Sub-problem 2c: Analysis of the South Section of Krome Avenue (Class I Signalized Arterial Facility)

Sensitivity Analysis
Using an established growth rate of 2.4%, we can now project the years in which the traffic volumes will cross the various LOS thresholds. Based on these volume projections, we can estimate that:

Note that these projections assume no changes in any of the operating parameters within the timeframe of this analysis. It must be recognized that some of the parameters could change as a result of increased traffic volumes. For example, the g/c ratios could be reduced if protected left-turn phases are required on approaches that currently have no protected left turns.

Summary Discussion
As pointed out at the beginning of this problem, it is important to realize that the planning tables we applied here were created on the basis of some very specific assumptions about traffic characteristics. The tables were originally intended to serve as examples only within the HCM, and so it is important for the user to remember that they are unlikely to give accurate results if real-world conditions vary significantly from the inherent underlying assumptions. Even so, this problem offered an opportunity to demonstrate how the tables can be used in situations where actual conditions approximate the underlying assumptions.