Portals - What are they?

[nwallace]

I noticed things called portals in both the markers list and on the provided routes with a waiting time. I couldnt' find any mention of them in the guides though.

[ianm42]

I believe they are at the ends of the 'stub' branch lines in a route, and can be used as start points or destinations by AI services.

[stewart]

Think of portals as gateways to the rest of the rail network not included in the route. Trains can be made to enter your route or exit your route via a portal. When entering the route it will appear at the portal you designate for it at the time you stipulate and when leaving via a portal on completion of its journey on the route it will disappear at the portal you designate for it.