TY JOUR TI On the determination of driving modes and performance logging road trains KW trailer KW effort KW technique KW speed KW logging roads. JO Actual directions of scientific researches of the XXI century: theory and practice AU Ermolov, Y.. AU Chernikov, E.A. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov