UP AC44CTE

[Anonymous]

My wife and I were driving home tonight and saw four (what I think were) brand new AC4400CTE's pulling an intermodal train. I got the wife to write down the numbers and I checked them when I got home. I KNOW they were AC4400's, EMD don't have radiators that even look remotely the same. However, the numbers seem to corispond to EMD SD60's. I think these are so new that no one seems to have shown them being delivered to UP on all the rosters and lists I could find. Is this the case? The numbers were 6035, 6036, 6046, and 6049. REALLY SHINY!!! Can someone confirm that these are AC4400CTE's? What does the CTE stand for anyway? Thanks

Damon

[CSSHEGEWISCH]

These are AC44CTE's. I have also seen them at Canal St in Chicago. The SD60's which were in the 6000 series have been renumbered or retired.

The CTE stands for Controlled Tractive Effort. I believe it refers to an advanced form of wheel-slip control.

[Anonymous]

Question about AC4400:

The new BNSF AC4400 are CTE´s ?

[Anonymous]

By the way: CTE means that the electronic can reduce the tractive effort. When such an engine is in the remote control helper position at the rear of a train CTE work.
If a rear helper will push with to much power it´s possible that cars will be derail.