Everyday driving is part of how people experience a suburb, from the morning school run and the commute to work through to open home inspections, weekend errands and trips across town. Yet some of the road rules that affect those ordinary movements are also the ones most often misunderstood, especially where the answer depends on lane markings, speed limits, signs or the way a roundabout is used. A clearer understanding of these rules can make local driving calmer, safer and less argumentative.
Many road rule arguments start because two drivers are relying on different versions of the same rule. One person remembers a simple phrase from years ago, another remembers something from another state, and someone else is applying a rule that only works when the line markings, speed limit or road layout match the situation in front of them.
The Australian Road Rules provide the national model for road rules across Australia, but they are not one single national law that automatically applies in every state and territory. Each state and territory adopts road rules through its own legislation, usually with very similar wording and numbering, but with room for local differences. In Queensland, these rules are found in the Transport Operations (Road Use Management - Road Rules) Regulation 2009, which may also be cited as the Queensland Road Rules. That regulation is based on the Australian Road Rules and is intended to keep Queensland’s road rules substantially uniform with road rules elsewhere in Australia, which is why the national rule numbers are still useful reference points when explaining common misunderstandings.
This article is general information only and is not legal advice. Road rules, fines and enforcement settings can change, and how a rule applies may depend on the exact road layout, signs, lane markings and circumstances. If you have received an infringement notice, been involved in a crash or need advice about your own situation, check the current Queensland road rules or seek advice from a qualified legal professional.
Merging: The Line On The Road Changes The Rule
Merging is one of the road rules drivers argue about most because different rules apply depending on the type of merging situation. The key question is not simply which vehicle is further ahead, or which driver feels they should be let in. The key question is whether a driver is crossing a marked lane line into another lane, or whether two lines of traffic are merging into one after the lane markings have disappeared.
When lane markings have disappeared and two lines of traffic are merging into one, the vehicle that is behind gives way to the vehicle that is ahead. This is the rule people are often thinking of when they say “the car in front goes first”. The national reference is Australian Road Rule 149. In Queensland, the corresponding rule is found in section 149 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009. The rule applies where a line of traffic is merging with one or more other lines of traffic travelling in the same direction, and it requires a driver to give way to a vehicle in another line of traffic if any part of that vehicle is ahead of their own vehicle.
By contrast, when a driver is still in a marked lane and has to cross a lane line into another lane, the rule is different. In that situation, the driver changing lanes must give way to any vehicle already travelling in the lane they are moving into, even if their own lane is ending. The national reference for this marked lane change rule is Australian Road Rule 148. In Queensland, the corresponding rule is found in section 148 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009. The practical point is simple: if your lane runs out but you still have to cross a lane line to move across, you are changing lanes, so the traffic already in that lane has priority.
That difference matters. If there is still a lane line and one vehicle is moving into another marked lane, rule 148 is the starting point. If the lane markings are gone and two lines of traffic are blending into a single line, rule 149 is the starting point. The road surface usually tells you which rule you are dealing with.
Keep Left Unless Overtaking: The Speed Limit Matters
The keep-left rule is often repeated as if it applies on every multi-lane road, but the actual rule is more specific. The national reference is Australian Road Rule 130. In Queensland, the corresponding rule is found in section 130 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009.
In Queensland, section 130 applies in two separate situations. The first is the speed-limit trigger: a driver is on a multi-lane road where the speed limit is over 80 kilometres per hour. The second is the sign trigger: a Keep Left Unless Overtaking sign applies to that stretch of road. These are separate triggers, which means an ordinary 80 km/h multi-lane road is not automatically covered by the speed-limit part of the rule, but the rule can still apply on that road if a Keep Left Unless Overtaking sign is in place.
That wording is important because “over 80 kilometres per hour” does not mean 80 km/h and above. Without a Keep Left Unless Overtaking sign, the speed-limit trigger generally begins at the next usual posted speed limit, which is 90 kilometres per hour or higher. That is where many arguments begin, because one driver may be treating the rule as a general courtesy while another is thinking about the strict legal threshold.
Where the rule does apply, drivers should stay out of the right lane unless they have a recognised reason to be there, such as overtaking, turning right, making a U-turn from the centre of the road, avoiding an obstruction, driving in congested traffic, or following lane directions. The simple public version is accurate enough for most drivers: on higher-speed multi-lane roads, do not sit in the right lane unless you are actually using it for a permitted reason.
Roundabout Indicators: Signal Left When You Leave
Roundabouts cause confusion because drivers often remember only the entry signal and forget the exit signal. The better way to think about roundabouts is simple: signal for where you are going, then signal left when you leave.
The national references are Australian Road Rules 112, 113, 117 and 118. In Queensland, the corresponding rules are found in sections 112, 113, 117 and 118 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009. If a driver is taking the first exit and that exit is less than halfway around the roundabout, section 112 requires the driver to indicate left before entering and continue indicating left until they leave. If the driver is going more than halfway around the roundabout, such as turning right, making a U-turn or travelling beyond the right-turn exit, section 113 requires the driver to indicate right before entering and continue indicating right while travelling around the roundabout, unless they are changing lanes, entering another line of traffic or about to leave.
The part many drivers miss is the exit signal. Under Australian Road Rule 118, the Queensland equivalent is section 118 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009. It says that, if practicable, a driver in a roundabout must give a left change-of-direction signal when leaving the roundabout, and must stop giving that signal as soon as they have left. That means the normal habit should be to indicate left whenever you leave a roundabout, including when you are going straight ahead, unless the roundabout is so small, tight or awkward that it is not practicable to do so.
That left exit signal is not just a courtesy. It tells waiting drivers, cyclists and pedestrians that your vehicle is leaving the roundabout rather than continuing around it. On busy suburban roads, that small movement of the indicator can be the difference between traffic flowing smoothly and everyone hesitating because no one knows what the next vehicle is about to do.
The Simple Way To Remember These Three Rules
For merging, look at the lane markings first. If you are crossing into another marked lane, give way to the traffic already in that lane. If two unmarked lines of traffic are becoming one, the vehicle behind gives way to the vehicle ahead. In Queensland, those rules are found in sections 148 and 149 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009.
For keeping left, remember that the rule is tied to the speed limit or the sign. On multi-lane roads, it applies when the speed limit is over 80 kilometres per hour, or when a Keep Left Unless Overtaking sign applies. In Queensland, that rule is found in section 130 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009.
For roundabouts, remember the full sequence. Indicate left when turning left. Indicate right when going more than halfway around. And, most importantly, indicate left whenever you leave the roundabout, if it is practicable to do so. In Queensland, the main roundabout signalling rules are found in sections 112, 113, 117 and 118 of the Transport Operations (Road Use Management - Road Rules) Regulation 2009.
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