Priority, safe gaps, and the system for a safe overtake
Three different situations, meeting oncoming traffic, crossing another road user’s path, and overtaking, but all three ask the same underlying question: is there genuinely enough room for everyone involved, or have you just assumed there is because stopping felt inconvenient. Overtaking in particular is one of the few driving errors that offers no opportunity to correct it once you’ve committed, which is exactly why it deserves more caution than confidence.
Meeting
When you meet an obstruction with oncoming traffic involved, the first thing to establish is which side the hazard sits on. If it’s on your left, your own side of the road, you don’t have priority, you’re the one who has to move out to get past it, so the oncoming vehicle, staying in its own lane, has priority over you. If it’s on their side, your right, priority runs the other way, it’s their move to make around it, but that only matters if they actually give way to you rather than pushing through. Watch speed and distance, not just position, before assuming either of you has been given the priority you think you have. You may still need to hold back or ease in slightly to the left to leave a full gap for everyone to pass safely, a gap of about a metre being the minimum worth aiming for.
A simple technique helps here: the moment you spot where the road actually narrows, check your mirrors and ease off the gas. That small pause is what gives you the moment you actually need to decide, rather than arriving at the narrow point still working it out.
When the obstruction is on your left, positioning early helps too, position for vision, vision for decision. Getting into position sooner gives you a clearer view past the hazard and further down the road, and that view is what the decision actually depends on.
Used together, spotting the narrowing point early and positioning for vision, complex meeting situations, several hazards close together, a queue building on the other side, become far easier to read than they look at first glance.
Crossing
Turning right across oncoming traffic, or crossing any other road user’s path, comes down to the same test raised earlier in this series for junctions: picture someone walking across the same gap. If they could cross without causing a single vehicle to slow, brake, or swerve, you likely have enough room to drive it. If you’re not confident of that, you don’t have enough room, whatever the gap looks like at a glance.
Overtaking
On a single carriageway, the routine is Mirror, Position, Speed, Look, Mirror, Signal, Manoeuvre. Look well ahead, identify the vehicle you intend to pass, and pick a safe gap in oncoming traffic before you commit to anything. Check your mirrors, signal, and move out only once you’re certain, then complete the manoeuvre in as straight a line as possible, maintaining your speed rather than reducing it, since slowing down mid-overtake is usually what turns a safe gap into an unsafe one.
A dual carriageway removes much of the need to change position or speed at all. Look ahead, choose your gap in the lane you’re moving into, check mirrors, signal, and move across smoothly, ideally without losing speed at any point. Coming back to the left, wait until you can see the front of the vehicle you’ve passed in your rear view mirror, check your left mirror, signal, check again, then move back in.
If there’s no gap offered to you in a busier lane, signal your intention and hold your position rather than drifting across, wait for another driver to either flash you in or drop back to make room, and always confirm their intention before you actually move, a thank you afterwards costs nothing.
Clearance
Passing anything stationary, a parked car, a cyclist, a horse, needs early planning and an early MSM, not a late swerve. Leave at least a metre for a parked car, in case a door opens or someone steps out from between vehicles, a door’s width, or a big step, whichever image actually helps you judge it. Leave at least two metres for a cyclist, who can wobble more than their line suggests. Leave as much room as the road reasonably allows for a horse, and slow right down doing it, an engine note or a sudden noise can unsettle an animal in a way it never would a person.
Rather than relying on a fixed marker, look into the space ahead that you actually intend to take, and let that judgement set your speed rather than the other way round, the smaller the gap, the lower the speed needs to be. On a narrow street, the minimum safety gaps described above sometimes can’t be kept in full, and when that happens, it’s the speed that gets sacrificed to compensate, not the gap.
Why This Matters for Teaching
Overtaking is the one situation in this entire series where a wrong decision genuinely cannot be undone once you’ve committed to it. That’s worth saying to pupils directly, not softening. Every other manoeuvre and every other judgement call in this series allows some form of correction, stopping, waiting, trying again. An overtake, once started, has to be finished. Teaching the discipline to simply not commit when there’s any real doubt matters more here than teaching the mechanics of how to do it well.
Next in the series: Show Me, Tell Me Questions, covering the vehicle safety questions candidates need to answer at the start of every practical test.
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