How to Read the Trackside Timing Screens at an F1 Race

Timing screens cycle through multiple modes: running order with gap columns, sector timing, fastest laps, and pit status. They do not show one fixed view.

INT column: gap in seconds between this car and the car directly ahead of it. GAP column: gap between this car and the race leader. These are different numbers and should not be read interchangeably.

Sector time colours: purple means the outright fastest time set by any driver in this session at that sector. Green means this driver's personal best for that sector in this session. Yellow means this driver has gone slower than their own best.

In 2026, a gap below 1.000 seconds in the INT column means the chasing car is entering the MOM activation window.

Screens update every 2 to 3 seconds. The position of a car on the screen lags slightly behind where the car physically is on track.

Most first-time attendees expect the timing screen to be a fixed leaderboard. What actually appears is a rotating sequence of displays, each showing a different slice of the race data. The rotation takes roughly 30 to 60 seconds per full cycle at most circuits.

The main modes are: running order with INT and GAP columns, sector timing (each driver's most recent split through each of the three track sectors), fastest lap table (updated after each new personal or outright best), and pit status (flagging which cars are currently in the pit lane or have been noted by officials). Some circuits add a tyre compound indicator showing current rubber for each driver.

The sector timing display is the most information-dense of the modes and the most commonly ignored. Understanding it is what separates someone who can follow the race from someone who can only read the positions.

At major circuits (Silverstone, Barcelona, Montreal), large LED panels are positioned at each main grandstand complex. At smaller venues, screens may only appear at the pit straight and one or two other positions. Check the circuit's seating map before you choose your grandstand if screen visibility matters to you.

The running order display shows two gap columns for every car below P1. INT (interval) is the gap in seconds between this car and the car directly in front of it in the running order. GAP is the total gap between this car and the race leader.

A driver running in P5 might show INT: +2.4s and GAP: +38.9s simultaneously. The INT tells you there is a 2.4-second gap to P4, which may or may not be a developing battle. The GAP tells you this car is 38.9 seconds behind P1, which tells you nothing about the immediate racing situation unless you are watching a leader-chaser situation at the front.

For following on-track battles, the INT column is the one that matters. When a driver's interval falls below 2.0 seconds across two or three consecutive laps, an attack is building. When it falls below 1.0 seconds, the chasing car is within the MOM eligibility range in 2026 and a deployment attempt is possible on the next straight.

The GAP column is useful for understanding strategy: if a driver makes a pit stop and rejoins the race with a GAP of +45s, you can compare that to the gaps of cars running ahead to see whether the undercut has worked or whether they have rejoined in traffic.

Purple means the outright fastest time set by any driver in this session in that sector. A purple sector time is a session record at that split point. Green means this driver's personal best for that sector in this session (faster than their own earlier laps, but not necessarily faster than any other driver). Yellow means this driver has gone slower in that sector than they have on a previous lap in the same session.

A driver showing yellow in S3 while green or purple in S1 and S2 is losing pace in the final sector only. This is often the earliest visible sign of front tyre degradation: the tyre loses grip through the higher-speed final corners before the overall laptime shows a clear decline. Spotting this pattern on the sector screen before it shows up in the lap times is one of the more useful things a trackside timing screen can tell you.

During qualifying, sector colours show you in real time whether a driver on a flying lap is building towards a pole lap or falling short mid-lap. Purple in S1, green in S2, yellow in S3 means they lost it in the final sector and the overall time will not be a banker.

During the race, interpret sector colours with more caution. Cars are on different tyre ages, fuel loads, and strategic phases, so a yellow sector may reflect a deliberate tyre management decision rather than a performance problem.

The single most common mistake when reading trackside timing is treating the current INT number as the complete picture. What that number was three laps ago, and what it is now, is the actual information.

A driver whose INT reads 1.8s, then 1.2s, then 0.7s across consecutive laps is closing at roughly half a second per lap. An overtake is likely within the next two to three laps if the gap continues falling. A driver whose INT reads 0.7s, then 1.1s, then 1.4s is being held off: the car ahead is managing the gap rather than running away from it.

Watch for three consecutive laps of data before drawing conclusions. A single lap with a reduced gap can be caused by a slow sector from the car ahead (yellow sector in S3, for instance), not a real pace difference. If the gap is consistently falling across laps with consistent sector colours for both cars, the attack is real.

When a car makes a pit stop, the INT column for the car that was previously running behind it will reset to show the new gap to the next car ahead in the running order. If the pitting car's nearest rival is now 20 seconds up the road, the INT for the car behind will suddenly show +20s or more. This looks like the gap has opened dramatically. It has not. The reference car changed.

After any stop cycle, give the timing screen two or three laps before using INT values to assess battle states. The first post-stop lap often shows inflated or deflated gaps that reflect position reshuffles rather than genuine pace differences.

The timing screens also cannot show you why a gap is what it is. A driver holding a 5-second interval behind the car ahead might be pushing flat out and losing ground slowly, or managing tyres and holding station deliberately before a late-race push. The screen shows the result. The F1 app on your phone adds tyre age (lap count on the current set) and pit stop history, which provides the context the screen leaves out. Download the session data before entering venues with limited signal coverage, which applies at most F1 circuits at some point during race day.