Select the applicable Systems Engineering Process in the procurement of ITS.
Experience from a review of ITS contracting methods and practices. Step 5 of the Decision Model.
Observations regarding the use of systems engineering processes are presented as follows:
- Utilize the waterfall approach for acquisitions of well-defined, mature technology. The waterfall model is most suited to highway design and construction processes, where the steps of planning, design and implementation are performed sequentially. This model is used for less complex ITS projects and can be applied under all agency capability levels.
- Utilize the evolutionary approach for all but the simplest of systems development projects. The evolutionary approach involves a series of phases. It is suited for all agency capability levels and for most systems development projects.
- Utilize the spiral approach when new technological capabilities are being implemented. The spiral method is appropriate when new, previously untested capabilities are being developed. This model involves multiple phases of planning, prototyping and evaluation. Given the significant resources required for this model, it is recommended for level 3 agencies that have experienced, full time ITS managers. This model is most commonly used by the Department of Defense and NASA, and is mainly used by the ITS community for the development of advanced systems, such as in-vehicle safety systems.
Average User Rating