What's a rule that was implemented somewhere that massively backfired?

My city has issues with loud bikes and vehicles.

So, as a deterrent, the city put up decibel meters that displayed how loud your engine is,

similar to those signs that read your speed and display it to you.

But instead of deterring anyone, people would pull up to those signs and rev the heck out of their engines to see who could get the highest decibel count.

The city took the counters down within a week.

I work in manufacturing and we get paid piece rate, so the more I run, the more I get paid.

We also have a base hourly pay rate of $10 per hour. So whichever pays more,

the hourly rate or the piece rate, is what we get paid for the day. On bad days, sometimes

they bump us up to $12 an hour for the day. And when we train new people, we get paid $15 an

hour to compensate for having to slow down or stop our machines to teach the new people. The big boss,

my boss's boss's boss, came in last week. Now, he used to work the line like I do now, but you can tell

he's living comfortably in his corporate life and has forgotten some of the bad parts of this job.

He told my boss that we are no longer to receive training pay because, by his logic, if we're

working with someone, we should be making more than $15 an hour anyway. And these past three weeks

or so, we have been doing a lot of training. So a few of us got together at the end of the day and

agreed. If they aren't paying us, we won't train people. We will teach the new people enough

to make us some money and leave the

training to the designated trainers. Two people split between 15 or so new hires, but they make $17.50 an hour.

The policy lasted four days. Buddy of mine told me about a happy hour promotion, a bar ran, close to his

campus. Apparently the special was something stupid like 50-cent beers

that lasted until the first person went to the bathroom. As he tells it, the first few weeks

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