Your keyword is chasing a unicorn. The “best” free one doesn’t exist in a stable, feature-complete form. The “bfdcml” tag is a red flag.

The benefits of using the Doppelgelenkbus AGG 300 add-on include:

: Features true-to-life sounds recorded from real Hamburg buses and realistic decals/paintwork. Bonus Vehicle

Before taking the AGG 300 onto a narrow city map, try practicing on the or Hamburg maps, which are specifically designed for these extra-long vehicles. OMSI 2 Add-On Doppelgelenkbus AGG 300 - Steam