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A framework for urban transport studies (Inglês)

A framework for conducting urban transportation studies as part of larger urban projects is developed. A three-step urban transportation study method is proposed: 1) establisment of a general land-use development plan; 2) analysis of transportation supply and demand; and 3) evaluation of individual projects. The final step plays a key role in the general framework, because it is the only point at which rigorous quantitative analysis is performed. Analysis of project benefits is applied to four types of benefit: economic efficiency, income distribution, environmental effects, and responsiveness to unpredictable events. The economic efficiency benefit, the most readily quantifiable of these, can be measured by variables associated with the project alone. In estimating the benefit, the pricing policy must be explicitly considered as it affects the composition of consumers' and producers' surpluses that are to be included in the benefit. In conclusion, the use of complex analytical models should be avoided in urban transportation analysis for developing countries, significant variables and relationships should be identified, and the scope should be limited.




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