It would fit with how weird people's clothes are here. But having no food is so strange. Are the restaurants and grocers inside the buildings? He wants to enter one, but...it looks weird and scary so he will do Not That.
After a few minutes, he realizes that the glyphs do not correspond to any writing system he knows. That, in and of itself, is not alarming – True artificers can put enchantments on objects that put concepts directly into minds – but he cannot detect any True energy from the sign. Is it an Open effect? It seems like it would fit...though there isn't any of that either.
He casts Becalm on himself.
He wants to ask for help, but he doesn't want to accost the arbitrary people walking about. He will continue walking the streets and wait until he finds something that seems like a government office. He bears the mark of the Ancient and Charitable Society of Solace on himself and on his robe, and it is one of the oldest and most eminent of the Societies. If worst comes to worst, he can pay to send an Openetelegram and ask his Society to intercede on his behalf.
Wait. If he's indeed on the other continent...this wouldn't work. But surely the other continent would still have a surviving lineage of the Society? The Way of Tranquility is the Way that endures, the Way that preserves, the Way that lasts, the Way that remains. Anyway, he can testify to the same under truth ritual.