Been out for a while now but worth a post for people who haven't got it! 
Build 100 of Rail3d, the free track creation program with driving features etc. is now available with a few interesting features most noticeably controlling trains in a signalbox.
See UKTS Review:
http://www.uktrainsim.com/index2.php?form_reader=rail3d100

Build 100 of Rail3d, the free track creation program with driving features etc. is now available with a few interesting features most noticeably controlling trains in a signalbox.

See UKTS Review:
http://www.uktrainsim.com/index2.php?form_reader=rail3d100