TY JOUR TI DYNAMICS OF INDEXES OF ACCIDENT RATE PASSENGER TRANSPORT IN SAINT-PETERSBURG KW city transport KW safety KW passenger transportations JO Problems of risk management in the technosphere AU Vas'kov, V.T. AU Harlashkin, S.V. AU Tarantsev, A.A. PY 2016 IS 2016 PB Saint-Petersburg University of State Fire Service of Emercom of Russia