Overtaking and passing rules in Australia (including lines)

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When you’re actually allowed to overtake

Overtaking is legal only when everything lines up at once. Under the Australian road rule you must have a clear, unobstructed view of the road ahead— far enough to see any oncoming vehicle and complete the pass before it reaches you. You need a real gap: room to pull out, get fully past, and return to your side without forcing the vehicle you passed to brake or move over. The line marking must permit it (more on that below), and you must be able to finish the whole manoeuvre inside the speed limit. Overtaking is one of the highest-risk things you do on a road, because on a two-lane highway the closing speed with an oncoming car can be 200 km/h or more, so the test for ’is it safe’ is deliberately strict. If you find yourself asking whether there’s enough room, there isn’t— hold your following gap and wait for a clearly safe stretch such as an overtaking lane or a long straight with good visibility. On a driving test, a calm decision to wait never fails you; a rushed pass does.

Which side: overtake on the right, not the left

The default is that you overtake on the right— you move out to the right of the vehicle in front, pass, then return to the left. The Australian road rule makes overtaking on the left an offence except in set situations: when the vehicle ahead is turning right or making a U-turn and is signalling right; when you are on a multi-lane road and the traffic in your marked lane is simply flowing faster than the lane to your right; or when the vehicle is stationary. That distinction matters on a freeway: passing in the left lane is fine when lanes are genuinely moving at different speeds, but deliberately darting into the left lane to sneak past a slower car is not. Whenever you do move out, signal right first, check your mirrors, then take a head check over your right shoulder for anyone who may already be overtaking you. Move out smoothly, and signal and check again before you come back left.

Reading the lines on the road

The dividing line down the centre of the road tells you whether overtaking across it is allowed. A broken (dashed) line means you may cross to overtake when it is safe. A single continuous (unbroken) line means you must not cross it to overtake. Where a continuous line and a broken line run side by side, you obey the line closest to you: if the continuous line is on your side you cannot cross; if the broken line is on your side you may cross when safe. Double continuous lines mean neither direction may overtake across them. No line at all doesn’t mean ’anything goes’— you must still keep left of the centre and pass only with a clear view. One trap catches many learners: a broken line can turn continuous partway through, so never begin an overtake unless you can clearly finish it before the line becomes solid. Rules for crossing a single continuous line to enter a property or to give a cyclist safe room differ between states— confirm the detail with your state road authority.

Pulling back in safely

Finishing the pass matters as much as starting it. The Australian road rule says you must not move back to the left until you are a sufficient distance ahead of the vehicle you passed to avoid a collision or cutting it off. A reliable habit taught by instructors: don’t indicate left and return until you can see the whole front of the overtaken vehicle— both its headlights— in your interior rear-view mirror. Cutting in too early is a common cause of merge crashes and is an instant fault on a driving test. Signal left, check your left mirror and left blind spot, and ease back gradually rather than swerving across. Keep the pass itself decisive but smooth: sitting alongside another vehicle for too long leaves you parked in its blind spot and stretches out the time you spend on the wrong side of the road— which is exactly where the danger is.

Places and times you must not overtake

Some situations rule overtaking out no matter what the lines say. You must not overtake where you cannot see far enough ahead— approaching a crest, a curve, a dip, or in fog or heavy rain. You must not overtake at or near a children’s crossing or pedestrian crossing while a vehicle is stopped or slowing for it, or at a railway level crossing. Never overtake a vehicle that is itself already overtaking. Watch for the long-vehicle sign reading ’Do Not Overtake Turning Vehicle’— a truck or bus may swing wide to turn, and passing it as it does so is both dangerous and an offence. Near intersections, roundabouts and merge areas, overtaking is usually unsafe and is often restricted; confirm the specific spacing rules with your state road authority. When you’re unsure, the underlying road-rule test is simple: if you cannot complete the pass with certainty and space to spare, you must not begin it.

Being overtaken, cyclists and long vehicles

Overtaking places a duty on the driver being passed too: you must not increase your speed while another vehicle is overtaking you. If someone is passing, ease off slightly and hold your line so they can complete it and return safely. When you are the one passing a bicycle rider, most states and territories now require a minimum passing distance— commonly around one metre in lower-speed zones and more at higher speeds— and they specifically allow you to cross centre lines or straddle lane lines to give that space when it is safe and the road ahead is clear. Because the exact distances and exemptions vary, confirm them with your state road authority. Give motorcyclists a full lane’s width when passing, never squeeze past a rider or cyclist, and remember that heavy trucks take far longer to pass than a car— only commit when you have a genuinely long, clear stretch of road.

Common mistakes learners make

• Speeding up to complete an overtake— there is no exemption to break the limit; if you can’t pass legally at the speed limit, don’t pass at all.
• Cutting back in too soon and tailgating the car you just passed, instead of waiting until you can see both its headlights in your interior mirror.
• Starting a pass on a broken line without checking there is room to finish before the line becomes continuous.
• Misjudging the speed and distance of oncoming traffic on a two-lane road— the closing speed is far higher than it looks.
• Overtaking on the left to sneak past a slower car when the lanes aren’t genuinely flowing— that is only lawful in the specific exceptions.
• Increasing your speed while being overtaken, which traps the other driver on the wrong side of the road.
• Forgetting the right-shoulder head check for a vehicle already overtaking you before you pull out.

Check the official source before you rely on this

Rules and pass requirements are set by each state and territory road authority and can change. Always confirm the current details with the official source for your state — Transport for NSW, VicRoads (Victoria), Queensland Transport, or the equivalent authority where you live. This page is a free study guide, not a substitute for the official handbook.

Last verified 4 September 2026 against the Australian Road Rules and your state road authority. Rules, fees and figures change. Always confirm current details with your state road authority before you rely on them.

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