CD 154 "Alarm Fence"
By Chris Seamons
|This is near steep a embankment where there is a tall 'electric fence' with what
appears to be CD 154 Hemi-42s that is about 20 - 30 ft tall and running for 10
poles or more.
An ICON member provided some insight to this strange arrangement:
"Those poles are part of a falling rock detector. Should an object come
off the hill above that is big enough to break the circuit, it is also possible
that it could derail an oncoming train. The broken circuit activates the block
signal system and throws a red block on any train approaching that area from
either direction. After contacting the dispatcher, the train proceeds at
restricted speed, checking for broken rail or obstruction in the rail.
"I am assuming the pictures you posted are on the old Rio Grande main
somewhere east of Provo. I ran that line for a couple of years on Amtrak."
Return to the Insulators in Service
If you have questions or comments, please use this Feedback
Last updated Sunday, May 6, 2001