TAC on SPCL should give a methodology for compilation of CPI of rural and urban areas separately using quinquennial NSS Consumer Expenditure Survey Data for the preparation of the weighting diagram. TAC should also give a procedure for compiling a combined index based on these two indices.
The existing system of price data collection should be suitably streamlined and augmented so as to provide price data for compilation of CPI for rural and urban areas.”  BIS Review 125/2007  7  V.  Instruments and transmission of monetary policy: dynamics  The instruments that the central bank uses in day-to-day implementation of monetary policy can be broadly classified into direct and indirect instruments.