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Ah. human nature then: "You wont' let me overtake? I'll undertake.
THAT'LL TEACH YOU PHYSICS!!!
Reading that article it seems having such "one off" speed checks really isn't helping.
The Netherlands has many "average speed" lanes. So, if you overtake somebody at 130, and the average speed is 120, you have to drop back a little. But you won't get a fine. And yes, there are apps to track your average.
In town of course the speed cameras do work with a "one off" system, cos there's no reason to overtake at 40 in a 20 zone.
JWestland-
Average cameras might help but the signed speed cameras don't really work. Look at the UK - people jam on the anchors when there's a camera but are straight back on the go pedal when they've gone past the camera. In Oz it's not just one-off cameras, they're everywhere and you don't know where they are - result? Fewer people speed because there's far higher risk of fines, etc.
"Started with a small trial in 1985 using signed cameras with minimal effect. The major introduction was at the end of 1989 with hidden speed cameras starting at around 500 hours/month increasing to 4000 hours/month by 1992. During the testing of the cameras the percentage of drivers speeding (over the speed camera thresholds) was 24% and by the end of 1992 this had dropped to 4%. The revenue collected by each camera dropped from $2000/hour to $1000/hour over 18 months. The road toll dropped from 776 in 1989 (no cameras) to 396 in 1992 (49% drop)."
https://en.wikipedia.org/wiki/Road_speed_limit_enforcement_in_Australia#Victoria
As has been drilled into me by the TAC... "speed kills".
hippy
We have shitloads of speed cameras, marked and unmarked police cars with speed cameras fitted. None of this namby pamby pretend speed camera nonsense they do here. Undertaking is commonplace though: https://practicalmotoring.com.au/voices/the-australian-overtake/