Is that a formula?

Eh? Bus stop name. «Ж/д», transliterated here as «j/d», is an abbreviation for «железнодорожный» (zheleznodorozhniy), or «railway», while Vokzal means «station».

While not translating bug stop names is probably a good thing, simply transliterating such abbreviation seems silly, and can probably cause more confusion than help.