Okla. Stat. tit. 69, § 69-1729: Determination of amount of fuel consumed on turnpikes

In determining the amount of motor fuel consumed on the Oklahoma

turnpike projects each month, the Oklahoma Tax Commission shall

divide the total miles traveled on the turnpikes by passenger

automobiles, single unit trucks, and combination trucks and buses as

certified each month by the Authority, by the average number of

miles per gallon of motor fuel consumed by each of those classes of

motor vehicles. For the purpose of this section and the following

section, the Oklahoma Tax Commission shall use the following rates

for motor fuel consumed on the Oklahoma Turnpikes: