The overall framework for carrying out an economic efficiency analysis on the basis of benefit and cost considerations is illustrated as Figure 8.4 of text book Transport and Decision Making (Principles of Project Evaluation and Programming) by Sinha and Labi 2007 Chapter 8, which is a synthesis of the procedures presented by Booz Allen Hamilton (1999) Cambridge Systematics (2000), and Forkenbrock and Weibrod (2001)
In4 paragraphs select the base case and transportation alternatives.
Step 3 Select and describe the Base Case and the other Alternatives.
(a) Base Case - The base cass should be chosen such as it allows a realisics representation of past, current, or possible future conditions. A base can be "do-nothing" or the current condition, or the least-cost option under future conditions.
(b) Alternative Scenario-The base case and alternative scenarios may differ by travel mode, facility type, service trype facility location (in terms of setting, routing, or alignment) facility or service size (in terms of capacity and cost), area served or the expected change in the level or quality of service to be provided by the facility or service.
Must be done in APA format with all citations and references.