ONSR was initially a private build, mostly by Veronica Quackenbush. She acquired the right of way through several sims over several years. Kitto Flora scripted the cars and and switches in Smithers SimD for her.
Later Kitto Flora was temporarily commissioned by Linden Lab to build the extension of the ONSR to the Wengen Sim. The ONSR now runs across 13 sims and serves 10 stations. A round-trip takes about 22 minutes.
The ONSR runs in two directions on a single track. It is fully automated, including the rail cars. It has 3 passing zones with block control. Usually 2 rail cars are running at once.
The ONSR is not intended for the use of private trains. However some of the ONSR is on public Linden mainland and the track standard does work with personal trains that use sensors for guidance / locomotion. Personal trains could move aside when an automated train approaches.
Near the Wengen Station you can find Linden Chalet info hub and a ski lift to take you up the mountain. On the lake to the North West of the Wengen Station you can go ice skating. And in the surrounding mountains there is plenty of room to go downhill skiing.
http://wiki.secondlife.com/wiki/ONSR
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