Estimated medical cost savings in Utah by implementation of a primary seat belt law
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Summary
This report estimates the medical cost savings for Utah resulting from the implementation of a primary seat belt law. The study was motivated by the financial burden placed on state budgets, residents, insurance companies, and the federal government by motor vehicle crashes involving unbelted occupants. While seat belts significantly reduce the risk of death and serious injury, Utah operated under a secondary seat belt law at the time, which restricts police enforcement to situations where another traffic violation is observed. The authors aimed to quantify the minimum direct medical cost savings associated with upgrading to a primary law, which allows enforcement for seat belt violations alone. The methodology utilized 2007 hospital discharge data from Utah to identify motor vehicle crash-related injuries. To estimate total medical costs, the authors adjusted actual hospital charges using lifetime cost estimates from the National Highway Traffic Safety Administration’s *Economic Impact of Motor Vehicle Crashes* report, updated for inflation through 2009. The analysis excluded injuries from large truck occupants, as federal laws already govern those drivers, and adjusted for incomplete injury coding in hospital records. The study assumed that implementing a primary law would increase seat belt usage by 5.6 percentage points (based on a 40% conversion rate of non-users) and that seat belts are 50% effective in preventing serious injuries. Savings were calculated by applying these effectiveness rates to the projected increase in belt usage across different payer categories. The results indicated that traffic crashes incurred an estimated $222.7 million in total medical costs in Utah for a single year. Implementation of a primary seat belt law was projected to save approximately $11.0 million annually. Insurance companies would realize the largest savings, estimated at $9.5 million. Utah residents would save $376,715, while the federal government would reduce its costs by $351,034 before Medicaid reimbursements. Utah’s state spending would decrease by $614,006; however, after accounting for the federal government’s 71% reimbursement of Medicaid costs, the state’s net savings would be approximately $180,000, with the federal government’s net cost increasing by $785,198. Charities and other payers would save $176,624. The authors conclude that these figures represent conservative underestimations of the true economic benefits, as the study excluded peripheral costs such as lost wages, productivity losses, and the value of human life. The findings suggest that upgrading to a primary seat belt law offers significant financial relief to all stakeholders, particularly private insurers and the state budget, by reducing the incidence of severe, costly injuries associated with unbelted occupants.
Key finding
Implementation of a primary seat belt law in Utah is estimated to save more than $11.0 million in total medical costs annually, including $614,000 in direct state spending.
Methodology
dataset
Sample size: 1341
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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- Empirical Findings: crash risk outcomes