Guide to basic priority merges in OpenTTD
OpenTTDCoop Wiki's page on Priorities, quite comprehensive: https://wiki.openttdcoop.org/Priority
Priority merge on the OpenTTD wiki, goes into some details about failsafe merging which is neat but not too useful: https://wiki.openttd.org/Priority_Merge
Music by boxboys: https://boxboys.bandcamp.com/album/together
