> ## Documentation Index
> Fetch the complete documentation index at: https://offthepace.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# driver_isolation_identity_terms

> The cumulative-identity split of tier 3, aggregated over any group of fct_driver_isolation_pair_lap rows (WI-16a).

The cumulative-identity split of tier 3, aggregated over any group of fct\_driver\_isolation\_pair\_lap rows (WI-16a). Use inside a GROUP BY over that model. Per pair row, relative = pace\_gap + car\_advantage + traffic\_advantage + tyre-age bias, where relative is the raw gap (W63 design 2, 2026-10-03: no tyre-age adjustment, peers matched within var('isolation\_peer\_age\_tolerance') laps of tyre age instead) and the bias is the compound seed's pricing of that age gap, (C(peer) - C(driver)), which pace\_gap carries and the raw gap does not. It is 0 between cars on the same tyre age and is not published. Every term is a CONTRIBUTION: its sum over the group's closed rows (both cars have a car term, so pace\_gap is non-NULL) divided by identity\_n\_pair\_laps. Then identity\_relative\_pace\_gain\_s = identity\_pace\_gap\_gain\_s + identity\_car\_advantage\_gain\_s + identity\_traffic\_advantage\_gain\_s + (the group's mean tyre-age bias) The three published contributions therefore close identity\_relative\_pace\_gain\_s only up to that bias. T42 asserts the three-term identity exactly on same-age pair rows, where the bias is 0. A contribution over zero rows is 0, not a measurement. All columns are NULL when the group has no closed row. Seconds per lap, positive = in the focal driver's favour. Emits: n\_pair\_laps, identity\_n\_pair\_laps, identity\_relative\_pace\_gain\_s, identity\_pace\_gap\_gain\_s, identity\_car\_advantage\_gain\_s, identity\_traffic\_advantage\_gain\_s.

## Signature

```sql theme={null}
{{ driver_isolation_identity_terms() }}
```

## Usage

```sql theme={null}
SELECT stint_id, {{ driver_isolation_identity_terms() }}
    FROM {{ ref('fct_driver_isolation_pair_lap') }}
    GROUP BY stint_id
```


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.