FMCSA · Safety Measurement System register · Arizona

Vehicle Maintenance in Arizona

• 177,896Violations recorded
• 29,841Registered carriers in the state
• 80,812State inspections addressing it

Brakes, lights, tyres and the rest of the mechanical condition of the vehicle. Arizona carries 177,896 violations in this category, out of 5,090,851 recorded nationally, which places it 4 of 51 jurisdictions the register covers. Its share of the national figure is 0.035 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 16,803
• 2 to 5 power units 8,486
• 6 to 20 power units 2,299
• 21 to 100 power units 670
• 101 to 1,000 power units 140
• 1,000 or more power units 32

Other categories recorded in Arizona

• Controlled Substances/Alcohol 466
• Crash Indicator 4,716
• Driver Fitness 8,271
• Hazardous Materials Compliance 1,586
• Hours-of-Service Compliance 44,984
• Unsafe Driving 18,249

Vehicle Maintenance across every jurisdiction → Every category in Arizona →

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.