Traffic Noise Propagating from Vibration of Railway Wagon

Table 3

Sound pressure levels at 1/3 octave over leading and trailing pivot at 15 m.

Frequency; (Hz)	Lat.pres.over; ldg.pivot (15 m, dB)	Lat.pres.over; ldg.pivot (15 m, dB)	Vert.pres.over; ldg.pivot (15 m, dB)	Vert.pres.over; tlg.pivot (15 m, dB)	Combined; noise level (15 m, dB)	Combined; noise level (15 m, dBA)
20	82.1	55.3	80.6	75.2	84.2	33.7
25	70.0	54.7	71.1	62.2	73.5	28.8
31.5	75.3	58.4	75.5	60.7	78.5	39.1
40	69.8	44.0	65.4	46.0	71.1	36.5
50	64.2	69.6	70.7	58.9	73.7	43.5
63	69.3	42.9	71.8	59.2	73.7	47.5
80	65.5	47.2	68.1	54.8	70.0	47.5
100	69.7	46.2	66.4	51.3	71.3	52.2
125	72.0	54.5	70.4	55.9	74.3	58.2
160	62.0	39.1	51.5	14.2	62.4	49.0
200	67.9	46.2	55.3	38.1	67.9	57.0
250	64.2	42.5	52.8	32.9	64.2	55.6
315	56.6	36.3	45.7	21.1	56.7	50.1
400	75.0	53.9	63.5	39.6	75.1	70.3
500	61.8	40.6	47.7	22.7	61.8	58.6
625	57.1	35.7	49.8	19.9	57.8	55.9
800	70.2	48.8	58.1	35.2	70.2	69.4
1000	60.5	39.4	47.9	23.5	60.5	60.5
Overall noise level					85.1	72.9