Graham's results mirror mine, although I didn't need to force it the long way 'round with the quotes. I was initially intending only to fact-check my own cheeky suggestion, and was pleasantly surprised at what showed up.
But in seriousness, the realtor ought to have simply written, "This property abuts an active rail line." This is as specific a statement as I'd put in writing, and conveys the most important bits, namely that you can't park your travel trailer across the track, or use the RoW materials for craft projects to sell on Etsy. If the prospective buyer was interested in more details, then proceed from there.