25 CFR 170.410 - What is the purpose of tribal long-range transportation planning?
(a) The purpose of long-range transportation planning is to clearly demonstrate a tribe's transportation needs and to fulfill tribal goals by developing strategies to meet these needs. These strategies should address future land use, economic development, traffic demand, public safety, and health and social needs.
(b) The time horizon for long-range transportation planning should be 20 years to match state transportation planning horizons. A tribe may develop a long-range transportation plan under ISDEAA or may ask BIA to develop the plan on the tribe's behalf.