Traffic Noise Propagating from Vibration of Railway Wagon

Table 2

Lateral and vertical sound levels at 1/3 octave over leading and trailing pivot.

Frequency (Hz)	Lat.pres.over ldg.pivot (dB)	Lat.pres.over tlg.pivot (dB)	Vert.pres.over ldg.pivot (dB)	Vert.pres.over tlg.pivot (dB)
20	105.7	79.0	104.2	98.9
25	92.1	76.8	93.2	84.2
31.5	97.8	60.3	97.4	82.6
40	91.7	66.0	87.4	68.0
50	84.8	70.2	91.3	79.5
63	89.8	63.0	91.9	79.4
80	83.6	64.9	85.9	72.6
100	82.6	59.1	79.3	64.1
125	78.4	60.9	76.8	62.3
160	78.2	55.3	67.7	30.4
200	76.0	54.3	63.4	46.1
250	74.1	52.4	62.7	42.8
315	71.8	50.9	60.3	35.7
400	70.1	49.0	58.6	36.1
500	68.5	47.3	56.4	31.6
625	67.2	45.9	54.4	32.1
800	66.1	44.6	54.0	31.0
1,000	65.4	44.3	52.8	28.5