Sessions

What is a Session?

A Session represents a single F1 track session (Practice, Qualifying, Sprint, or Race). It contains all data for that session including drivers, laps, telemetry, weather, and race control messages.

Session Hierarchy

tif1 supports all F1 session types:

Practice 1, Practice 2, Practice 3
Qualifying
Sprint, Sprint Qualifying, Sprint Shootout
Race

Lazy Loading

Sessions use lazy loading for optimal performance. Data is only fetched when you access it:

session = tif1.get_session(2025, "Bahrain Grand Prix", "Race")
# No data fetched yet

laps = session.laps  # Data fetched now
# Subsequent access is instant from cache
```yaml

## Data Enrichment

tif1 automatically enriches data with additional information:

- Weather data is included in every lap
- Telemetry includes DriverAhead and DistanceToDriverAhead
- LapTimeSeconds is provided as a numeric helper alongside LapTime
- Position and acceleration data (X, Y, Z) in telemetry

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## Related Pages

<CardGroup cols={2}>
  <Card title="Core API" href="/api-reference/core">
    Session class
  </Card>
  <Card title="Getting Started" href="/getting-started">
    Usage guide
  </Card>
  <Card title="Race Analysis" href="/tutorials/race-analysis">
    Tutorial
  </Card>
</CardGroup>

Get Started

Guides

Concepts

Reference

What is a Session?

Session Hierarchy

Lazy Loading

​What is a Session?

​Session Hierarchy

​Lazy Loading

What is a Session?

Session Hierarchy

Lazy Loading