Apply differentiators to select the appropriate procurement package for any ITS project.
Experience from a review of ITS contracting methods and practices. Step 6 of the Decision Model.
More specifically, the differentiators include the following set of observations:
- Utilize a systems manager rather than a design-build approach when new software development is required.
- Utilize design-build (rather than systems manager) when a significant amount of field construction is involved, and there is a desire to reduce implementation delays associated with having to administer multiple contracts.
- Utilize the evolutionary systems engineering model to the extent that it is possible. Utilize the spiral model for complex, untested, new developments.
- Split a project into multiple contracts if it includes both new field construction and new software.
- Utilize low bid contracting only if projects are limited to field construction and supply of off-the-shelf equipment. Low bid procurement is applicable only to extremely well defined projects.
- Utilize commodity procurement if an existing ITS package is available that does not require any modification to meet agency requirements. Examples of exceptions are new drivers for interface with communications and field equipment; a new database reflecting system configurations, and new map graphics.
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