FMCSA · Safety Measurement System register · Maryland

Controlled Substances/Alcohol in Maryland

• 454Violations recorded
• 42,485Registered carriers in the state
• 153,816State inspections addressing it

Driving under the influence of drugs or alcohol. Maryland carries 454 violations in this category, out of 14,736 recorded nationally, which places it 11 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 24,152
• 2 to 5 power units 12,604
• 6 to 20 power units 2,854
• 21 to 100 power units 668
• 101 to 1,000 power units 93
• 1,000 or more power units 40

Other categories recorded in Maryland

• Crash Indicator 4,372
• Driver Fitness 13,953
• Hazardous Materials Compliance 583
• Hours-of-Service Compliance 5,838
• Unsafe Driving 18,991
• Vehicle Maintenance 123,640

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

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.