In the U.S., it took quite a lot of pressure by citizens to force the state legislatures and all the various police agencies to take drunk driving seriously. In the 1970s, driving drunk was mostly ignored, unless some innocent was killed, and even then the drunks only got short jail sentences.
If you want it to change in Taiwan, you will need to get grieving parents to harass your lawmakers into passing mandatory sentencing laws, removing any judicial discretion. Then you need to shame police into not taking bribes to let people go -- or set up incentives so that police get departmental funding or extra pay/vacation/whatever for catching drunks.
It's amazing what getting out of the care of the Scottish National Health Service can do for your life expectancy.
"Mostly, nature looks after itself, if you let it. If you arrange things correctly, nature will do all the hard work for you, but it takes a lot of careful thought, planning, attention to detail, and a little experimentation. In other words, we're all doomed." -- finley