Train sign - whistle post

[ital]

Anybody knows what the train sign under Author to the left means?

[CSXT 700]

If you are reffering to the photo under your name, its a whistle post. Two long, one short, and one long. Used for grade crossings.

[ital]

Thanks CSXT 700.

It might also be used for a trestle bridge, since there is no grade crossing close by. The sign is in the back of my community and there is a trestle bridge close by. It gets disturbing when the train blows at 3am waking me up. But, I guess that's virginia law to blow at trestles.

D

[CSXT 700]

I beleave most railroads, have rules about blowing for bridges. No shure what most are. I would have to look at my rulebook to refresh my memory about that.

[TB Diamond]

Several years ago, on the BN, it was one long when approaching bridges or tunnels.

[jgallaway81]

Under Conrail, you had to blow the crossing signal for tunnels. NS only requires the bell through the tunnel, but doesn't prohibit th euse of the whistle on the approach

[10more years]

Don't believe Southern blows for trestles, but they do for drawbridges,or they used too. That sign appears to be whistle post for a road crossing at grade. It should be about 1/4 mile from crossing. Sometimes, on CSX, they take out the crossing and leave the whistle post up (don't have a clue as to why except too damn lazy or trying to annoy engineers who have to blow whether there's a crossing or not). But there might be a an old private crossing or farm path up the road.

[Malley]

Long long short long was once reserved for at grade crossings...as whistle signals have become less a way of communicating and are now just a warning, I've heard engines toot for tunnels as well as GCs with _ _ . _
What I'm saying is that engineers don't feel a need to be consistent with this sort of signal, but I'm willing to be wrong on this.
Malley