Phase Time Determination:

It is also possible to apportion the cycle time among the three phases in a manner that would equalize the degree of saturation among the critical movements on each phase. Normally this step would only be included if we had confidence in the accuracy of the input data, which is seldom the case with 20-year volume projections. If we were using current data here instead of the 20-year projections, we might be interested in looking into the actual performance of the intersection for implementation purposes. We will not show the phase time determination in this exercise since we are only interested in the overall sufficiency of the operation.