An article well worth reading: https://www.whichcar.com.au/car-advice/6-fundamental-driving-techniques-youre-probably-getting-wrong
One of the most surprising quotes from the article states:
“You’d be amazed how many people have their wing mirrors permanently pointed downward to make parallel parking easier, or have their rear-view mirror pointed toward their face so they can apply makeup or check for stray spinach between their teeth.”
Really? People actually do this? I had no idea. But it explains so much about some of the things I have seen people do on the roads.
“indicators are for informing other drivers of your intention to move across lanes, and are not a right-of-way toggle”.
Some very handy information right there.