Code-Switching in Post-Soviet Urban Space: A Linguistic Landscape Dataset from Baku and Northern Azerbaijan Through Field Research

Field Research Project - This dataset documents multilingual signage and speech in Baku, Azerbaijan and the surroundingregions, with a focus on code-switching and language contact phenomena in post-Soviet urbanand rural Azerbaijan.The dataset captures how Azerbaijani, Russian, English, and minority languages (Lezgi,Talysh, Khinaliq, Udi, Tsakhur, Avar, Georgian, Armenian) mix in everyday commercialsignage, public announcements, menus, street signs, and spontaneous spoken interaction.Every entry includes full provenance metadata - GPS coordinates, timestamps, and cameramodel extracted from EXIF data, reverse-geocoded location via OpenStreetMap, and clearsource attribution for all three data sources. Every AI-generated field is labelled withits source so researchers can distinguish machine-generated annotations fromresearcher-verified data. Data source - Photos taken by the researcher, Native speaker audio recorded by the researcher, Language Educator Audio