The original car being overtaken either has to speed up to get around the slower car or drop their speed further or change lanes. Now let’s say this trio of cars – two in the Australian Overtake, and one behind – happen upon another car which is doing say 95km/h in the middle lane. And even if they did, then their slowing down will cause the car behind to slow down a bit more, then the car behind that a bit more again, and that’s exactly how traffic jams build up over time. Your car might be spot-on accurate and so you’re still stuck trying to legally pass slower traffic.īack in reality – if someone is travelling at say 102km/h they aren’t likely to want to drop to 97 or lower just because there’s a blockage ahead, and that’s a simple fact of human nature. So a new SUV sitting in the middle lane could be sitting at exactly 100km/h on the speedo, but in reality, they are doing 97km/h. Instead, you’re side by side with the other car for the rest of eternity, a dual-lane rolling blockage.Īnd it’s compounded by the fact that nearly all new cars have a speedo that’s inaccurate, legally to ADRs, by up to 10 percent plus 4km/h. And with increasingly heavy fines for exceeding the signed limit by only the smallest of margins, you certainly don’t want to increase speed to about 103km/h as you run the risk of a fine. Then you’re in overtaking limbo…unable to complete the overtake, but unwilling to drop back and start again. The car being overtaken might speed up just a fraction, or you may slow down a touch. And that’s assuming you maintain an even 2km/h overtake rate. That overtake at a speed difference of 2km/h means you’ll need 90 seconds to get past, over which you’ll travel 2.5km.
In order to pass you might pull out when you’re, say, five car lengths behind, and maybe pull in when you’re five ahead. Ahead is another driver doing 98km/h, and eventually you draw close enough for an overtake. SO THERE YOU ARE, cruising at 100km/h exactly on the freeway, in the middle of three lanes (legally, in Victoria ).
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