> ## 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.

# int_corner_metrics

> Per-corner telemetry metrics.

<Note>Part of the [Physics](/transform/families/physics) family.</Note>

Per-corner telemetry metrics. Grain is (race\_year, race\_id, driver\_id, lap\_number, corner\_name)   one row per corner the driver's telemetry reaches on that lap. Windows come from dim\_corners, keyed per race, so each session is measured against its own corner geometry. Feeds int\_corner\_skill\_residuals and fct\_telemetry\_deltas.

## Lineage

```mermaid theme={null}
flowchart LR
  dim_corners --> int_corner_metrics
  stg_telemetry --> int_corner_metrics
  int_corner_metrics --> fct_telemetry_deltas
  int_corner_metrics --> int_corner_skill_residuals
  style int_corner_metrics fill:#e40404,stroke:#e40404,color:#fff
```

## Overview

| Property          | Value                                                                        |
| ----------------- | ---------------------------------------------------------------------------- |
| Layer             | `intermediate`                                                               |
| Family            | [Physics](/transform/families/physics)                                       |
| Contract enforced | No                                                                           |
| Upstream          | [`stg_telemetry`](../stg/stg_telemetry), [`dim_corners`](../dim/dim_corners) |

**8 tests** [guard](/transform/ci/overview) this model  -  7 generic, 1 singular.

## Columns

| Column             | Type | Nullable | Tests                                  | Description                                                                                                                                                                                      |
| ------------------ | ---- | -------- | -------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `driver_id`        |      | Yes      | [`not_null`](/transform/ci/structural) | FastF1 three-letter driver code.                                                                                                                                                                 |
| `lap_number`       |      | Yes      | [`not_null`](/transform/ci/structural) | Lap number within the race.                                                                                                                                                                      |
| `race_id`          |      | Yes      | [`not_null`](/transform/ci/structural) | Numeric FastF1 event id.                                                                                                                                                                         |
| `race_year`        |      | Yes      | [`not_null`](/transform/ci/structural) | Season year.                                                                                                                                                                                     |
| `corner_name`      |      | Yes      | [`not_null`](/transform/ci/structural) | Turn label from dim\_corners (Turn\_7, Turn\_7A).                                                                                                                                                |
| `track_id`         |      | Yes      | [`not_null`](/transform/ci/structural) | Event slug the corner belongs to, carried from dim\_corners as a label.                                                                                                                          |
| `braking_point_m`  |      | Yes      |                                        | Distance of the first sample on the brakes inside the corner window. NULL where the corner is taken flat   a real answer for a fast corner, not missing data.                                    |
| `v_min_kph`        |      | Yes      | [`not_null`](/transform/ci/structural) | Minimum speed recorded inside the corner window (the apex speed).                                                                                                                                |
| `throttle_point_m` |      | Yes      |                                        | Distance of the first full-throttle sample at or after the apex: where the driver gets back on power. NULL where the driver never reaches 100% throttle before the window ends at the next apex. |