FMCSA · Safety Measurement System register · Illinois

Vehicle Maintenance in Illinois

• 36,714Violations recorded
• 50,233Registered carriers in the state
• 41,694State inspections addressing it

Brakes, lights, tyres and the rest of the mechanical condition of the vehicle. Illinois carries 36,714 violations in this category, out of 5,090,851 recorded nationally, which places it 32 of 51 jurisdictions the register covers. Its share of the national figure is 0.007 as a fraction, banked by the build rather than turned into a ratio here. Nationally, a violation in this category carries an average severity weight of 3.8.

The state’s carriers by fleet size

• 1 power unit 24,267
• 2 to 5 power units 15,696
• 6 to 20 power units 5,285
• 21 to 100 power units 2,170
• 101 to 1,000 power units 459
• 1,000 or more power units 45

Other categories recorded in Illinois

• Controlled Substances/Alcohol 252
• Crash Indicator 8,643
• Driver Fitness 5,149
• Hazardous Materials Compliance 675
• Hours-of-Service Compliance 10,558
• Unsafe Driving 10,122

Vehicle Maintenance across every jurisdiction → Every category in Illinois →

Figures from the federal source files: EPA’s ECHO downloads, CMS provider files and the FMCSA census.

Counts from FMCSA SMS input files on data.transportation.gov: kjg3-diqy (Motor Carrier Census, 2,122,441 rows), rbkj-cgst (Inspection, 5,834,148), 8mt8-2mdr (Violation, 6,808,260), 4wxs-vbns (Crash, 255,582), p2mt-9ige (Out of Service Orders, 399,600); SoQL aggregates fetched 2026-09-16. The rank is taken over the jurisdictions this desk publishes, and the national figure beside it is the register’s own total for the category.