Study Quantifies Safety Performance Gap Between Underwritten and Non-Underwritten Carriers

Key Details A new peer-reviewed study analyzing 314,078 interstate for-hire motor carriers has documented a significant safety performance gap between carriers with underwritten insurance policies and those with non-underwritten coverage. Researchers linked FMCSA safety data to insurance filing records, comparing four insurance classification types: underwritten programs with prospective risk assessment, non-underwritten instant-issue platforms, Risk Retention Groups operating under federal preemption, and group captive programs. What The Data Shows Non-underwritten carriers demonstrated substantially higher composite risk scores than underwritten peers of comparable fleet size across five of six fleet size categories. The differences ranged from less than a quarter point among solo owner-operators to over four points for medium fleets with 20-99 power units. Non-underwritten carriers also recorded dirty inspection rates - inspections generating violations across multiple BASIC categories - at 7.93 percentage points above underwritten averages. Why It Matters Federal law does not require insurers to evaluate motor carrier safety fitness before binding policies. The $750,000 federal minimum liability requirement, unchanged since 1980, was intended to create a safety quality barrier but has failed to function as one. This study provides the first national-scale data confirming the structural gap between rigorous underwriting with safety audits and instant-issue digital platforms that bind coverage without reviewing crash history.