Suppose it is necessary to run the NB and SB movements in a split-phase configuration (with timing stage 3 for SB movements and a new timing stage 4 for NB movements). Calculate the sum of the flow ratios for the critical lane groups and total cycle lost time for this situation, assuming that the EB and WB movement phasing remains the same. Table 7.3 summarizes the calculation of the flow ratios and the identification of the critical lane groups.