Full Course Yellow - Safety Car App (no car required in Grid)

In AC a yellow flag does nothing. This app turns it into a proper Full Course Yellow: if the yellow lasts longer than N seconds, a safety car is deployed to neutralise the race, bunch the field up and hand it back at the restart — just like the real categories.

There are already many apps that manages the yellow flag behaviour. This one is different since it spawn the Safety Car without requiring adding it to the race grid.

What it does:

🟡 Detects a sustained yellow and triggers the FCY (configurable threshold, or manual/hotkey trigger).

🚗 Safety car = follows the racing line, flashing beacons via emissive.

🤖 The AI queue up behind the safety car and never overtake it — hard-enforced, not just a top-speed hint they'd exceed.

🏁 You must hold position too: overtake the safety car (or a moving car) and a "GIVE THE POSITION BACK" countdown starts; ignore it → black flag + forced pit. Crashed cars can still be passed.

🛣️ Two modes: the safety car exits and returns via the pit lane (uses pit_lane.ai) or deploys ahead of the race leader.

📺 On-screen flag instructions (catch the SC / hold X km/h / do not overtake / green flag…).

⚙️ Fully configurable: speed, cornering grip, give-back time, lights, wheels, rules.

Requirements / install

Custom Shaders Patch.

Drop the folder into assettocorsa/apps/lua/FullCourseYellow/.

Open the Full Course Yellow app in a session and place the instruction HUD window.

Notes

The safety car is a script-driven model (no solid collision): contact is detected by proximity.

Pit-lane mode needs a valid pit_lane.ai; otherwise the app automatically falls back to spawning on track.