I say this on another site.
It is an installation on the ice to indicate to players that the boards are coming, kind of like a warning track in Baseball.
http://justcureparalysis.org/look-up-line/
I believe they are going on all rinks in Massachusetts, and I looks like the GTA is think about using them:
http://www.citynews.ca/2014/06/17/gt...-hockey-rinks/
Thoughts?
I think this could be a useful tool for both youth and senior hockey.
Mods, if this should be moved to another sub-forum, please do.