I just copied this off the download station. Says it all really
Description:
A Portal that extends the functionality of the standard Auran portal as follows:
Adds the ability to re-rail trains/vehicles
- Monitors the whole map for de-railed trains.
- Choose to re-rail or delete the derailed train.
- Choose to filter the de-railed trains that can be handled by this portal.
- The trains will be re-railed with their current driver, schedule and vehicle loads (where applicable).
Production changes
- A production start delay can now be set, as well as the production period time.
- A consist for production can be selected either randomly or sequentially from the consist list.
- Consists that do not contain a locomotive are now emitted from the portal correctly.
Consumption changes
- Vehicles entering the portal at a high speed (200 mph/320 kph) are now consumed correctly.
These portals are designed to be compatible with the standard portal, allowing easy replacement of a standard portal on a route where re-railing functionality is desired.
I have used them in some of my routes and found that they work well
Andy