Ways to reduce noise in a home near railroad tracks?
I lived about the same distance (maybe a bit more) from train tracks for several years.  Most of the trains were commuter trains, with two freight trains daily mixed in.  The biggest thing to remember is that you're going to tune them out to a large degree as commented above.  The advantage with the mostly commuter train composition of traffic was that they stopped at about 1:00am until 5:30am.

Double paned windows and window coverings were the only physical changes that made a difference.  The windows also helped with heating/cooling and energy savings.