DPR is the study that includes detailed design of the railway routes, the infrastructure required alongside the track, cost estimate and bid documents for construction based on the existing and predicted travel demand, demographic features etc. The DPR should be prepared carefully and with sufficient details to ensure appraisal, approval and subsequent project implementation in a timely and efficient manner. Preparation of DPR is a costly and time-taking process as all relevant aspects of the project are considered in the DPR. It includes
Thus, formulation of investment is based on the studies is made. These can be considered as pre-investment decision. Detailed project report preparation is not only for the investment decision-making approval, but also execution of the project and detailing of the plan. Detailed project report additionally includes the contents in addition to Feasibility study reports are.