Man pages matching name travel::routing::de::vrr in section 3pm:

Travel::Routing::DE::VRR.3pm.en	debian 10 / libtravel-routing-de-vrr-perl
Travel::Routing::DE::VRR.3pm.en	debian 11 / libtravel-routing-de-vrr-perl
Travel::Routing::DE::VRR.3pm.en	debian 12 / libtravel-routing-de-vrr-perl