Formation lap in a formula car: warm tyres and brakes by driving alone, what the rules allow, and how to stay in the formation without losing your place.
The honest answer: On the formation lap you bring tyres and brakes up to temperature simply by driving. In Formula 1 the only permitted heating devices are tyre blankets; every other means is prohibited, except driving the car [2]. That is your whole toolbox: line, brake pressure, a bit of lateral load.
And the rules are tighter than many think. The formation must be kept "as tight as possible", practice starts are forbidden, and overtaking is only allowed if a car ahead is delayed and you restore the original order [1]. Until you pass the pole position marker, the pit lane speed limit applies [1].
Scientifically, there is no study on warming formula tyres by driving. We can support that tyre grip depends on tyre type, temperature and condition [3], and that drivers find their feel for grip through feedback from steering wheel, seat and sound [4]. How much lateral load you need on the lap is coaching practice and carries no source number.
Realistically: a formation lap looks like a Sunday drive. But it is the first test of whether you stay calm in the formation as start stress rises.
Check in the driver briefing how the formation is regulated: gaps, weaving yes or no, pit exit rules. If your regulations are built like those of Formula 1, this applies: the formation stays tight, practice starts stay off [1].
Milestone: You can recite the three rules for your series: speed limit until pole, tight formation, overtaking only with a delay.
When the green lights are on, you roll off. Until you pass the pole position marker, the pit lane speed limit applies [1]. In Formula 1 it is 80 km/h, which is brisk city speed [1]. After that you can accelerate.
Milestone: You leave the grid calmly, without abusing the clutch and without a gap to the car ahead.
Drive gentle weaves within your lane, as far as your regulations and the formation allow. Tyres warm up by flexing, not by force. When in doubt, a bit less rather than too much: a sliding cold tyre does not give you temperature, it gives you trouble.
Milestone: After the lap the tyres feel even. At the steering wheel you sense similar grip on both sides [4].
Build brake pressure evenly and release it softly. Choose places where nobody behind you is put at risk. The brakes should get warm, not glowing.
Milestone: Two or three controlled brakings after which the pedal feels as it does in practice.
At the end of the lap you drive back to your grid slot. The field will stand still in a moment. Keep your line clean and stop on the marking, not beyond it.
Milestone: You stand on the marking without correcting and still have an eye for the start lights.
Make a map for yourself before the lap: one place for tyre work, one for brakes, one where you check the gap and the field. That way warming up and the formation do not get in each other's way. This plan is coaching practice; no source names it.
By driving: lateral load in weaves and moderate braking. In Formula 1 the only permitted heating devices are tyre blankets; every other means is prohibited, except driving the car [2]. How much lateral load is ideal depends on the tyre and the series.
Only very restricted. In Formula 1, overtaking is only allowed if a car is delayed and the drivers behind cannot pass it without holding up the field. After that the original order must be restored [1].
Not in Formula 1. The regulations forbid them explicitly, and the formation must be kept as tight as possible [1]. For other series their own regulations apply; ask the organiser.
It brings the field to the starting grid and gives you time to bring tyres and brakes to operating temperature. Which temperatures are ideal depends on the tyre. We give no numbers because we cannot support them.
Yes, in Formula 1 it applies until you pass the pole position marker [1]. The limit there is 80 km/h [1]. After that you can accelerate, within the tight formation.
Pit Entry: Hitting the Speed Limit and the Entrance Cleanly