Table 1.

Distribution of the 90 sites included in the road traffic noise monitoring.

Road Type	N. of Sites	N. of 24-h Time Series	N. of Lanes for Each Direction	Average Distance Microphone-Roadside [m]
A	2	15	3 (50.0%)	18.5
			4 (50.0%)	12.5
D	7	18	1 (28.6%)	5.5
			2 (14.3%)	7.0
			3 (42.8%)	7.0
			4 (14.3%)	4.5
E	29	83	1 (32.1%)	6.8
			2 (35.7%)	5.8
			3 (28.6%)	4.4
			4 (3.6%)	8.5
F	52	135	1 one way (30.0%)	9.0
			1 (56.0%)	10.5
			2 one way (2.0%)	6.5
			2 (12.0%)	13.0
Total	90	251