AZ HB2147

Amends A.R.S. §48-5308 to change the distribution to regional council of governments from a fixed three hundred thousand dollars to one percent of transportation excise tax revenues collected under section 42-6106.

Modifies A.R.S. §48-5309 to add definitions for "present worth" using a five-year average GDP price deflator and "substantial change" to regional transportation plans, with detailed thresholds for cost overruns (10% for single elements, 15% for two elements, 20% for three or more elements).

Updates A.R.S. §48-5309 regarding plan amendments when voter approval fails, allowing the board to continue implementing the previously approved plan and making expenditures within available revenues rather than prohibiting all expenditures obligated before the election.

Modifies A.R.S. §48-5313 to clarify that the authority, cities, towns, and county each may exercise eminent domain powers for regional transportation purposes and may purchase property acquired through eminent domain proceedings.