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In this link:  <o:p></o:p> <a href="http://www.youtube.com/watch?v=HplaB7EB0L4&feature=relmfu">http://www.youtube.com/watch?v=HplaB7EB0L4&feature=relmfu</a> The NTSB representative clearly implies that the crossing signals were visible at least one mile before reaching the crossing, and should have been seen by the truck driver involved in the 6/24 crash.   Forum member Falcoln48 reported being able to see activated grade crossing signals at another crossing from one mile.  <o:p></o:p> Yesterday, I tried to confirm the one-mile visibility near where I live, but was unable to find any type of signal light that had an unobstructed view for over ½ mile.  But my checking did make me realized just what a mile along a road looks like in terms of the visibility of objects looming into view and fading into the distance.   <o:p></o:p> Certainly it is possible to project a light to be visible from one mile.  Locomotive headlights can be easily seen from one mile.  And I do not know the light intensity of projection capability of the Nevada crossing, nor that of the crossing that Falcon48 was looking at.  But generally, grade crossing signals seem to be roughly equivalent in projection to traffic lights.  I find it impossible to believe that lights of that intensity would be visible from one mile in the bright sun of midday.  At a distance of just ¼-mile, traffic signal lights I was looking at were barely visible.  <o:p></o:p> Here is a link showing a highway view of the Nevada crossing at different distances.  In the view showing the advance warning signs, those signs are 897 feet from the crossing, according to what the NTSB has stated:  <o:p></o:p> <a href="http://misterhippity.tumblr.com/post/6946429634/ive-been-using-google-street-view-to-conduct-my">http://misterhippity.tumblr.com/post/6946429634/ive-been-using-google-street-view-to-conduct-my</a>  <o:p></o:p> Photo quality is not the greatest, and there may be a little haze in the air, but it does give an idea of what the view looks like at about 900 feet in full sun, at midday.  Granted, the lights are not activated, but you can see how small the crossing signals appear to be. A mile is almost 6 times further.
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