This article is from 2016, and it should be noted that things have significantly increased since then. I no longer have to click traffic lights and motorcycles, I just have to wait a few seconds. I'm in Vietnam so my IP gets flagged for checks a lot, but they all pass automatically in a few seconds.

The only time I still get asked to click motorcycles is not Cloudflare, it's Google. They absolutely hate when you try to do a search in an incognito window and will give you an unpassable captcha until you give up and use DDG instead.