Aside from the dreadful traffic we have on our little island, inconsiderate driving is a major reason for an unsettled drive home.
There are certain rampant cases, for example, at a junction when the car in front can either go straight or make a right turn but there's no signal from the joker. Or when you intend to make a right turn out of a secondary lane, and the oncoming car from the right who wants to turn left doesn't signal his intention, leaving you stranded for safety reasons and missing the opportunity to turn.
And then there are times when you want to change lanes, but the clown tries to be funny and closes up the gap, not allowing you to pass. That's not all, how about those jerks that tailgate as though they are going to miss their flight?
And just when you think things are looking up, you turn into the carpark, only to find drivers who park like crap. The usual suspects are those who love to cross the allocated boundary (thankfully for one), those who have parallax errors of a good 20 to 30 degrees, the huge ass truck driver who should jolly well park in the heavy vehicle carpark as well as those who park horizontally in a vertical lot (rarely, but believe me, they exist).
Perhaps this is one of the pet peeves I have besides our infamous COE system and what nots. Then again, who doesn't have one?