Transport for Wales to expand penalty fare zone from September 9, impacting most trains in south Wales. Passengers without tickets may face fines of £20 or more. Some stations lack ticket facilities but passengers must buy tickets before boarding. New policy aims to crack down on fare dodgers and improve service. Passengers divided on fines, with some criticising service quality. Commenters suggest buying tickets via app for convenience. Railway expansion aims to deter anti-social behaviour. Share your views in the comments section.