The bus, which officials said had 52 people on board, mostly North Macedonian citizens, was one of four people returning from a trip to Istanbul. Turkey. It hit a highway railing in western Bulgaria, caught fire and burned to the shell. Officials said the passengers were trapped because both exits were blocked.
https://www.washingtonpost.com/world/official-human-error-likeliest-cause-of-bulgaria-bus-crash/2021/11/25/04852e68-4e03-11ec-a7b8-9ed28bf23929_story.html?utm_source=rss&utm_medium=referral&utm_campaign=wp_world Official: Human error may have caused the bus crash in Bulgaria