment as well as in a controlled situation using
a loudspeaker. The experimental results are then compared against theoretical models and international standards, in particular those
that suggest to use a +3 or +6 dB correction as a function of the microphone position and the NordTest method. Some suggestions
are given for the different corrective factors to apply when measuring environmental noise between 0 and 2 m away from a building fac¸-
ade, and practical solutions identified.JRC.I.5-Physical and chemical exposure