Candice Horbacz
Vehicle miles traveled (VMT) taxes have emerged as a prominent consideration for governments at all levels grappling with the escalating challenge of funding crucial road infrastructure. This innovative approach seeks to replace or supplement traditional fuel taxes, which are becoming increasingly inadequate, but faces substantial resistance primarily due to widespread privacy fears. While Americans are justifiably wary of potential government surveillance programs operating under the guise of a VMT tax, a meticulously designed system can effectively circumvent these privacy invasions, ensuring both fiscal solvency and individual liberty.
The urgency for a new funding mechanism is undeniable. Both the federal Highway Trust Fund and state road programs across the nation are failing to provide sufficient funding through existing road user fees. The primary culprit is the diminishing effectiveness of the gas tax, which has been the bedrock of infrastructure funding for decades. This decline is a direct consequence of improved vehicle fuel efficiency standards and the accelerating adoption of electric vehicles (EVs), neither of which contribute significantly to fuel tax revenues. Policymakers are therefore compelled to seek more sustainable and equitable alternatives, with a VMT tax standing out as a more efficient and future-proof user fee for road maintenance and construction compared to the current patchwork of levies.
The Economic Imperative for VMT Taxes
The financial strain on road infrastructure is not a new phenomenon, but it has reached a critical juncture. The federal gasoline tax, set at 18.4 cents per gallon since 1993, has lost nearly 50% of its purchasing power due to inflation over the past three decades. Simultaneously, advancements in automotive technology mean that vehicles travel farther on less fuel, or, in the case of electric vehicles, no fuel at all. According to data from the U.S. Energy Information Administration and the Federal Highway Administration, gasoline consumption per vehicle has been steadily declining, contributing to chronic deficits in the Highway Trust Fund, which has frequently required infusions from the general fund to remain solvent. This unsustainable reliance on general taxpayer dollars, rather than direct user fees, distorts the true cost of road usage and places an undue burden on non-drivers.
A VMT tax directly addresses these systemic issues by charging drivers per mile traveled on government-maintained roads. This structure aligns perfectly with the "user fee" principle: those who utilize the roads more contribute more to their upkeep. Crucially, this charge can be adjusted based on vehicle weight, a critical factor often overlooked by the gas tax. Heavier vehicles inflict disproportionately more damage on road surfaces, and a VMT system can accurately reflect this wear and tear, establishing a neutral and direct link between road usage, damage, and financial contribution. This contrasts sharply with the current system, which often imposes a uniform gas tax regardless of a vehicle’s weight or efficiency.
Advantages Beyond Funding: Neutrality, Transparency, and Stability
Beyond its capacity to generate much-needed revenue, a VMT tax offers several significant advantages over the existing convoluted system of road funding. It promises a simpler, more streamlined approach, potentially replacing the myriad taxes and fees currently levied on drivers – including vehicle registration fees, sales taxes on vehicle purchases, and various surcharges like retail delivery fees or rental car taxes. This consolidation would create a single, clear charge, simplifying the tax landscape for consumers.
Furthermore, a VMT tax promotes greater neutrality in transportation policy. Unlike the gas tax, which inherently disadvantages conventional gasoline-powered vehicles, a VMT tax applies equally to all vehicles regardless of their propulsion system. This eliminates the implicit subsidy currently enjoyed by electric vehicles, which contribute nothing to the gas tax despite utilizing the same public infrastructure. It also avoids unduly burdening specific types of driving or vehicle ownership, fostering a more equitable system.
Transparency is another key benefit. Establishing a clear price per mile driven makes the cost of road maintenance explicit and understandable to the public. The current system, with its diverse array of taxes and fees, often obfuscates the true cost of roads, sometimes even bundling environmental program costs into what users perceive solely as a charge for infrastructure. A VMT tax would disentangle these costs, providing a clearer picture of where taxpayer money is going.
Finally, a VMT tax is remarkably stable and future-proof. It requires no fundamental updates to accommodate shifts in vehicle technology. Whether the future holds more electric vehicles, hydrogen fuel cell cars, or even vehicles powered by exotic energy sources like thorium fuel cells, the principle remains the same: pay per mile driven. This inherent adaptability ensures a reliable and predictable funding stream for generations, freeing policymakers from the constant struggle to adapt an antiquated tax system to rapidly evolving automotive innovations.
The Sticking Point: Privacy Concerns and Public Distrust
Despite its clear theoretical advantages and modeling that demonstrates its capacity to fund roads, the VMT tax faces substantial public and political opposition, almost exclusively centered on privacy concerns. The perception that a VMT tax would necessitate a government surveillance program monitoring individual movements is a significant hurdle.
This sentiment was eloquently articulated by Governor Ron DeSantis (R-Florida), who posted on X in response to the Tax Foundation’s analysis of VMT viability: "Vehicle Miles Driven (VMT) taxes require the government to surveil movements and violates individual privacy. This may be implemented in states like California, and some have argued that other states should follow. No dice." This statement reflects a broader apprehension among the public and politicians about the potential for unconstitutional surveillance under the guise of fiscal policy.
The public’s skepticism regarding privacy is not unfounded, given a landscape of increasing technological intrusions into personal data and movement tracking. Several recent developments have heightened these concerns, fostering an environment of distrust towards any new government-mandated monitoring program.
Ongoing Transgressions Against Driver Privacy: Fueling Skepticism
One of the most prominent examples of escalating privacy transgressions is the proliferation of automated license plate reader (ALPR) cameras. These high-speed cameras, often mounted on police cars, toll gantries, or stationary poles, continuously scan every license plate within their field of view. The data—including the license plate number, date, time, and GPS coordinates—is then stored in vast, searchable databases, often shared between law enforcement agencies and private entities.
The open-source mapping project DeFlock has documented nearly 100,000 ALPR cameras across the United States. Federal agencies, such as the U.S. Border Patrol, are already leveraging these networks for AI-powered "predictive policing," raising serious questions about mass, warrantless domestic surveillance. This has provoked significant backlash from civil liberties advocates, leading to initiatives like the Plate Privacy Project by the Institute for Justice, which challenges these violations in court.
Even states whose officials express strong privacy concerns regarding VMT taxes are often deeply implicated in ALPR usage. For instance, while Governor DeSantis vehemently opposed VMT-related surveillance, Florida’s extensive Toll-By-Plate system, designed to supplement its SunPass (EZ-pass) program for numerous toll roads, heavily relies on ALPR cameras. DeFlock’s data indicates over 5,000 ALPR cameras in Florida, ranking it fifth nationwide in cameras per road mile. This creates a perceived hypocrisy that further erodes public trust when new monitoring proposals emerge.
Further compounding privacy anxieties is a provision included in the 2021 Infrastructure Investment and Jobs Act (IIJA). This legislation mandates that new vehicles be equipped with a "kill switch"—a surveillance system capable of "passively monitoring the performance of a driver" and preventing vehicle operation if impairment is detected. While the exact implementation details and timeline remain unclear, having already been delayed once, the mandate itself raises profound concerns about remote vehicle control and continuous personal monitoring. If implemented, this technology would add to a growing list of ways modern vehicles track their drivers, from telematics systems used by manufacturers for diagnostics and data collection to in-car infotainment systems that gather user data. Amid this backdrop of escalating vehicle-centered privacy violations, public skepticism towards any new monitoring program, however well-intentioned, is entirely rational. It is crucial for policymakers to understand that a VMT tax does not inherently require such surveillance, and a properly designed system can avoid it.
Designing a Privacy-Conscious VMT Tax
Policymakers committed to both sound fiscal policy and individual rights must move beyond mere political rhetoric and actively design VMT tax regimes that respect privacy from the outset. This is not only essential for garnering public support but also for fending off legal challenges that could derail the most optimal approach to funding government roads.
The fundamental truth is that a VMT tax does not require invading drivers’ privacy. There is no inherent need to track a driver’s specific locations, routes, or driving patterns. A VMT system does not need to know where, when, how, or why driving occurs. It requires precisely one piece of information: the total number of miles driven on government-maintained roads within the applicable jurisdiction during a specific period. This crucial data can be collected and supplied to the government through several privacy-preserving methods.
One highly effective and privacy-friendly method involves periodic odometer readings. The Washington state pilot program for road usage charges, for example, successfully demonstrated that reporting odometer readings, particularly when accompanied by a photograph for verification, is a perfectly viable administrative approach for a VMT tax. Drivers could submit these readings annually or quarterly, much like existing vehicle inspections or registration renewals. To account for miles driven on private property or outside the taxing jurisdiction, a standard exemption for non-chargeable miles could be provided. Drivers who believe they exceed this standard exemption could then have the option to provide documentation of their non-taxable driving, ensuring fairness without requiring real-time tracking. This self-reporting model, bolstered by audit mechanisms, minimizes government intrusion while maximizing driver autonomy.
While privacy concerns dictate that location-based reporting options cannot be required, governments can certainly offer them as a voluntary choice. For many drivers, such systems, especially when coupled with robust data anonymization and security policies, might offer the most convenient method of compliance. Millions of Americans already voluntarily opt into driving monitoring programs offered by their insurance companies. These systems typically use in-vehicle telematics devices, often paired with smartphone applications, to track not only miles driven but also driving behaviors such as speed, acceleration, deceleration, and adherence to traffic laws.
A VMT system could leverage a similar model by utilizing a third-party commercial account manager (CAM). In this scenario, the CAM would collect granular data on driving activity through an in-vehicle device. This data would then be secured, anonymized, and aggregated by the CAM. Crucially, only the aggregated mileage total, perhaps adjusted for jurisdiction, would be shared with the taxing authority. The government would never receive raw location data or detailed driving patterns. California has successfully piloted programs using multiple CAMs and various location-tracking tools, alongside odometer readings, to measure road usage. Their findings consistently suggest the viability of VMT, particularly when privacy-enhancing technologies and third-party management are employed.
The public’s apprehension about government surveillance programs is entirely legitimate. However, it is vital to distinguish between a surveillance program and a legitimate user fee for public infrastructure. A VMT tax, when meticulously designed with privacy as a foundational principle, does not necessitate government surveillance. Policymakers who prioritize and implement such privacy-preserving VMT tax regimes are far more likely to secure both public consent and the necessary constitutional approvals. These dual achievements are indispensable for ensuring that critical transportation systems receive sufficient, reliable, and principled funding, thereby safeguarding the nation’s economic vitality and quality of life for future generations.
