SMM - Mondego´s Mobility System - Metrobus of Mondego- Railway line converstion to metrobus specific line from Alto de S. João to Serpins - Coimbra - Portugal (32 km).
See more below:
https://www.infraestruturasdeportugal.pt/pt-pt/centro-de-imprensa/sistema-de-mobilidade-do-mondego-2
https://www.infraestruturasdeportugal.pt/sites/default/files/files/files/20200911_apresentacaosmm.pdf
https://www.youtube.com/watch?v=YgDwklr4ttU&t=6s