TruckCodex

Data & Methodology

How TruckCodex sources, processes, and presents trucking data. Every metric on the site is traceable to a public upstream — FMCSA, NHTSA, EIA, or Transport Canada.

Data Sources

Registry of FMCSA, NHTSA, EIA, and Transport Canada datasets — trust tiers, update cadence, and known limitations for every source we draw from.

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Data Freshness

Recent import runs, success/failure status, and last-refreshed timestamps for every data source. Updated daily from the cron pipeline.

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Methodology

How TruckCodex sources, processes, normalizes, and presents trucking data — sentinel-date handling, OOS rate units, BASIC percentile interpretation, and more.

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TruckCodex follows three durable data doctrines: every meaningful field change is recorded over time (history-watch), entity rows are never physically deleted — only flagged with a status field (never-delete-entity), and complex audits are run as parallel sub-research streams (multi-agent). Behind the scenes, the database is replicated to three independent backup destinations daily.

Data sources & freshness

TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.

FMCSA

Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.

Refreshed daily.
NHTSA

Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).

Refreshed daily.
EIA

Retail diesel and gasoline price history and state fuel-tax tables.

Refreshed weekly.
Transport Canada

Cross-border carrier registry and Canadian recall campaigns where applicable.

Refreshed weekly.

TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.