CP is such a stickler for liability (not a bad thing) that they're trying to set the example of "keep your hands and arms down and inside the car at all times." I don't know if the pictures in the brochures actually serve too much as role models, but then someone that does get their arm broken because they're messing around when the shouldn't be can't come back and say -- but look, it's in the picture, I thought it was okay! Sheesh.
-------------
PO!NT OF VIEW - A Different Look at Roller Coasters
http://www.crosswinds.net/~justmayntz/thrills/