Also found this on Shandong Carter. .. seems sometimes they are called SEC
http://sec.co.nz/sec-machinery/carter/
Still minimal on the USA group owners
Going through their youtube videos and this one
https://www.youtube.com/watch?v=QzDfmtNmkNk
at the 1:13 mark states they come with “several types of pedrails”
Now I’m well aware of the term in relation to heavy equipment...it just jumped out at me is all.