I always try to sit right at the back if I can. Easier for me to see where I am, note the landmarks that are useful and generally see just where I am.
I've had a new passenger climb aboard and try to squeeze in between me and the outside frame


Then look at me so strangely because I'll not yield my position.
Only in the Philippines.
If I'm seated anywhere else I'm always happy to scoot along and make space to where they want to sit. But once I've got that last rear seat position I'll keep it come 'hell or high water'

I do enjoy my jeepney rides......so many wonderful views