Surface Transportation System Funding Alternatives Phase II Evaluation: Washington State Transportation Commission Road Usage Charge Pilot
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Summary
This report presents the independent evaluation of Phase II of the Washington State Transportation Commission’s (WSTC) Road Usage Charge (RUC) pilot, funded by the U.S. Department of Transportation’s Surface Transportation System Funding Alternatives (STSFA) program. The research addresses the declining reliability of motor fuel taxes as a primary source of transportation infrastructure funding, driven by increasing vehicle fuel efficiency and the adoption of electric vehicles. The study aims to determine whether user-based alternative revenue mechanisms, specifically mileage-based fees, can maintain the long-term solvency of the Highway Trust Fund and be implemented nationally. The evaluation focused on a 12-month pilot launched in January 2018, involving over 2,000 drivers from Washington State and neighboring jurisdictions. The pilot simulated a real-world RUC program by offering participants five mileage reporting methods (MRMs), ranging from manual odometer readings to automated GPS-enabled devices. Key components included a central interoperability hub (HUB) for reconciling funds across jurisdictions, specifically testing coordination with Oregon’s OReGO program, and a help desk for participant support. The evaluation methodology assessed technical accuracy, public outreach, perception, interoperability, privacy, compliance, and equity through surveys, focus groups, and system audits. Findings indicate that while manual MRMs had high implementation maturity, they ranked low on usability and accuracy because they could not differentiate taxable from nontaxable miles. Automated smartphone applications struggled to reliably identify the specific vehicle being driven without supplemental equipment. The pilot successfully demonstrated interoperability and fund reconciliation between Washington and Oregon, though full-scale implementation would require resolving legal authority and clearinghouse governance issues. Public perception improved throughout the pilot, with outreach efforts enhancing understanding and acceptance. However, the study identified gaps in legal privacy protections, recommending that future systems be backed by specific legislation mandating privacy safeguards. Additionally, incorporating congestion pricing was deemed problematic as it would require mandatory GPS usage, violating the principle of consumer choice in reporting methods. The significance of this evaluation lies in its provision of actionable insights for national implementation of mileage-based fees. The report concludes that while RUC systems are technically feasible and can gain public acceptance through transparent communication and choice of reporting methods, they require robust legal frameworks for privacy and interoperability. The findings inform the Secretary of Transportation and U.S. Congress on the administrative costs, potential negative effects on constituents, and necessary policy adjustments to transition from fuel taxes to user-fee structures effectively.
Key finding
The Washington State road usage charge pilot demonstrated that diverse mileage reporting methods can support user choice and cross-jurisdiction interoperability, though manual methods lacked precision and stronger legal privacy frameworks are required for national implementation.
Methodology
field_study
Sample size: 2000
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | success | cached | — | — | 2 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 3 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 24 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Applied Guidance: countermeasure evaluation
- Empirical Findings: observational prevalence