The reason I am wanting to know the code of track is because i want it to look as real as possible I want what is being used out there and not have to worry about it in the future.
If looks are your primary concern, and you are just starting out modelling a Class I railroad, either present-day or, say in the 1940's-1960's, then Code 83
is probably what you are looking for. Virtually all, current production or even fairly recent (last 20 years) production locomotives and rolling stock will work fine on Code 83...IF you are reasonably careful in laying the track.
I have been in the hobby off-and-on for the last fifty-five years. I am currently in the process of building my third major layout in a 14 x 14 purpose-built room we added recently. I've been
out of the hobby for about the last 20 years. As a result, I have a LOT of older equipment, and a WHOLE LOT of Code 100 track and turnouts, some including brass double-slip turnouts, and fiber-tie flex track, salvage from layouts I built as a teen. For that reason, and to insure
reliability of operation with all of my equipment, I am sticking with Code 100, except in a couple of places (a turntable transition, for example) where I'm "forced" to use Code 83. Can others tell the difference? Sure, I suppose. But I'm after the overall impression, and reliability. Secondly, although Code 100 is slightly over-height, it is fairly close to rail used on some of the major mid-Western lines in the 1950's, where high-speed passenger trains were a major factor in the size rail used.
Hope this helps a bit.
Green board, all!
Trailrider