In a strong earthquake in Osaka Japan seats on Hankyu Railway trains were removed and reassembled into exit ramps to get people out of the cars between stations.

https://www.metafilter.com/174757/How-to-evacuate-a-train-using-the-seats-SL-Birdsite  hat tip to
https://nagonthelake.blogspot.com/2018/06/emergency-evacuation-of-train-using.html