(a) Consultation means government-to-government communication in a timely manner by all parties about a proposed or contemplated decision in order to:
(1) Secure meaningful tribal input and involvement in the decision-making process; and
(2) Advise the tribe of the final decision and provide an explanation.
(b) Collaboration means that all parties involved in carrying out planning and project development work together in a timely manner to achieve a common goal or objective.
(c) Coordination means that each party:
(1) Shares and compares in a timely manner its transportation plans, programs, projects, and schedules with the related plans, programs, projects, and schedules of the other parties; and
(2) Adjusts its plans, programs, projects, and schedules to optimize the efficient and consistent delivery of transportation projects and services.