> ## 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_lap_telemetry_aggregates

> Per-lap telemetry features for the tyre-cliff model.

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

Per-lap telemetry features for the tyre-cliff model. One row per race lap. Powertrain aggregates (gear changes, rpm, full-throttle/DRS share, short-shift index) plus five within-stint-drift cliff signals (mid-corner speed loss, wheelspin proxy, throttle-trace decay, braking-point drift, lift-and-coast share), each measured vs the driver's own early-stint baseline. Computed lap-internally from the 'car' telemetry channel; NULL where a lap has no telemetry (explicit missingness, carried as XGBoost native-NaN).

## Lineage

```mermaid theme={null}
flowchart LR
  int_lap_anomaly_flags --> int_lap_telemetry_aggregates
  stg_telemetry --> int_lap_telemetry_aggregates
  int_lap_telemetry_aggregates --> fct_cliff_prediction_features
  style int_lap_telemetry_aggregates 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), [`int_lap_anomaly_flags`](./int_lap_anomaly_flags) |

**7 tests** [guard](/transform/ci/overview) this model  -  7 generic, 0 singular.

## Columns

| Column                     | Type | Nullable | Tests                                                                        | Description                                                              |
| -------------------------- | ---- | -------- | ---------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
| `lap_id`                   |      | Yes      | [`not_null`](/transform/ci/structural), [`unique`](/transform/ci/structural) | Foreign key to stg\_laps                                                 |
| `stint_id`                 |      | Yes      | [`not_null`](/transform/ci/structural)                                       | Stint surrogate key (baseline partition)                                 |
| `pct_full_throttle`        |      | Yes      | [`accepted_range`](/transform/ci/range-and-domain)                           | Fraction of the lap at full throttle (0–1)                               |
| `pct_drs_active`           |      | Yes      | [`accepted_range`](/transform/ci/range-and-domain)                           | Fraction of the lap with DRS active (0–1)                                |
| `traction_wheelspin_proxy` |      | Yes      | [`accepted_range`](/transform/ci/range-and-domain)                           | Share of corner-exit full-throttle samples with non-positive accel (0–1) |
| `lift_coast_share`         |      | Yes      | [`accepted_range`](/transform/ci/range-and-domain)                           | Off-throttle, non-braking, decelerating share of the lap (0–1)           |