The subway in Bulgaria's capital Sofia recently started giving bilingual audio directions - in both Bulgarian and English. Since the subway extension to the airport is scheduled to launch in April ...

In Sofia, implementation was delayed, as we did not receive support from the Sofia Municipality for a long time. To work in Google Maps , data must be real and real-time.

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. For many years, Sofia’s metro was, to many residents, almost incidental to the city. Your correspondent ...

In 14 years, Sofia's metro project has taken up nearly €1 billion from EU funds. It was declared "infrastructure project of the last decade" in Bulgaria. Due to be completed in less than two ...