FMCSA · Safety Measurement System register · South Carolina

Controlled Substances/Alcohol in South Carolina

• 458Violations recorded
• 23,267Registered carriers in the state
• 109,229State inspections addressing it

Driving under the influence of drugs or alcohol. South Carolina carries 458 violations in this category, out of 14,736 recorded nationally, which places it 10 of 51 jurisdictions the register covers. Its share of the national figure is 0.031 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 13,760
• 2 to 5 power units 6,263
• 6 to 20 power units 1,449
• 21 to 100 power units 428
• 101 to 1,000 power units 59
• 1,000 or more power units 23

Other categories recorded in South Carolina

• Crash Indicator 4,716
• Driver Fitness 6,081
• Hazardous Materials Compliance 1,280
• Hours-of-Service Compliance 11,868
• Unsafe Driving 17,217
• Vehicle Maintenance 76,507

Controlled Substances/Alcohol across every jurisdiction → Every category in South Carolina →

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.