On the way out, my 8 year old started laughing.
"What's so funny?"
"You made the sign move."
"What sign, the one that was above the van?"
"Yes."

Apparently, the height restriction sign on the way in is higher than the one they have for people on the way out.
Not sure what the purpose is of having a 2x4 painted yellow hanging from a chain for vehicles LEAVING the parkade, or why they decided that the height restriction for the open sky outside should be lower than for vehicles entering... anyway; life makes no sense.

Maybe they think the grey skies above Halifax feel lower than cement ceilings?