What Are FMCSA BASIC Scores? A Freight Broker's Complete Guide

The FMCSA Safety Measurement System (SMS) evaluates motor carriers across seven Behavior Analysis and Safety Improvement Categories — BASICs. After the Supreme Court's Montgomery v. Caribe Transport decision, these scores are now front and center in broker liability. Here's everything you need to know.

The 7 BASIC Categories

Each BASIC uses a rolling 24-month window of roadside inspection violations, crashes, and investigation results. Violations are weighted by severity and time — more recent events count more.

1. Unsafe Driving

What it measures: Speeding, reckless driving, improper lane changes, seatbelt violations, texting/phone use while driving.

Alert threshold: 65th percentile (property carriers).

Why it matters for brokers: This is the most directly relevant BASIC for accident risk. A carrier in Alert status for Unsafe Driving is statistically more likely to be involved in a crash.

2. Hours-of-Service (HOS) Compliance

What it measures: Logbook violations, driving beyond hours limits, no record of duty status, ELD violations.

Alert threshold: 65th percentile.

Why it matters: Fatigued driving is a leading cause of fatal truck crashes. A carrier with HOS issues may be pushing drivers beyond safe limits.

3. Driver Fitness

What it measures: Licensing issues, invalid or expired medical certificates, language proficiency violations.

Alert threshold: 80th percentile.

Why it matters: An unqualified driver behind the wheel is the broker's worst nightmare in litigation.

4. Controlled Substances / Alcohol

What it measures: Positive drug/alcohol tests, test refusals, possession, impairment violations.

Alert threshold: 80th percentile.

Why it matters: A carrier with substance abuse issues poses an extreme safety risk. This BASIC in Alert status should be a hard stop.

5. Vehicle Maintenance

What it measures: Brake, lighting, and cargo securement violations, failure to make required repairs, defective equipment.

Alert threshold: 80th percentile.

Why it matters: Mechanical failures cause accidents. A carrier that doesn't maintain its equipment is a liability.

6. Hazardous Materials Compliance

What it measures: Leaking containers, improper placarding, HM permit violations. Only applies to HM-flagged carriers.

Alert threshold: 80th percentile.

Why it matters: HM incidents can be catastrophic. If you're brokering hazmat loads, this BASIC is critical.

7. Crash Indicator

What it measures: DOT-reportable crashes (fatality, injury, or towaway) regardless of fault determination.

Alert threshold: 65th percentile.

Why it matters: A high crash rate — even if the carrier wasn't at fault — correlates with higher future crash risk according to FMCSA research.

How Percentiles Work

FMCSA ranks each carrier against a peer group (segmented by carrier type and size). A percentile of 75 means the carrier is worse than 75% of its peers. **Higher is worse.** When a carrier exceeds the intervention threshold, it triggers an "Alert" status.

The FAST Act and Public Access

The FAST Act of 2015 removed percentile rankings from FMCSA's public website for property carriers. However, the underlying data — inspections, violations, crashes, and out-of-service rates — remains fully public. The alert/threshold status is also available through the FMCSA QCMobile API. Carriers can also be required to share their own scores as a condition of doing business.

What Brokers Should Watch For

Any BASIC in Alert status — This means the carrier exceeds FMCSA's intervention threshold. It doesn't mean the carrier is automatically unsafe, but it's a documented red flag that you need to address in your selection decision.

Multiple BASICs in Alert — A carrier with 3 or more BASICs exceeding thresholds has systemic safety problems. This should be a hard stop unless you have extraordinary documented justification.

Unsafe Driving + Crash Indicator — These two BASICs have the lower 65% threshold because they most directly predict crash risk. Both in Alert is a serious concern.

The Small Carrier Caveat

A single-truck carrier with one bad inspection can spike to a high percentile. FMCSA's own research concluded the methodology is statistically sound, but the volatility is real. For small carriers, look at the raw inspection and violation data, not just the percentile.

After Montgomery: BASICs Are Litigation Evidence

The Montgomery decision makes clear that brokers must review "available safety data." BASIC scores — or at minimum, the underlying inspection and crash data — are available and free. A plaintiff attorney will absolutely ask: "Did you check the carrier's BASIC scores before dispatching this load?" Having a documented answer matters.