29/07/2026
The Roundabout Squeeze: Mastering Lane Discipline!
Bit of a long one, but an Important one today
Take a look at this footage taken from my dash cam today. I was established in the left lane in the Focus, taking my exit, when a dark Volvo SUV suddenly cut across from the inside lane to squeeze directly in front of me. Thankfully, by anticipating the hazard and keeping a safe following distance, a collision was easily avoided.
As an ADI, I see this happen all too often. Let’s break down exactly how we should approach roundabouts and why lane discipline is so critical.
📍 Which Lane Should You Choose?
Unless road markings or signposts tell you otherwise, here is the standard Highway Code framework we teach for standard, two-lane roundabouts:
Taking a Left Turn (1st Exit): Check your left mirror and signal left on approach. Approach in the left-hand lane, stay in the outer lane on the roundabout, and keep the left signal on until you exit.
Going Straight Ahead (Intermediate Exit / Up to 12 o'clock): No signal on approach. Approach in the left-hand lane. Stay in the outer lane. Check your left-hand mirror, then apply your left signal after you pass the exit right before the one you want to take.
Turning Right / Going Full Circle (Past 12 o'clock): Signal right on approach. Approach in the right-hand lane. Stay in the inner lane while navigating the roundabout. Crucially, check your left-hand mirror, then apply your left signal as you pass the exit before yours, before moving over to exit.
Remember always check and follow road markings and signs.
🛡️ How to Correct a Mistake
We all make mistakes, but how we react to them defines our safety on the road.
The "Wrong Lane" Golden Rule: If you realise you are in the wrong lane, do not panic and never cut across traffic.
The Fix: The safest option is to simply go all the way around the roundabout again, or take the exit your current lane dictates and find a safe place to turn around later. It costs 30 seconds—far better than a costly collision!
🎯 The "Why": The Bigger Picture
Predictability: The roads work best when we all know what to expect from each other. Clear lane choice, mirror checks, and proper signalling remove the guesswork.
Blind Spots: Vehicles in the outer lane are very easily hidden in your nearside blind spot when you try to cross from the inside lane. The driver of the Volvo assumed the space was empty—which it clearly wasn't!
Defensive Driving Takeaway:
For all my learners and experienced drivers out there: always expect the unexpected. Just because you are in the correct lane doesn't mean the driver beside you won't make an error. Keep your eyes scanning, manage your speed, and always leave yourself an escape route.
Have you ever had a close call like this on a roundabout? Drop a comment below!
Stay safe out there,
Craig, The Bearded Viking.
