Rails adjectives are listed in this post. Each word below can often be found in front of the noun rails in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing RAILS.
altar, american, bottom, broken, chancel, communion
few, first, heavier, heavy, horizontal, iron
light, long, lower, many, metal, more
new, old, outer, own, parallel, same
smooth, split, splitting, steel, stiff, top
Hope this word list had the adjective used with rails you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.