Two Head Signal-track selected?
- Thread starter boleyd
- Start date
Depends on the railroad, but for US roads in general top head indicates the through or main route, bottom is siding or branch line. So green over red or yellow over red indicates the switch is set to continue on the line you're already running on, red over green or red over yellow means the switch is set to diverge from the current line to somewhere else. Usually the through route is straight and the diverge is curved, but in the case of switches coming off a curve or wye switches it can be the other way around. Either way if it allows a link, top head is linked to whichever track will keep you going the way you were already going, bottom head links to the track that takes you elsewhere.
Some complication;
http://forums.trainsim.com/vbts/showthread.php?t=239517
There I used double heads on the trailing points which were linked to the next facing point switch beyond the single track section, or in some cases linked across multiple switches, but the principle is the same - top head linked to the route you want to be designated as the main route, bottom head to the one designated as secondary.
Some complication;
http://forums.trainsim.com/vbts/showthread.php?t=239517
There I used double heads on the trailing points which were linked to the next facing point switch beyond the single track section, or in some cases linked across multiple switches, but the principle is the same - top head linked to the route you want to be designated as the main route, bottom head to the one designated as secondary.
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Yup. Allegedly Jointed Rail is coming out with some linkable signals, but the defaults don't have links. Instead what they have is left and right versions that automatically link when you place them. That can be confusing because Brit signals are on the left side of the track they control, US signals are on the right side, so many of the lighted signals have left side PLACEMENT and right side variations of same. Within the US signals tho, standard naming convention;
1 - dunno
2 - right diverge, left track top head, right track bottom head.
2L - left diverge, top head right track, bottom head left track.
3 and 3L I think are permissive versions of 2 and 2L
4 is an absolute interval signal, also used on the trailing points.
5 is a permissive variation of 4.
They don't always work correctly, main problem I found with the 2 and 2L is they display the wrong aspects if there's a trailing point between them and the next signal, double crossovers for example show red over green for either straight or diverge unless you place extra signals inside the crossovers.
Tutorial;
http://trains.0catch.com/tutorial.html
Part 4, 5, 12, and 14 are my bible chapters.
1 - dunno
2 - right diverge, left track top head, right track bottom head.
2L - left diverge, top head right track, bottom head left track.
3 and 3L I think are permissive versions of 2 and 2L
4 is an absolute interval signal, also used on the trailing points.
5 is a permissive variation of 4.
They don't always work correctly, main problem I found with the 2 and 2L is they display the wrong aspects if there's a trailing point between them and the next signal, double crossovers for example show red over green for either straight or diverge unless you place extra signals inside the crossovers.
Tutorial;
http://trains.0catch.com/tutorial.html
Part 4, 5, 12, and 14 are my bible chapters.