Realtime Race Engineer
Your race engineer: you talk to it, it answers.
RRE follows your car and the track live in Le Mans Ultimate, warns you by voice, and answers when you ask it a question.
A real conversation, where every answer is based on your race data.
Open beta.
Give me my remaining fuel.
You have 90.9 litres of fuel left. Keep managing consumption.
Can you tell me if I have to pit?
No, no mandatory pit stop. You have enough fuel and the tyres are new.
Reliable answers: it relies on your telemetry.
A real conversation, not just simple questions or commands
RRE remembers what's been said: you can follow up, clarify, or come back to a point, like with a real race engineer over the radio. Every number it gives you comes from your telemetry.
It speaks up, or on demand
- ›Spotter: cars around you
- ›Flags and penalties
- ›Critical fuel, tyre status, damage
- ›Weather and pit window
The same level of alerts you'd expect from a co-driver like CrewChief — plus the conversation on top.
- ›Telemetry and comparison with another driver
- ›Fuel calculation and pit info
- ›Stints, session history
- ›Setup advice
The whole race, under control
Cars around you: side danger, in your slipstream, three-wide.
Remaining range, fuel missing to the finish, pit window, and the most-worn tyre's remaining life.
Your lap time, your best lap of the session, your position, and your gaps ahead, behind, and to the leader. It announces your final lap and your finish.
Wear, pressure and temperature per wheel; brake temperature; bodywork damage.
Flags, safety car, track limits, drive-through and stop-and-go.
Weather evolution and trend, to anticipate a tyre change.
Local reflex, AI backup
Reading
RRE reads the game's telemetry, on your PC.
Listening
You press your PTT button and ask your question; it's transcribed locally, on your PC — your voice is never sent anywhere.
Judgment
Detectors decide what's worth saying, and what isn't.
Voice
The voice is produced on your PC. The text of your question goes to the AI provider of your choice, with your key.
This is how he answers
Excerpt from a real test session in Le Mans Ultimate: what you say out loud, and what he replies.
Repeat your last message.
I warned you your brakes were overheating, with a real risk of brake failure. Keep an eye on it.
What do you want me to do?
Ease off the brakes to let the heat dissipate. Don't force it, we're managing the temperature.
It's still that brake problem.
Yes, the brakes are still overheating. Ease off to cool them down, we'll handle it together.
That was better, my last braking.
Well done, you avoided the lock-up. Keep modulating like that, your tyres will thank you.
Do you have the weather forecast?
I don't have the weather forecast. The track is dry and stable for now.
How was my last lap?
Your last lap was 2 minutes 11.7 seconds, it's also your best lap. You're P6, 6 seconds behind the leader.
Give me the gap to the leader.
The gap to the leader is 7.2 seconds. You're P7, keep managing the brakes.
I just made an overtake, what position am I?
You're P6. Well done on the overtake, keep it up. Gap of 2 tenths ahead, 3 tenths behind.
Give me a track status.
Dry track, 19 degrees, falling trend. No rain, stable conditions.
Tell me a joke to help me relax.
Why are tyres never stressed? Because they're always under pressure!
Real exchanges from a single test race (spoken transcription and replies as they came, originally in French, translated here), picked from several minutes of racing. Some exchanges follow each other, others don't. Replies vary from one session to the next.
It keeps an eye on the cars around you
The spotter warns you when a car is alongside or in your mirrors, and tells you when the track is clear. These alerts are detected on your PC, so they work even without a connection.
A car on your left or right: you are told before you turn in.
A car is coming up behind you and closing in: you know it's there.
When you are squeezed between two cars, you get a warning.
Once the danger has passed, you hear that you can take your line again.
Three levels of chattiness
You choose how much it talks, in the radio settings.
It repeats the warning for as long as the situation lasts.
It calls it out, then repeats once if the situation persists.
It calls it out once, then stays silent.
Our commitments
Everything goes through voice, your screen stays for the track.
RRE reads telemetry and talks to you: you stay in control of your car.
Every number comes from your telemetry. If a piece of data is missing, it tells you.
Speech synthesis runs entirely on your PC.
The spotter and safety alerts work even offline.
Network down or telemetry lost: RRE keeps going with the last known data.
A passion project
RRE is built by a simracing enthusiast of more than 20 years, also a senior software developer in his day job — for the community, in the same spirit as SimHub or CrewChief, which the developer has used himself for years. The beta is free; what comes next will be specified later.
That dual background shows in RRE: the rigor of real, professional software, built on his own time and put to the service of a passion for racing, rather than a script thrown together in a hurry.
The idea came from a gap felt on track — wanting a real engineer to talk to, not just fixed alerts — and grew into a full project, built like software meant to ship, not a prototype meant to be abandoned.
Many players race alone against the AI, with no team and no co-driver: RRE is built for them too, so the radio makes every session feel less solitary, even with no one else in the room.
Before you apply
Frequently asked questions
Join the Discord community
Talk about the project, ask questions and follow progress. Joining the server does not give access to the beta: that goes through the application.
Join the DiscordBe ready at the start.
The beta is open. Send your application: you'll get your invitation by email.
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