A. For operational service contracts such as the one you describe we believe the best approach is an RFP, rather than a sealed bid. The agency needs to evaluate the relative strengths and weaknesses of the companies proposing to furnish the services and choose the company that offers the "best value" to the agency, considering both price and technical qualifications, such as past performance on similar programs, quality of vehicles, etc. The services being offered by various companies will vary qualitatively and thus are not ideally suited to a sealed bid selection which requires a high degree of uniformity in the quality of the item or service being procured, which in turn requires specifications sufficiently precise to define and ensure uniform quality. The FTA Procurement Circular 4220.1F, Chapter VI, and paragraph 3.d. discusses RFP procurements and may be found at: http://www.fta.dot.gov/documents/FTA_Circular_4220.1F_-_Finalpub1.pdf (Revised: May 2010)