> ## 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. # Race Craft: the race as it actually unfolded > The events that interrupt a race rather than the pace that decides it safety cars, virtual safety cars and red flags, on the lap each one happened. ## What this pillar does Every other pillar in this app measures **pace**: how fast a car was, and why. Race Craft measures the things that suspend pace altogether. A neutralisation is the single largest exogenous shock in a Grand Prix. It erases the gaps that twenty laps of degradation management built, it halves the price of a pit stop for whoever has not yet taken one, and it routinely decides the result. A strategy call graded without it is graded against the wrong race. * **[Race Control Timeline](/app/race-control)** puts every safety car, VSC and red flag of a single race on its lap axis, with each window's duration in laps. Read alongside the [Pit Strategy Gantt](/app/pit-strategy) for the same race, it separates a strategist who called a caution correctly from one who was standing in the right place when it happened. ## What this pillar deliberately does not claim The obvious next question "how likely is a safety car at this circuit?" is not answered anywhere in this app, and the reason is measured rather than asserted. The warehouse holds about 4.1 races per circuit, and at that volume the between-circuit variance component of the per-race caution rate measures **zero**. Eight circuits in the naive table read exactly 100% and one reads 0%, which is what 36 estimates each carrying a 22-point standard error look like. The [Race Control Timeline](/app/race-control) page carries the full argument, and shows a pooled rate with an interval in place of a per-venue percentage. ## Every feature in this pillar Safety cars, VSCs and red flags per race, on the lap and for the duration, with the pooled caution frequency and its interval. ## Data lineage The per-lap status originates in the FIA track-status channel, decoded in `stg_laps` and carried into `int_stint_geometry`. The app reads it through `race_caution_timeline`, an export-time aggregate at one row per (race, lap). Per-circuit hazard context comes from `int_sc_hazard_history`, season-lagged and empirical-Bayes shrunk. The FIA race-control **message** feed is also ingested (`stg_race_control`, 12,814 messages across all 149 races) but is not yet consumed by any model or export. What it lacks is structure: penalties and DRS windows live inside the message text, not as fields, which is why Penalty Impact and DRS Dependency remain on the [roadmap](https://offthepace.dev/roadmap).