[archleaf]

Is this something new within the last year? I just travelled on Flixbus across Hungary, Slovakia, and Poland and received no checks.

Is it only certain countries?

[ben_w]

> Is it only certain countries?

Every country can choose independently, and for each border. From a cursory search, it appears e.g. Poland currently only checks the borders with Germany and Lithuania. You'd have missed any checks on your specific trio, if this list was true at the time:

https://home-affairs.ec.europa.eu/policies/schengen/schengen...