Obama's jobs bill: building North America's light rail systems

The economist Keynes thoughts on infrastructure spending included that the final product would reduce costs for society
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Stimulus spending creates construction jobs, more importantly it creates infrastructure that provides benefits for all micro participants in perpetuity. Cheap access to light rail is a significant advantage to a local economy. Unique opportunity to do something big. Reduced transportation costs and reduced car expenses builds society's wealth. For example cheap access to light rail provides benefits to students etc. and increases spending elsewhere.

notes to reduce light rail construction costs. Construction costs are wasted in renting excavators. Can own a few excavators and take longer, but cheaper to construct. Slogan: take twice as long to build but at half the construction cost. Design: types and size of trains used to build a local train fleet are also important to access transporation utility functions.