...a hot dog stand
in a converted RAILROAD dining car.
The Big Bang Theory Season 4, Episode 6
down by the RAILROAD tracks."
Breaking Bad Season 2, Episode 12
Well, Sheldon was going on and on
about time zones and RAILROAD schedules,
The Big Bang Theory Season 9, Episode 16
...an outdoor museum
featuring 43 RAILROAD engines, cars...
The Big Bang Theory Season 4, Episode 6
I'm gonna be working on the RAILROAD
all the livelong day.
The Big Bang Theory Season 10, Episode 15