ABSTRACT
Change due to population growth and demographics are factors that need to be considered in a business plans and program plans. The world population is changing rapidly, which impacts the basic assumptions behind virtually all long-term analyses and any life cycle cost activities that are related in any way to population, consumers, demand, economic growth, and the like. In addition, the demographics of each city with a station were important. The distances that people lived from the stations were an important determinant in the overall analysis and for this aspect very detailed demographic data were used in the analysis, similar to that used to determine legislative districts within a county. The very simple model assumes the people in the population are all likely train riders and only population and distance are the determinants. The important message is that understanding changes in populations and demographics is important.
