FMCSA · Safety Measurement System register · Arizona

Controlled Substances/Alcohol in Arizona

• 466Violations recorded
• 29,841Registered carriers in the state
• 107,532State inspections addressing it

Driving under the influence of drugs or alcohol. Arizona carries 466 violations in this category, out of 14,736 recorded nationally, which places it 9 of 51 jurisdictions the register covers. Its share of the national figure is 0.032 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 8.55.

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

• 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 177,896

Controlled Substances/Alcohol 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.