Check it out on Steam: https://store.steampowered.com/app/1925090/SubwaySim_Hamburg/

Explore the picturesque U3 line of Hamburg's elevated railroad in the new SubwaySim Hamburg! A brand-new, detailed public transport simulation awaits you in one of the most beautiful cities in the German language sphere. Accurately recreated stations, lively route sections and varied tasks are of course a must.
Experience the DT5 electric multiple unit in full detail in SubwaySim Hamburg thanks to a cooperation with the Hamburger Hochbahn AG. Drive the 39.6 meters long vehicle with a maximum speed of 80 km/h through Hamburg and take your passengers safely to their destination. The Unreal Engine 5 lets the silver-red DT5 shine in never-before-seen graphical fidelity and shows the U3 line on an extremely high level of realism.
Get a realistic insight into the daily life of a subway operator in Hamburg with an authentic driving experience, dynamic AI as well as accurate soundscape. Lots of varied tasks and open world routes ensure countless hours of fun.