All my research to date on this sign has indicated that the D5-5a is a US sign and its posting a US phenomenon.
So it was much to my surprise to receive a photo from Canada!
Two of my intrepid readers ventured into Canada recently and found this sample in Moose Jaw, Saskatchewan.
I guess I'll just have to find more about this sign in Canada!
Photo credit: Thanks to DRG and JMG for this fine example of a D5-5a at work.
I can't wait to hear all about your journey and your discoveries.