IPA: /nɒnˈreɪlˌrɔːd/
KK: /nɒnˈreɪlˌroʊd/
This term describes something that is not related to or associated with railroads.
The nonrailroad transportation options include buses and taxis.
Nonrailroad → It is formed from "non-" (meaning not) and "railroad" (from the combination of "rail" (from Old French *raille*, meaning a bar or beam) and "road" (from Old English *rād*, meaning a way or path). The word "nonrailroad" means not pertaining to or not involving a railroad.
Think of 'not' ('non-') related to a 'bar or beam' ('rail') and a 'way or path' ('road') — that's why nonrailroad means not related to railroads.