FMCSA · Safety Measurement System register · Connecticut

Controlled Substances/Alcohol in Connecticut

• 130Violations recorded
• 20,725Registered carriers in the state
• 36,984State inspections addressing it

Driving under the influence of drugs or alcohol. Connecticut carries 130 violations in this category, out of 14,736 recorded nationally, which places it 37 of 51 jurisdictions the register covers. Its share of the national figure is 0.009 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 11,192
• 2 to 5 power units 6,707
• 6 to 20 power units 1,505
• 21 to 100 power units 296
• 101 to 1,000 power units 57
• 1,000 or more power units 18

Other categories recorded in Connecticut

• Crash Indicator 2,880
• Driver Fitness 4,574
• Hazardous Materials Compliance 243
• Hours-of-Service Compliance 4,549
• Unsafe Driving 7,935
• Vehicle Maintenance 49,155

Controlled Substances/Alcohol across every jurisdiction → Every category in Connecticut →

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.