Today's Federal Register includes a petition to waive certain design issues so that the train sets can be put to use:

Excerpt:
Amtrak plans to lease two articulated Series 8 trainsets from Tren Articulado Ligero Goicoechea Oriol (Talgo) to support its Cascade intercity service. The Cascade service operates between Eugene, OR and Vancouver, BC. The service uses both Talgo Series 6 and Series 8 trainsets. Amtrak currently has two Series 8 trainsets now in service that were purchased by the state of Oregon in 2013. The two train sets to be leased from Talgo were originally built for the state of Wisconsin in 2013 but never purchased. The trainsets have never been operated but have been stored in serviceable condition at the Amtrak Beech Grove facility in Beech Grove, IN.

Amtrak requests relief for the two Talgo Series 8 trainsets from the requirements of 49 CFR 238.131(b), Safety System for Manual and Powered Side Doors—propulsion interlock, which applies to passenger cars beginning service after February 5, 2018, and § 238.133, Exterior side door safety systems—all passenger cars and locomotives used in a passenger service.


Federal Register