TY - BOOK ED - National Research Council (U.S.). TI - Twin trailer trucks: effects on highways and highway safety T2 - Special report SN - 0309040507 (pbk.) : AV - TL230 .T85 1986 U1 - 363.1259 19 PY - 1986/// CY - Washington, D.C. PB - Transportation Research Board, National Research Council KW - Tractor trailer combinations KW - Traffic safety KW - Roads N1 - Includes bibliographies ER -