No intelligence system can predict what a government will do if it doesn't know itself. An appropriations bill is the spending bill for a category of funds for an individual year.
Appropriations bills encompass many authorized programs.
The transportation appropriations bill is not required to provide the levels of funding suggested by the authorizing legislation although it often does. Frequently, disagreements occur because the appropriations committee does not provide the same levels of funding as suggested by the authorizing legislation. The budget resolution is a five-year spending guide for Congress. However, this agreement does set a framework for both the appropriations and authorization committees for spending within the legislation that they consider. The budget resolution also can make policy assumptions for the term of the agreement.