Re: extra Rails?

["Ted Gay" <tedgay@bigpond.com>]

"jjjim" <jjjim@bigpond.com> wrote in message
3A769296.CD2A485C@bigpond.com">news:3A769296.CD2A485C@bigpond.com...
> ON what apears to ONLY be on sections of Track that are going over some
> sort of bridge (say a creek  or over a road)  Are a second pair of Rails
> Right in the center of the track,  right next to eachother,  , say about
> 20cm apart  ,  I was wondering what there purpose was?.   I had an idea
> that maybe it was a saftey thing in the case a train was to derail on
> the bridge, helping to  prevent it from running right off the track..
> thus off the bridge and crashing into the creek / Road below!  which
> would no doubt cause  massive carnage  ,  would this be the reason, or
> am i way off ;)
>

Yes, check rails, not always so close together, can be close to running
rails.  Also used where rail/tram line passes under a building, shopping
centre, on the tram line under Star City Casino (Sydney Metro Light Rail).

Ted