One of the areas I've made the LEAST progress in is anger management. Causes me a lot of grief, a lot of consequences. So yeah, getting lost is a huge trigger. Traffic too, but only if time/being late is an issue (it usually is, and i usually am!, but time management is another thread altogether). One of my anger triggers is when people arent doing their jobs properly. I'm terrible when i have to talk to customer service anywhere about anything. But then, if i spent time on it and resolve it, only to find out at a later date it wasnt resolved at all, well I pitty whoever gets to deal with me on the phone. What i think the real underlying cause of my anger is, is zero frustration tolerance. Im pissed off so fast, i dont know what hit me. It just IS.
Now, My husband (also on the spectrum) gets mad at inanimate objects more than at people. If he trips over a shoe, he curses at it, throws it, and might give a loud treatise on why shoes are useless and should be banned.