People who fail to reach cruising speed before merging onto the freeway (or equivalent in your country), and people who drop below cruising speed before having fully exited the freeway.
People here all do 110km/h in a 90 zone anyway so to "reach cruising speed" would require me to first break the law and the merging lane isn't long enough to have time to select a free spot to merge into when doing 110km/h, it was designed for a specific merging speed in mind. So I drive typically 10km/h under the 90km/h speed limit and wait for a very wide opening, sometimes stopping in the merging lane if I have to. That is on the bypass that is. not on a major highway.
Don't get me started on the people who do 130km/h in the fast lane (on a 90km/h roadway) and come up behind you with super bright illegal headlights and blind you. Very dangerous. Very stupid. But just about every prick where time is money (tools in the back of a ute tray on an illegally lifted 4x4) does it.
And don't get me started on the number of people that have been killed by legally/illegally lifted 4x4s. They are everywhere and are around massive amounts of smaller vehicle traffic. Every few months I hear of a death involving a 4x4 and a small granny in her car. Just a few years ago a 4x4 killed a kid on a beach because the driver went over a sand dune blind. Fucking ban them.
At least the same people wisened up and started this speeding split nonsense. It used to be much more unsafe and people would often speed in the slow lane too, often in bumper to bumper traffic too.
Tell me what about speeding over the speed limit and staying 1 meter off the bumper of the car in front of you is smart? Its often not just one car either its dozens of cars all doing this at the same time. Sometimes with passengers in the back of small compacts. Its idiotic.
The rulebook says that you must not speed under any circumstances even during overtaking. Overtaking is meant for getting around slow traffic that does under the speed limit not traffic that is doing the speed limit just because you wanted to act like a dick and show the rear end of your arse to the car thats currently in front of you. Yet people do this on mass.
And I would get shouted at for having this opinion. Very much so. Even if I'm driving with kids in the car or with trucks around me they don't care about you and they wish the death on you.
Why is australian motoring so aggressive anyway. There is often very little time to stop when you see a Yellow light and you are regularly expected to go through the yellow light because often the car behind you is travelling so close that you cannot possibly stop quick enough. Yet this is stretched to the extremes, around here I often see people who see the yellow light and its already just about to turn red but they continue to drive anyway because its simply too dangerous to stop or because they are impatient (though tbh there are a LOT of traffic lights around here.) Almost every day I see cars punching red lights. If there isn't a red light camera there that intersection is guaranteed to get cars regularly going through red lights. They should extend the time on period for yellow lights and match it with the speed of the road behind them but that won't happen. If the RTA did that then people would take advantage of that "loophole" and continue to punch red lights only more aggressively.
Yet the road rules say that you should be slowing if you see a yellow light, if anything most people speed up.
I try not to understand the intelligence of the common motorist.
I don't know what the current rule is in other States, but in WA, there is no such thing as a "fast" lane.
If you can, on a normal multi-lane road, you are expected to try to return to the left (Kerbside) lane if you aren't passing.
On the Freeways, & controlled access roads, that is not practical, & often there are several lanes flowing simultaneously at just
under, or a tad over, the speed limit.
On the longer sections of these, the speed limit is 100kmh, but you see a few loonies trying to go faster---hard to do so at peak times, though.
Interestingly, the open road speed limit in West Oz is 110kmh--back in the 1960s, it was unlimited!
When I went to the UK many years ago, the "slow" & "fast" lane idea was pretty strictly policed, & I found it quite alarming, as from time to time, you had to change lanes, & took your life in your hands each time, with the crazies steaming down the "fast lane" at 100+ knots in their Jaguars, etc.
Screaming along in a "Ford Pop", trying to complete a passing manoeuvre around something even more dire than the Ford, with some rich twit sitting a handspan behind your rear bumper, puts some of the Oz crazies into perspective.