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[quote user="Overmod"]I am still waiting for fuller discussion of the details of why it took so long for the F125s to enter service (even for California, that was a long time for expensive new assets to sit and older locomotives to go on polluting...)[/quote] We started to discuss the matter here: <a>http://cs.trains.com/trn/f/741/t/263485.aspx</a> The pictures I linked in that thread showed the changes made to handrails and grab irons.Here are the links and my text from the other thread:   To understand the handrail issues I compared photos on rrpicturearchives.net.   Here are four of them: Rear end #905: <a href="http://www.rrpicturearchives.net/showPicture.aspx?id=4603279">http://www.rrpicturearchives.net/showPicture.aspx?id=4603279</a> Rear end #913: <a href="http://www.rrpicturearchives.net/showPicture.aspx?id=4700525">http://www.rrpicturearchives.net/showPicture.aspx?id=4700525</a>   Front end #905: <a href="http://www.rrpicturearchives.net/showPicture.aspx?id=4479889">http://www.rrpicturearchives.net/showPicture.aspx?id=4479889</a> Front end #908: <a href="http://www.rrpicturearchives.net/showPicture.aspx?id=4687860">http://www.rrpicturearchives.net/showPicture.aspx?id=4687860</a> The changes are more than just the handrails. The PRIIA §05-005 specification asked for the handrail to be in recesses which is not possible after the change. That might be one reason. On the other hand Metroling and Progress Rail had difficulties complying with 49 CFR 231.17.e, "(e) Handrails and steps for headlights caused by the Crash Energy Management (CEM) elements in that area. That led to a request for a waiver of this paragraph from FRA in May 2017: <a href="https://www.regulations.gov/contentStreamer?documentId=FRA-2017-0041-0001&attachmentNumber=1&contentType=pdf">https://www.regulations.gov/contentStreamer?documentId=FRA-2017-0041-0001&attachmentNumber=1&contentType=pdf</a> The waiver was finally granted. The papers are here: <a href="https://www.regulations.gov/docket?D=FRA-2017-0041">https://www.regulations.gov/docket?D=FRA-2017-0041</a> The waiver request letter describes the dilemma. As attachment it contains 40 pages of information about the CEM system by Vossloh. I'm not sure how much of delay this explains and if there were other issues. Regards, Volker
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