{"data":{"id":"us-mt/15-70-431","jurisdiction":"us-mt","citation":"15-70-431","heading":"Determination of highway use.","body":"Highway use for each vehicle is determined by dividing the rate of the average miles per gallon into the number of miles traveled on public roads. When records are not available, an average of 4 miles per gallon or other methods that have been found acceptable may be used by the department to determine fuel use.","path":["TITLE 15. TAXATION","CHAPTER 70. GASOLINE AND VEHICLE FUELS TAXES","Part 4. Gasoline and Special Fuel Tax"],"source_url":"https://mca.legmt.gov/bills/mca/title_0150/chapter_0700/part_0040/section_0310/0150-0700-0040-0310.html","current_through":"Montana Code Annotated 2025","vintage":"","retrieved_at":"2026-09-14T04:47:54Z","sha256":"6f082eba8af8c0436ac5b48e972fca4b9ed71d2cc128dc114bd342428763ae97","source_id":"us-mt","stale":false,"prev":"us-mt/15-70-430","next":"us-mt/15-70-432"},"notice":"GroundRules: Original legal text. Not legal advice."}