Hi, Balshis is correct about the aluminum causing problems. Aluminum wether wire or track soon develops a thin film of oxidation on it's surface. The oxidation reduces elect flow from the surface of the metal. Very bad! In the 70s there was a copper shortage. Many homes built then were wired with aluminum wire. The resulting oxidation & consequent reistance cause heat build up resulting in many home fires. Very serious. The cure is to clean the aluminum & apply a very good layer of "no oxide grease" for aluminum wiring. I have some very personal experiance with alum. home wiring & have witnessed the results & danger.
Now getting back to track, I have a bit of this Tru-Track. It requires constant cleaning. I wonder if the copper shortage, which I think was world wide had anything to do with the aluminum rails?? They could have simply used steel, so maybe it was to ruduce rusting?? Really makes no sense.
If you like the looks of this track you may be interested in SuperO. A web search will show it in use. Made by Lionel '57-66 in fairly large amount. Very easy to come by today & less costly than FasTrack or many other track systems. It was only made in 036. Curves can be rebent to any radius. Switches are of course only 036, that is the limiting factor. The thin center rail was hard on some early rollers. By 1958 almost all rollers were of such material rollers didn't wear at all. None of the repro rollers I've found wear. So roller wear is no reason to not use it.
I've had a SuperO layout going for 25yrs. to good results. There is no track more smooth or quiet. None!
So switches are the limiting factor. Some folks use Gargraves or Atlas switches.
Very best, Don Johnson