Utah has pioneered a voluntary Road Usage Charge (RUC) program targeting electric, plug-in hybrid, and gasoline hybrid vehicles as an alternative to flat annual registration fees. The program allows low-mileage drivers to save money by paying per mile driven, while a payment cap ensures no participant pays more than the flat fee. This incremental approach has allowed Utah to test the technical and political viability of distance-based charging while building public acceptance for an eventual statewide transition planned by 2031.
1.11¢
per mile
2025 RUC rate
12,905
miles
Break-even point for EVs
60%
reduction
Admin costs since RUC 1.0
2031
target year
Full fleet enrollment plan
The paradigm of transportation funding in the United States is currently navigating a period of structural instability. For nearly a century, the per-gallon fuel tax served as the primary mechanism for generating the revenue required to construct, maintain, and operate the nation's vast network of highways and local roads. This system was founded on a simple, functional proxy: fuel consumption was directly proportional to road usage and, by extension, the wear and tear inflicted upon the infrastructure. However, the intersection of rapid technological advancement in vehicle propulsion and shifting federal environmental mandates has rendered this consumption-based model increasingly obsolete. As vehicles become more fuel-efficient and the market share of electric vehicles (EVs) continues its upward trajectory, the link between miles driven and gallons consumed has been severed. In Utah, this fiscal divergence has necessitated a proactive legislative and administrative pivot toward distance-based charging, formally known as the Road Usage Charge (RUC) program.
The necessity of the Utah RUC program is rooted in a looming deficit that characterizes both state and federal transportation budgets. The federal Highway Trust Fund (HTF), which accounts for roughly 83% of its revenue through fuel taxes as of 2023, is projected by the Congressional Budget Office to face a total shortfall of approximately $280 billion by 2034. This crisis is exacerbated by the fact that the federal gas tax has remained stagnant at 18.4 cents per gallon since 1993, losing more than 50% of its purchasing power due to inflation and rising construction costs.
Utah mirrors these national trends, although its fiscal position is somewhat mitigated by the strategic use of sales tax revenues. Approximately 27.5% of the state's sales tax is dedicated to the Transportation Investment Fund (TIF), providing a secondary pillar of support for capacity-increasing projects. Despite this, the state spends approximately $180 million annually just on road preservation, and the Utah Department of Transportation (UDOT) projects an additional $27 million annual requirement to meet the needs of a rapidly growing population. The emergence of high-efficiency gasoline hybrids and fully electric vehicles has created a situation where the revenue generated per mile traveled is plummeting even as the total number of miles traveled (and the resulting maintenance requirement) increases.
The structural decline of the fuel tax is clearly visible in Utah's recent revenue data. In 2018, gas tax revenue comprised 41.1% of state transportation revenue, but by fiscal year 2024, this share had dropped to 35.9%. For Utah, a state with an EV market share of nearly 10% (placing it among the top 20 states nationally for adoption), the fiscal pressure to find a fuel-neutral alternative is acute.
Funding gap
Utah's implementation of the RUC program represents a pioneering effort in policy incrementalism. Rather than attempting a disruptive, mandatory overhaul of the state's tax code, Utah opted for a voluntary, opt-in model focused initially on the alternative fuel vehicle sector. This strategy was designed to address the most immediate threat to the state's Transportation Fund (the total avoidance of fuel taxes by EV owners) while simultaneously creating a laboratory for testing the technical, administrative, and political viability of a per-mile fee. The resulting case study offers profound insights into the challenges of infrastructure finance in a post-carbon economy, the persistence of political constraints regarding data privacy, and the efficacy of market-based "nudges" in transitioning a populace from one tax regime to another.
The adoption of distance-based charging in Utah was not a singular event but a series of incremental legislative steps aimed at building a robust administrative framework while minimizing public friction. This path of "policy incrementalism" allowed the state to refine its approach based on real-world data and stakeholder feedback.
The legislative journey began in earnest with the passage of Senate Bill 136 (Transportation Governance Amendments) during the 2018 General Session. This bill addressed the "free rider" problem associated with alternative fuel vehicles by instituting a flat annual registration fee for EVs, plug-in hybrids (PHEVs), and gasoline hybrids (HEVs). This fee was intended to capture a portion of the contribution these vehicles would have made to the fuel tax. Crucially, SB 136 also mandated that UDOT implement a RUC demonstration program by January 1, 2020, offering these owners a choice: pay the flat fee or pay based on miles traveled.
Alternative fuel vehicle registration fees (Utah)
Electric (EV)
2019
$60.00
2020
$90.00
2021
$120.00
2025
$143.25
Plug-In Hybrid (PHEV)
2019
$26.00
2020
$39.00
2021
$52.00
2025
$62.25
Gas Hybrid (HEV)
2019
N/A
2020
$15.00
2021
$20.00
2025
$24.25
| Vehicle Type | 2019 Fee | 2020 Fee | 2021 Fee | 2025 Fee (Actual) |
|---|---|---|---|---|
| Electric (EV) | $60.00 | $90.00 | $120.00 | $143.25 |
| Plug-In Hybrid (PHEV) | $26.00 | $39.00 | $52.00 | $62.25 |
| Gas Hybrid (HEV) | N/A | $15.00 | $20.00 | $24.25 |
Sources: 2
In 2019, the legislature passed SB 72, which granted UDOT and the Utah Transportation Commission the necessary rulemaking authority to manage the program. This included establishing rules for enrollment, mileage reporting, and the use of third-party Commercial Account Managers (CAMs). It also mandated strict privacy protections for participants' data.
The scope of the program was significantly expanded by SB 150 in 2020. This legislation directed UDOT to prepare a long-term plan to enroll all qualified registered vehicles in the state (not just alternative fuel vehicles) into the RUC program by December 31, 2031. This marked the transition of the RUC from a localized pilot for EVs to the officially sanctioned future of all Utah transportation funding.
As the program currently operates, it serves as an optional alternative for a specific subset of the vehicle fleet. This targeted eligibility is a central feature of Utah's incremental approach, focusing on the vehicles that represent the most significant departure from the traditional fuel tax model.
Eligibility is presently restricted to alternative fuel vehicles that are subject to the additional annual registration fees. This scope ensures that the program is testing the technology on the most technologically advanced vehicles and their owners, who are often more receptive to digital reporting solutions.
Owners of these vehicles contribute zero state or federal gas tax. The RUC provides their only usage-based contribution to the Transportation Fund.
These vehicles can operate on electricity for short distances and gasoline for longer trips. Because they use significantly less gasoline than traditional ICE vehicles, their fuel tax contribution is insufficient to cover their road impact.
While they do not plug in, these vehicles achieve high MPG ratings, eroding the correlation between fuel consumption and road use. Utah includes them in the RUC eligibility pool to capture the revenue lost through high efficiency.
The UDOT expansion report, mandated by SB 150, outlines two distinct scenarios for moving the program beyond the alternative fuel sector to the broader state fleet of approximately 2.9 million vehicles.
UDOT expansion scenarios for statewide RUC
| Feature | Scenario A: Mass Implementation | Scenario B: Phased Technology Adoption |
|---|---|---|
| Initial Focus (2024) | All vehicles > 20 MPG | Vehicles > 30 MPG + EVs/Hybrids |
| Reporting Method | Manual Odometer Reading only | Mixed (Telematics + OBD-II + Manual) |
| Payment Model | Annual Lump Sum at registration | Pay-as-you-go |
| Expansion Pace | Rapid; 2M vehicles in 2024 | Gradual; biennial expansions |
| Full Enrollment Goal | 2030 (all vehicles) | 2032 (all vehicles) |
Source: 3
These scenarios reveal the trade-offs policymakers must consider. Scenario A generates revenue more quickly but risks public backlash due to the lack of choice and the requirement for a large, single-payment tax bill. Scenario B is more technologically complex and slower to reach full revenue potential but offers a smoother transition and more reporting flexibility for the user.
Utah has prioritized user experience and administrative efficiency in its technical architecture. By leveraging third-party technology providers, the state has been able to offer multiple reporting options that cater to different levels of technological comfort and privacy concerns.
The program's initial phase (RUC 1.0) relied heavily on aftermarket hardware. Participants were often required to install a GPS-enabled or non-GPS plug-in device in their vehicle's On-Board Diagnostic (OBD-II) port. However, these devices proved to be an administrative and financial burden. Not only were they expensive to procure and ship, but they also introduced "tamper risk," where a user could simply unplug the device to avoid being charged.
Under the current RUC 2.0 framework, UDOT has moved toward software-based solutions that significantly reduce overhead. The removal of plug-in devices contributed to a 60% reduction in administrative costs since the program's inception.
Participants in the Utah RUC program currently select one of two primary reporting pathways, neither of which requires the sharing of location data with the state.
This is the preferred method for modern vehicles. It utilizes the vehicle's factory-installed cellular connection to transmit odometer readings directly to the CAM (currently ETAN, formerly emovis). As of 2023, 75% of new vehicles are sold with these systems, making this a highly scalable solution. Mileage is typically captured automatically every three months with no action required from the driver.
For owners of older vehicles or those wary of telematics, this "low-tech" option allows users to submit a photo of their odometer every three months via a smartphone app. To ensure accuracy and prevent fraud, the program requires direct photo capture through the app rather than allowing the upload of pre-existing images, which could be manipulated.
The charging mechanism is designed to feel more like a utility bill than a tax. Participants do not pay their RUC fees directly to the DMV during registration. Instead, they interact with the CAM through a digital portal.
Upon enrollment, a participant sets up a prepaid wallet with a valid credit or debit card. An initial $15 charge is applied.
As miles are reported (either automatically via telematics or manually via photo), the per-mile fee is deducted from the wallet balance. When the balance drops below $5 (the minimum threshold), the wallet is automatically replenished with a $10 "top-up" charge.
This is the most critical feature of Utah's voluntary model. A participant's total RUC charges for a 12-month registration period will never exceed the amount of the flat alternative fuel fee they would have paid at registration. Once the accumulated mileage charges reach this cap, deductions stop for the remainder of the registration year.
Despite the technological sophistication of the program, adoption levels have remained relatively modest. As of late 2023 and early 2024, enrollment was estimated at between 5,000 and 7,200 vehicles. Considering there are approximately 45,000 EVs currently on Utah roads, the participation rate for the most incentivized group is only about 11% to 16%.
The primary barrier to higher adoption in a voluntary system is the math of the "break-even" point. Because of the annual cap, the RUC program essentially functions as a discount for low-mileage drivers. If a driver travels more than the break-even mileage, they pay the same as they would under the flat fee, but they incur the added administrative "cost" of managing a RUC account and reporting mileage.
For the 2025 calendar year, the RUC rate is 1.11 cents per mile, and the annual cap for an EV is $143.25.
If an EV owner drives fewer than 12,905 miles per year, they save money by joining the RUC. If they drive more, they gain nothing financially. Given that the average Utah vehicle travels 15,243 miles per year, the majority of drivers are actually incentivized to avoid the program and simply pay the flat fee at registration. This dynamic is a fundamental weakness of the opt-in system, as it creates a "revenue ceiling" where the state only collects the full amount from those who drive the least, while high-mileage drivers (who inflict the most damage on the roads) opt out and pay a flat fee that may not cover their actual usage costs.
Break-even calculation
While adoption is low, the financial efficiency of the program has improved dramatically. UDOT reports that for the first time in fiscal year 2025, the mileage revenue is anticipated to exceed program expenses. This transition to "profitability" (where revenue > administrative cost) is a vital milestone for any distance-based system, as critics often point to the high cost of mileage collection compared to the extreme efficiency of the gas tax. Utah's move to RUC 2.0 (telematics and odometer photos) has been the primary driver of this improved margin.
Administrative cost per vehicle by program phase
| Program Phase | Reporting Tech | Unit Cost per Vehicle |
|---|---|---|
| RUC 1.0 (Initial) | OBD-II Plug-in Device | $128.04 |
| RUC 2.0 (Current) | Telematics | $102.48 (Down 20%) |
| RUC 2.0 (Current) | Odometer Capture | Significant Reductions (-73% to -96%) |
Source: 16
The decision to make the RUC program voluntary was a strategic maneuver designed to navigate a complex landscape of political, cultural, and technical constraints. This "choice" model serves several purposes beyond simple revenue generation.
In Utah, as in many western states, there is a deep-seated cultural skepticism toward government surveillance. A mandatory RUC, particularly one requiring a GPS device, would likely have triggered immediate and intense political opposition. By making the program voluntary, the state transformed the RUC from an "imposition" into a "service" or "consumer choice". Proponents can argue that no one is being forced to track their miles; they are simply being given a choice to pay for exactly what they use. This framing has successfully "softened the ground" for the concept of distance-based charging, allowing it to become part of the normal transportation discourse without the baggage of a mandate.
A mandatory program for 3 million vehicles would require a massive, flawless technical infrastructure from day one. By starting with a voluntary cohort, Utah created a "sandbox" where it could test different CAMs (emovis vs. ETAN), different reporting methods, and different billing cycles. This period of experimentation allowed UDOT to identify and fix issues (such as the high cost of hardware and the complexities of data sharing between the DMV and third-party vendors) before the system was required to handle the entire state's fleet.
One of the gas tax's greatest political assets is its "hidden" nature. Most drivers do not know exactly how much they pay in gas tax because it is baked into the per-gallon price at the pump. A RUC, by contrast, is highly visible. Participants see a $10 "top-up" on their credit card statement or a monthly summary of miles driven. By starting with a voluntary program, Utah is slowly acclimating the public to this new, more visible form of taxation. The hope is that by the time the program becomes mandatory, the "shock" of the new billing format will have worn off.
Utah's RUC reveals the boundaries of political feasibility in modern infrastructure policy. Even in a state with a strong "user pays" conservative philosophy, several constraints have dictated the program's cautious design.
Privacy is the paramount constraint. The Utah legislature has been remarkably consistent in its requirement that the RUC program protect participant data. This is reflected in the administrative rules (R926-17), which strictly define how CAMs must handle personal information and prohibit its public disclosure.
The political sensitivity of this issue is underscored by broader legislative trends in Utah. For example, in 2025, U.S. Senator Mike Lee of Utah introduced the "Auto Data Privacy and Autonomy Act," which seeks to give vehicle owners control over data generated by their cars and outlaw its sale without explicit consent. In such a climate, any distance-based charging system that required GPS tracking or continuous location reporting would be politically untenable. Utah's RUC has survived precisely because it has successfully decoupled "distance" from "location".
Privacy-first design
A significant political hurdle for distance-based charging is the perception that it would disproportionately impact rural residents who must drive longer distances for work, healthcare, and groceries. This perception often leads rural legislators to oppose RUC initiatives.
However, Utah-specific research conducted through the RUC West consortium has provided a powerful counter-narrative. Because rural residents often drive older, less fuel-efficient vehicles (like trucks and SUVs), they actually pay a higher share of the gas tax per mile than their urban counterparts in newer, efficient sedans.
Projected change in tax burden under RUC
| Geographic Area | Projected Change in Tax Burden Under RUC |
|---|---|
| Rural Households | Pay 1.9% to 6.3% LESS |
| Urban Households | Pay 0.3% to 1.4% MORE |
| Utah Rural Drivers (Avg) | Save 5.5% |
| Utah Urban Drivers (Avg) | Pay 0.6% More |
Source: 7
Despite this evidence, the "rural penalty" remains a potent political myth. The voluntary model allows the state to continue gathering data to "demystify" this issue for constituents and legislators before moving toward a mandatory system.
Utah's commitment to incrementalism includes ongoing research into how a RUC can be integrated with other modern transportation technologies to create a more unified user experience.
A significant limitation of current RUC programs is their inability to easily differentiate between miles driven on state highways and those driven on local city streets. This makes it difficult to distribute RUC revenue to local jurisdictions fairly. To address this, UDOT launched the "Local RUC & Tolling Integration Pilot" (October 2023 to March 2024).
Participants in the pilot (drawn from Ogden, Saratoga Springs, South Jordan, and St. George) were given a device to test whether mileage reporting technology could distinguish between state and local road usage. The pilot also explored a "unified statement" approach, where a driver's state RUC, local RUC, and I-15 Express Lane tolls would all appear on a single monthly bill. This type of integration is essential for reducing "bill fatigue" and improving public acceptance of usage-based fees.
Utah has been a frequent recipient of federal grants to explore the interoperability of RUC systems. Recent grants have funded studies into:
Exploring the combination of RUC and the Express Lanes tolling system.
Testing the feasibility of cities and counties using the state's RUC platform to generate their own local transportation revenue.
Researching how to make the enrollment and reporting process as friction-less as possible to encourage more voluntary participation.
The Utah case study highlights a clear set of trade-offs associated with the voluntary, capped model. While it has been an effective political strategy, it faces significant functional challenges.
The trajectory of Utah's transportation policy points toward a single destination: the eventual replacement of the fuel tax with a mandatory, statewide road usage charge. The legislative mandate in SB 150 to have an enrollment plan for all vehicles by 2031 is a clear signal to the market and the public.
The success of this transition will depend on three factors:
As the state continues to increase the flat registration fee (projected to reach $240 for EVs by 2032), the "break-even" mileage will increase, making the RUC attractive to a larger portion of the population.
The program must continue to leverage OEM telematics to ensure that for the average driver, the RUC is "invisible" - requiring no more effort than their current car payment or insurance policy.
As the program moves toward a mandate, the state will need to provide even more robust, technology-neutral options (such as "low-tech" annual odometer checks at safety inspections) for those who refuse to use telematics or smartphone apps.
Utah's experience demonstrates that distance-based charging is no longer a theoretical concept but an operational reality. By choosing the path of incremental adoption and voluntary participation, Utah has positioned itself as the national leader in the transition to a sustainable, fuel-neutral transportation funding model.
The lessons learned in the canyons and corridors of Utah will undoubtedly serve as the blueprint for a nation facing its own fiscal crossroads. The trajectory of Utah's transportation policy points toward a single destination: the eventual replacement of the fuel tax with a mandatory, statewide road usage charge. The legislative mandate in SB 150 to have an enrollment plan for all vehicles by 2031 is a clear signal to the market and the public.
