The Transportation and Accessibility Tasks are defined somewhat uniquely in the Real Estate Development Matrix. The accessibility dilemma may be summarized by the old saying, "A good location, but hard to get to." The on-site accessibility issues are related to the mode of transportation that brought the goods, services, or people to the site in the first place. Air transport systems usually revolve around airports and the other complementary transit systems like highways and railways. Trails and paths for pedestrians and bicycles are becoming very popular commuter transit ways, as well as recreational opportunities. Intermodal hubs are the industrial/commercial equivalent of the residential/commercial transit-oriented developments. The maintenance costs of government owned or leased transportation and accessibility facilities can be very high because of unreasonable expectations or over-reaching lease specifications. Transportation and accessibility improvements will eventually wear out and must be replaced or renovated. At that time, cash reserves should be available to fund the cost of the replacements.