It was few years back when I started working but not yet driving.. I went outstation with my colleague and she was the driver.
On the highway I told her to slow down...She asked me whats the speed limit and I said 10% of your current speed....
she said okay...how much is 10% of my current speed....wait, what kind of sign need drivers to do calculation on the road??
Then I show her the next similar sign:
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It looks like turning down the volume sign so it should be speed for vehicles right??
Kena marah kao kao and since then i became a joke in that company...
I'd say the road sign is not clear~