TY - BOOK ED - Organisation for Economic Co-operation and Development. Road Research Group ED - Organisation for Economic Co-operation and Development. Road Research Group TI - Optimisation of bus operation in urban areas U1 - 388.1 PY - 1972/// CY - Paris PB - Organisation for Economic Co-operation and Development. Road Research Group KW - City traffic KW - Highway research N1 - A report prepared by an OECD Road Research Group ER -