| Revision Date | Section No. | Subject |
| October 2005 | 1.3.3.10 | Disposition of Surplus (Revised) |
| October 2005 | 4.6.4 | Unsolicited Proposals (New) |
| October 2005 | 7.2.4 | Prompt Payment Mechanisms (Revised) |
| October 2005 | 7.3.5.4 | Good Faith Efforts to Meet Contract Goals (Revised) |
| October 2005 | 7.3.5.5 | Counting DBE Participation Toward the Goal (Revised) |
| October 2005 | Appendix A.1 #28 Disadvantaged Business Enterprise | Federally Required and Other Model Contract Clauses (Revised) |
| April 2005 | 2.3.2 | Independent Grantee Cost Estimate (Revised) |
| April 2005 | 2.4.3.1 | Fixed Price Contracts (Revised) |
| April 2005 | 2.4.4.3 | Progress Payments (Revised) |
| April 2005 | 5.3.2 | Defriefing of Offerors (Revised) |
| April 2005 | 6.1.7 | Partnering (Revised) |
| April 2005 | 8.2 | Surety Bonds (Revised) |
| April 2005 | 8.2.1 | Performance Bonds (Revised) |
| April 2005 | 2.4.4.3 | Progress Payments (Revised) |
| April 2005 | 10.3 | Record Retention (Revised) |
| March 2004 | 1.3.3.5 | Intergovernmental Agreements, Joint Procurements, Piggybacking/Assignments (Revised) |
| March 2004 | 4.4.3 | Single Bid (Revised) |
| March 2004 | 6.5 | Architect-Engineering Services (Revised) |
| March 2004 | Appendix A.2 | Dear Colleague Letters (Revised) |
| November 2003 | 1.1.1 | FTA Circular 4220.1E (Revised) |
| November 2003 | 1.1.7 | FTA Procurement System Reviews (New) |
| November 2003 | 1.1.9 | Procurement System Self Assessment Guide (New) |
| November 2003 | 1.3.3.4 | Real Estate Contracts (Revised) |
| November 2003 | 1.3.3.11 | Operating Assistance, Preventive Maintenance, CMAQ and JARC Project (Revised) |
| November 2003 | 4.1.2 | Consolidation of Micro-Purchases (New) |
| November 2003 | 4.3.2.4 | Pre-Bid and Pre-Proposal Conferences (Revised) |
| November 2003 | 4.3.3.2.2 | Buy America Certification (Revised) |
| November 2003 | 4.5.2 | Evaluatin of Proposals (Revised) |
| November 2003 | 6.6 | Insurance (Revised) |
| November 2003 | 9.4 | Approval of Subcontractors (formerly Section 5.1.5) |