Proposition 141 (2026): Vehicle mileage taxes and monitoring

Election: November 3, 2026
Jurisdiction: State of Arizona
Status: Pending as of October 23, 2026
Legislative source: SCR 1004 (2025)

What the proposition proposes

A proposed amendment to the Arizona Constitution governing taxes calculated from driving mileage and government monitoring or restrictions of miles driven.

At a glance

• Arizona constitutional amendment, SCR 1004 (2025).
• Restricts mileage-based vehicle taxes, mileage monitoring and mileage limits without voluntary consent.
• Includes exceptions for specified interstate commercial vehicle arrangements and government-operated vehicles.

What a yes or no vote means

What the law currently does

Arizona currently has no corresponding constitutional prohibition on governments imposing taxes or fees based specifically on miles driven. Existing vehicle-related taxes and laws are separate subjects.

Important legal and implementation details

• The restrictions would apply to the state and to counties, cities, towns and other political subdivisions.
• The proposal concerns tracking or limiting vehicle mileage. It does not expressly abolish automated license plate readers, traffic cameras or other surveillance technologies. Those systems must be analyzed under their own legal authorities.
• The text includes exceptions involving certain interstate commercial vehicle reporting and government vehicles.

Provisions that deserve closer attention

What counts as mileage monitoring matters. The proposed language concerns monitoring or limiting the number of miles driven. A roadside camera photographing a license plate is not automatically equivalent to a system that calculates distance traveled. Whether a particular technology is covered requires examination of what information is collected and how it is used.

Existing transportation revenue is a separate issue. The proposition does not repeal motor-fuel taxes, vehicle-registration requirements or unrelated traffic laws. It addresses a potential tax or fee calculated from vehicle mileage.

The Legislative Council identifies exceptions for certain interstate commercial vehicles subject to reporting agreements and vehicles owned and operated by public governments. Those exceptions matter when assessing government fleets or interstate freight operations.

How this could affect West Valley communities

West Valley cities could not create a mileage-based vehicle tax or mileage-monitoring restriction contrary to the proposed amendment. Separate local policing, roadway monitoring and license-plate reading practices would still require independent scrutiny.

Distinguishing state, county and city effects

For Avondale, Tolleson, Surprise and other West Valley cities, the direct legal question is whether a proposed tax, fee or mileage-monitoring practice falls within the amendment’s wording.

Existing police camera contracts, ALPR databases and license-plate information-sharing agreements cannot simply be described as prohibited by this proposition. Those systems need their own legal and public-records review.

The separate measure concerning traffic-citation cameras is Proposition 319.

Financial and administrative considerations

The measure would limit a potential category of future transportation revenue. It does not provide a replacement funding source, and it does not establish a new appropriation.

What is known, and what is not

A future per-mile road-user charge could be unavailable to covered Arizona governments, but this proposal does not identify an existing municipal revenue source that would immediately disappear.

A city-specific fiscal estimate would need to identify current receipts from an actual mileage-based fee or a documented future proposal. Hypothetical revenue cannot be treated as money already included in a municipal budget.

The adopted analysis does not provide a replacement transportation funding appropriation.

Unresolved questions and records to examine

• Would particular proposed mileage-data collection programs qualify as monitoring within the measure?
• Which existing vehicle-data systems operate for purposes other than measuring mileage?
• How might future transportation funding proposals change if mileage fees were unavailable?

Official pamphlet reference: Proposition 141, printed page 38.

Source distinction: The ballot text and legislative or county documents are official sources. The local-impact discussion and open questions are OWVAZ analysis, not a stated government promise or verified spending outcome.

Not a ballot recommendation: This article explains the measure and its potential effects. It does not recommend a YES or NO vote.

Evidence needed for local verification

Relevant records include the purpose of any mileage-data program, the data it collects, whether it calculates distance, how consent is obtained, and whether the collected information is retained or shared.

For financial claims, distinguish an existing adopted revenue source from a possible future road-user charge.