Apex drag/frontal-area (EPA coastdown) is an Apex-derived computed source ingested into the Apex vehicle specification database. It contributes 22,789 active rows covering drag coefficient, frontal area from epa coastdown.
US federal government work. Under 17 U.S.C. § 105, works of the US government are not subject to copyright and are in the public domain in the United States.
Drag coefficient, frontal area from EPA coastdown
Tier
Derived — Apex-computed, labelled per row
Values Apex computes from other attributed sources. Each derived value carries its own provenance row. DQ score 3–4 depending on derivation method.
Row count (active)
22,789
Active, non-superseded provenance rows in the current snapshot
Variants touched
21,365
Distinct vehicle variants carrying at least one value from this source
Source type
Apex derived
Values computed by Apex from other attributed sources; provenance-labelled per row.
PCAF DQ score
DQ 3–4 (derived, labelled per row)
Default data-quality score for provenance rows from this source tier
Source code
epa-coastdown-derived
Used in the provenance table and API responses
https://apex-db.org/docs/sources#epa-coastdown-derived
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reference
Sources & licensing reference
Full table of commercial-use and licence-review sources
provenance
Provenance model
How source codes, URLs, confidence, and effective flags are attached to values
coverage
Coverage matrix
Per-field coverage across segments with PCAF DQ scores