Box, box, Plan B: F1 team radio decoded

"We are on Plan B. We are getting close, we are getting close." That was Carlo Santi to Lewis Hamilton in Singapore on Sunday. A few messages later Hamilton asked: "shall we wait to see if VSC or something comes out?" A virtual safety car did come out, Ferrari called him in, and he missed the pit entry. He had started third and finished sixth. Team radio has long been the best soundtrack in sport, and this year, with drivers managing their battery energy lap by lap, the engineer's voice has become part of how the car is driven.

The voice in the helmet

Every driver has one main voice in his ear, and it belongs to the race engineer. GPFans describes the role as the point of communication between driver and team, covering strategy and performance as well as coaching the driver to manage the car. Gianpiero Lambiase has done the job for Max Verstappen since 2016. Peter Bonnington does it for Kimi Antonelli, and Santi for Hamilton.

Behind that voice sits a long chain of people. Aston Martin's Ben Michell has described a trackside chief race engineer, a race engineer on each car and a performance engineer, mirrored at the factory by a "mission control" group that is "not constrained by the curfews, so we can go through the data in more detail". Whatever they find has to be squeezed into a sentence the driver can absorb while racing.

Now and then the boss takes over. When Antonelli demanded a penalty for team-mate George Russell in the Canada sprint, Toto Wolff cut in: "Kimi, concentrate on the driving, please, and not on the radio moaning."

The phrasebook

Sources: PlanetF1 jargon guide, Formula1.com 2026 key terms, RacingNews365, The Drive, Motor Sport, Autosport.

What the rules allow

The 2026 sporting regulations deal with it in a single line, article B1.8.1: "The driver must drive the F1 Car alone and unaided." The FIA has tried to police that line before. In 2014 it banned messages about a driver's own performance and said coded instructions would not be tolerated. Two years later race director Charlie Whiting said coaching had reached "an intolerable level" and handed teams a short list of permitted messages. "They can't be told power unit settings, to change the state of charge, mixtures," he said.

The clampdown lasted four months. In Austria, Mercedes and Force India were not allowed to warn their drivers about failing brakes. Then Jenson Button was penalised in Hungary for receiving a message from McLaren as he faced an impending brake failure, and the ban fell apart. From the German Grand Prix onwards the FIA took "a more liberal approach", with no limits on messages except between the start of the formation lap and the start of the race.

Ten years on, that freedom is why a 2026 radio channel can sound like a driving lesson. In China, Lambiase asked Verstappen to "increase the lift off by around 50 metres Turn 14 and Turn 1" and to go "easy on the brake pedal as well into those two corners". Whiting would have recognised it as precisely the corner-by-corner help he tried to stamp out.

Who is listening, and why the codes

The 2016 settlement also obliged teams to give F1's commercial rights holder "unrestricted access to their radio messages at all times their cars are out of the garage". Formula One Management chooses the clips for the world feed and runs them on a delay so the swearing can be bleeped. Fernando Alonso complained last year that the messages are "misunderstood 99.9% of the time because they are private conversations with your engineer".

Rival teams are listening as well. Mercedes' Andrew Shovlin said the team uses "secret codes" to tell drivers whether they might want to pit under a safety car, and "we change them every single week". At the Spanish Grand Prix in September, Antonelli knew he was in the window for a VSC. Bonnington confirmed it, and he dived into the pits while Lando Norris missed out. In Singapore, with his radio barely working, Verstappen said Lambiase "did try at one point to ask me a few things in code".

The battery talks back

Before the season, RacingNews365 predicted that juggling power, aero modes and the battery would become "a constant dialogue between driver and team via the onboard radio". Esteban Ocon put it more bluntly in February: "So I would say it's 20 per cent on us, 80 on the engineers."

Verstappen's season bears that out. In Melbourne, Lambiase talked him through a VSC restart, ending with "press and hold boost for two or three seconds". At Suzuka Verstappen snapped: "You need to advise me faster what to do with the battery when I'm fighting, where then to lift. I hear nothing." Lambiase later suggested he "think about getting yourself some free overtake": let Oscar Piastri through before the detection point and bank the extra half a megajoule. And at Spa a single Lambiase message read "Display three, position four", which only makes sense if you are holding the wheel.

Get the energy sums wrong and the world hears about it. Told before the start at Spa that his state of charge was in a good place, Russell lost three places on the Kemmel straight, later spun off after contact with Hamilton, and raged: "Had no f**king battery down the straight!"

Singapore: the question nobody answered

Hamilton started on mediums, struggled on them and pitted for softs on lap 18. Later in the race he wanted one number: "How was everyone's pace at the end of their run?" Santi gave him the current lap times. Hamilton asked again, "At the end of their stint, how fast were they going?", and got the team's view instead: "At the moment, we don't think you have the [tyre] life." Then came Plan B and Hamilton's VSC suggestion.

When Lance Stroll's retirement brought out the VSC with the Ferraris running second and third, both were called in. Leclerc stopped and went on to finish second. Hamilton missed the entry, stayed out and lost places to Leclerc, Antonelli, Norris and Piastri. "He was crystal clear on the radio," said Fred Vasseur. Hamilton took the blame himself: "Sorry boys, I let you down today with that strategy." PlanetF1's analysis traced the root cause to poor communication between team and driver, while GPFans noted a seven-minute gap in the radio on Hamilton's onboard TV feed around the VSC.

Austin brings a new voice to Red Bull's radio. PlanetF1 reports that Tom Hart will stand in for Lambiase at the United States Grand Prix, before taking over full-time in 2027. Will Verstappen and Hart click from the first battery fight at the Circuit of the Americas, or will a new partnership need time to find its shorthand?

Our scorecard

Our verdictLet the engineers talk. The 2016 radio ban meant drivers could not be warned that their brakes were failing, and it made nobody safer. The bigger issue in 2026 is how much translating these cars need. When a four-time champion has to ask where to lift and when to press a button, the battery is setting the agenda on the radio. Hamilton owned the strategy call in Singapore, and said so, but it began with a straight question that never got a straight answer. Simplify the energy rules so the radio can go back to "box, box", and let viewers hear the question as well as the answer. Will Ferrari give Hamilton his numbers in Austin, or is another missed call waiting?

Sources: FIA, 2026 F1 Sporting Regulations, Issue 05; Formula1.com, What does a race engineer actually do?, 2026 key terms and the 2014 radio ban; Autosport, coded messages in 2014, Whiting on coaching, Austria's brake failures and the restrictions lifted; PlanetF1, Hamilton's Singapore radio, Singapore strategy analysis, best team radio of 2026, Verstappen's radio in Australia, China, Japan and Belgium, Verstappen's new race engineer, lift and coast in 2026, FOM's radio choices and F1 jargon decoded; GPFans, Hamilton's radio blackout, Mercedes' secret codes and 2026 race engineers; Reuters via The Star, Hamilton's pit lane miss; Motorsport.com, every race engineer in 2026; Motor Sport, drivers on radio broadcasts; RacingNews365, the new F1 dictionary for 2026; The Drive, how an F1 steering wheel works. Facts as reported up to 14 October 2026; opinions are ours. See all headlines on the wire