Inspection & Violation Trends Analysis

Analysis

· as of September 1, 2026

The most pronounced shift in the dataset is not the gradual rise in inspection volumes or overall violation rates, but the near-doubling of the driver out-of-service rate over roughly two years. The driver OOS rate held in a tight band around 4.6% to 5.2% throughout 2022 and 2023, then broke upward beginning in spring 2025, reaching 7.12% in July 2025 and sustaining above 7.0% through mid-2026. By July 2026 it stood at 7.5%, compared to 4.89% in July 2024, a year-over-year increase of more than 2.5 percentage points on the same metric. The vehicle OOS rate has also moved upward, but more gradually: 14.50% in July 2024 versus 15.77% in July 2026, a considerably smaller shift than what the driver-side numbers show. This divergence between vehicle and driver OOS trends is the most analytically relevant compositional observation in the data; enforcement or compliance pressure appears to be landing disproportionately on driver-related violations rather than equipment defects.

The overall violation rate, which oscillated in a fairly narrow range between 53% and 57% for most of the period, has edged into new territory in early 2026. March 2026 came in at 58.48% and April 2026 at 59.39%, the latter being the dataset maximum. The trailing 12-month average violation rate of 57.4% compares to 55.9% in the prior 12-month period, a shift that looks modest in isolation but is consistent with the directional pressure visible in the monthly series.

Inspection volumes are trending upward in absolute terms despite a slight year-over-year dip in the trailing 12-month total. The 60-month cumulative figure of 11,062,212 inspections provides a baseline that contextualizes current monthly counts, which in peak months now routinely exceed 250,000, levels not seen in the earlier part of the series. The sustained elevation of driver OOS rates through late 2025 and into 2026 may indicate changes in enforcement targeting, shifts in the composition of the inspected driver population, or compliance pressures tied to hours-of-service and licensing categories, though the data alone does not resolve which explanation is operative.