Transportation — services
Multi-SKU non-CPI basket: AAA Your Driving Costs annual composite cents-per-mile (auto-driving, 2004+) + BTS National-Level Domestic Average Air Fare quarterly (airfare, 1995+). Captures CEX 2000 'Other vehicle expenses' and 'Public transportation' sub-components.
Sources
Precedence ladder for transportation — services. Lower precedence wins where multiple sources cover the same period. The engine walks the ladder per period with chain-link rescale at source transitions.
| Precedence | Source | Series ID | Cadence | Geography |
|---|---|---|---|---|
| 0 | aaa_driving AAA YDC annual composite cents-per-mile |
aaa_ydc_composite_cents_per_mile | — | national |
| 0 | bts_atpi BTS US national domestic average air fare, quarterly |
bts_us_domestic_air_fare_quarterly | — | national |
Weight across archetypes
How transportation — services is weighted in each of the 10 published archetypes. Sorted by weight, highest first. National Average is the headline citation surface.
| Archetype | Weight | Action |
|---|---|---|
| Income — Highest Quintile | 12.2832% | View archetype → |
| Homeowner | 10.9330% | View archetype → |
| Income — Fourth Quintile | 10.7460% | View archetype → |
| National Average | 10.1391% | View archetype → |
| Income — Middle Quintile | 9.8162% | View archetype → |
| Working Parent | 9.7867% | View archetype → |
| Retiree | 9.7263% | View archetype → |
| Income — Second Quintile | 8.2783% | View archetype → |
| Renter | 8.2309% | View archetype → |
| Income — Lowest Quintile | 6.9386% | View archetype → |
Substitution history
Substitution log entries that touched this stratum. Each entry
bumps the basket version and is reproducible from observations
tagged with their basket_version.
No substitution log entries reference this stratum directly.
Methodology
See the basket page for all 20 strata and the per-stratum source map. The methodology page covers the load-bearing pillars including the rules around source-precedence ladders, chain-link splicing at source transitions, and the no-fabricated-data invariant.