Signal Forms
Signals differ both in the manner in which they display aspects and in the manner in which they are mounted with respect to the track.
Read more about this topic: Railway Signal
Famous quotes containing the words signal and/or forms:
“By day thy warning ringing bell to sound its notes,
By night thy silent signal lamps to swing.”
—Walt Whitman (1819–1892)
“All forms of government symbolize an immortal government, common to all dynasties and independent of numbers, perfect where two men exist, perfect where there is only one man.”
—Ralph Waldo Emerson (1803–1882)