All Plans
Every carrier in FMCSA's registry is bucketed into a fleet size class — a single letter from A to Q based on power-unit count. DOT Lead Scout shows this letter directly and uses raw power-unit and driver counts to drive scoring, badges, and the High Value designation.
The Fleet Size Class Codes
fleetsize code. The mapping isn't published anywhere in plain English, but observed across millions of carrier records, the common letters track to power-unit counts roughly like this: Ranges are observed, not official
FMCSA doesn't publish the exact letter-to-count mapping. These ranges are derived from analyzing millions of fleetsize + power_units pairs in the live data. They're directionally accurate — a B is always smaller than a C, always smaller than a D.
Power Units & Driver Counts
How Fleet Size Affects Opportunity Score
The Driver-to-Truck Ratio (Utilization)
total_drivers ÷ power_units. This number is more telling than fleet size alone because it reveals how the fleet is actually staffed: High Value badge is automatic
Any carrier with a utilization ratio of 1.5x or higher gets the High Value green badge throughout the platform — on lead lists, the map, daily digests, and lead detail panels.
The Fleet Tier Up Change Signal
fleetsize letter increases (e.g. C to D, or F to G), DOT Lead Scout fires the Fleet Tier Up change signal. This means the carrier just crossed a fleet-size threshold — they're scaling, hiring, and almost certainly onboarding new drivers who need physicals. Why Fleet Size Drives Exam Demand
Plus turnover
These numbers assume routine biennial physicals only. Trucking has high driver turnover — new drivers need a pre-employment exam, which roughly doubles real-world demand for an actively-hiring carrier.
