A Transit Development Plan (TDP) is a Georgia Department of Transportation (GDOT) required, 10-year horizon plan intended to support the development of an effective multi-modal transportation system for the State. The TDP serves as the basis for defining public transit needs, which is a prerequisite to receipt of federal and state funding. TDPs are intended to serve as strategic planning documents. They define public transportation needs; solicit broad input by coordinating with other plans; involve substantial public participation, and explore community goals with decision-makers and other stakeholders; define alternative courses of action; and develop a systematic plan and monitoring program.