TY  JOUR
TI  A historical introduction to the sound signalling on railway transport
KW  sound signals of locomotives
KW  the distance of propagation of sound signals above the earth’s surface and above the railway tracks
KW  speciﬁc trafﬁc noise
KW  masking of sound signals by speciﬁc trafﬁc noise
KW  determination of the optimal frequency of the sound signals of locomotives
JO  Transport automation research
AU  Zaltsman, G..
AU  Pronin, A..
PY  2018
IS  4
PB  FSBEI HE &quot;Emperor Alexander I St. Petersburg State Transport University&quot;