DED on NEC north of BAL?

[Ethan Klapper]

https://twitter.com/edatpost/status/409890786701238273

Didn't know there were DEDs on the NEC. Thought there was too much traffic.

 

[Train2104]

There is a DED in northern NJ. Listen to the radio transmissions in these two videos (not mine; taken one right after the other)

http://www.youtube.com/watch?v=4BP_0quF1ag

http://www.youtube.com/watch?v=-4qrhBOJbG8

 

[Trogdor]

Some detectors only broadcast if a defect is found, but are otherwise silent. I think there may be a few that don't talk at all, but instead send a note to the dispatcher to call the train.

 

[Acela150]

Their are a few Hot Box Detectors east of NHV. I believe one is between NHV and OSB.

 

[battalion51]

Defect detectors are necessary throughout the country because its nearly impossible to detect dragging equipment without the DD. And while most equipment on the NEC has on board hot box detectors (Amfleets), there are still a large number of cars with outboard bearings where a wayside DD is needed. The talking defect detector was an innovation by Seaboard IIRC, and its been widely adopted, but its not the only mechanism to report defects.

 

[Ryan]

There's one just north of Seabrook.

 

[jis]

There are DEDs at rather frequent intervals on the NEC. Most of them do not transmit over wireless, but report back to CETC.