Track Limits: The Circuit Has to End Somewhere

The BTCC season has finished, which means it’s time for everyone to argue about track limits again.
Between Tim Harvey’s comments, Dan Lloyd’s video and the usual social media discussions, you’d think somebody had suggested replacing all the racing cars with mobility scooters.
And I do understand some of the frustration.
Nobody particularly enjoys watching a brilliant bit of racing, only to discover five minutes later that the results have changed because somebody put a tyre slightly too far over a line. But I’ve got a fairly simple opinion on this. Track limits are absolutely necessary. And they should be strict. Because without them, what exactly is the point of having a circuit?

We’re All Supposed to Be Racing the Same Track

This is the bit I think gets lost in the arguments. The whole point of circuit racing is that everybody has to complete the same course. Same corners. Same straights. Same distance. You can take different lines, brake at different points and find different ways of getting through a corner. But you’re supposed to do all that within the boundaries of the circuit. That’s the challenge. If one driver can carry more speed by using an extra metre of tarmac beyond the circuit, why shouldn’t everyone else? And if everyone starts doing that, congratulations. We’ve just made the circuit wider. Except we haven’t. We’ve simply decided the original boundaries no longer matter.

Eventually, Why Bother With Corners?

Let’s take this to its rather silly conclusion. Imagine we remove track limits completely. Drivers will naturally find the fastest route around the circuit. That’s their job.
If going two metres wider on the exit of a corner means they can get on the throttle earlier, they’ll do it. If cutting across a kerb makes a corner effectively straighter, they’ll do that too. And why wouldn’t they? They’re trying to win. But gradually, we’re making corners less important. Every time we allow drivers to extend the circuit, we’re potentially reducing how much they need to slow down or turn. Keep doing that and we’ll eventually have a collection of straights connected by some very gentle bends. At which point, why not just build a banked oval and get on with it? Nothing against oval racing, by the way. It’s a completely different challenge and can be brilliant to watch. But that’s rather my point. Circuit racing is supposed to be about navigating a circuit. Not finding increasingly creative ways of avoiding bits of it.

But It’s Only a Few Centimetres!

This is probably the most common argument. A driver exceeds track limits by a tiny amount. A penalty follows. Everybody gets annoyed. But where do we draw the line? Literally.
If five centimetres is acceptable, what about ten?
Twenty?
Half a metre?
If we’re going to allow a certain amount of extra space, all we’ve really done is move the boundary. And drivers will immediately start trying to use every millimetre of that new boundary instead. Because they’re racing drivers. Finding the absolute limit is what they’re supposed to do. The solution can’t simply be to keep moving it whenever somebody goes beyond it. Otherwise, we’re going to need considerably larger circuits.

The Brands Hatch Problem

Last weekend’s BTCC finale provided another excellent example of why this is such a difficult subject. Aiden Moffat was fighting at the front in the opening race, but a five-second track-limits penalty dropped him from the podium to fourth. That’s a substantial consequence. Five seconds in touring car racing might as well be a fortnight. And I completely understand why people find that frustrating. We want to see positions decided by overtaking, defending and actual racing. Not somebody with a timing screen rearranging the finishing order afterwards. But here’s my question.

If one driver stays within the circuit boundaries and another repeatedly exceeds them, why should the driver following the rules be disadvantaged?
That doesn’t seem particularly fair either. The fact that a penalty changes the result doesn’t automatically mean the penalty is wrong.

Where I Think the Complaints Have a Point

Now, before somebody suggests I should be put in charge of race control and banned from ever driving a racing car again, I don’t think the current system is perfect. Far from it. There’s a difference between deliberately extending a corner to gain speed and running a few centimetres wide because another car has pushed you out. There’s also a difference between a genuine driving mistake and a questionable reading from a sensor. And some circuits don’t exactly help themselves. We’ve built enormous areas of smooth tarmac beyond the circuit boundaries. Which is brilliant for safety. But it also means a driver can sometimes run wide without losing any speed. Occasionally, they might even gain some.Then we’re surprised when drivers use it. Perhaps we need to be better at designing corners where leaving the circuit naturally costs time. Not necessarily by putting a concrete wall beside every kerb. That might solve the track-limits problem, but I suspect we’d develop a slightly larger problem involving insurance companies. There has to be a sensible middle ground.

The Rules Need to Be Clear, Not Just Strict

Under Motorsport UK’s current regulations, track limits are defined by the outer edge of the kerb, or the white line where there isn’t a kerb. Even part of the tyre’s contact patch going beyond that boundary can count as an infringement. That’s strict. Good. But it also means the system needs to be accurate. Drivers need to know where the limit is. Officials need reliable evidence. Warnings and penalties need to be communicated properly. And there needs to be a way of correcting mistakes. Interestingly, Motorsport UK’s 2026 regulations do allow certain track-limits penalties to be rescinded when appropriate onboard evidence shows the original decision was flawed or there were mitigating circumstances. That’s a sensible approach. At Silverstone in September, Moffat initially received a penalty which was later overturned after officials considered that one of his infringements resulted from avoiding another car. That’s exactly the sort of distinction we need. The boundary hasn’t changed. But the reason somebody crossed it matters.

I’ve Been on the Other Side of the White Line

I’m hardly going to pretend I’ve never exceeded track limits myself. I’ve spent years sim racing, where finding that final tenth of a second often involves discovering precisely how much kerb the game will let you use before getting angry. Sometimes you’re convinced you’ve driven a perfectly reasonable lap. Then the simulator informs you otherwise. But the principle is exactly the same. If everyone has to stay within the same boundaries, it’s fair. If some drivers are allowed to extend the track while others aren’t, it isn’t.

When I raced the Classic Mini at Brands Hatch in August, the thing I enjoyed most was actually racing other cars. Working out where to overtake. Trying different lines. Getting alongside people around corners such as Druids and Paddock Hill Bend. That’s what makes circuit racing enjoyable. If we can all just straighten the corners and drive flat-out everywhere, we’re removing part of the challenge. And frankly, with my limited racing budget, I’d quite like to get my money’s worth out of the corners.

Fix the Enforcement, Not the Principle

I think this is where the debate should really be heading. Are the sensors accurate enough?
Are the penalties proportionate?
Are drivers being given enough information?
Are some circuit layouts encouraging unnecessary infringements?
Can we distinguish genuine mistakes from deliberately gaining an advantage?

Those are all worthwhile questions. And if the current system is producing questionable decisions, absolutely, improve it. But the answer isn’t to abandon strict track limits. Because the moment you start allowing drivers to extend the circuit simply because it’s faster, you’re changing what they’re competing on. And somebody who actually stays within the boundaries is potentially putting themselves at a disadvantage. That’s not fair racing.

The Circuit Has to End Somewhere

Ultimately, I don’t think this needs to be particularly complicated. A racing circuit has boundaries. Everybody races within them. If you repeatedly go beyond those boundaries without justification, there should be a consequence. Simple.

We can argue about how infringements are detected. We can argue about how many warnings drivers should receive. We can absolutely argue about whether five seconds is appropriate for a particular offence. But the circuit itself needs to remain the same for everybody. Otherwise, we might as well get rid of the corners, put some banking around the outside and spend the afternoon driving flat-out. Actually, thinking about it, that could be quite entertaining. But it wouldn’t be the circuit racing we signed up for. Keep the track limits. Just make sure we’re enforcing them properly.