As the one tree between oncoming traffic and the beautiful view over the Arroyo Canyon, this sign definitely would have been seen by the most people. How many of them went by slowly enough to discern the oddity of being warned of a dog while in freeway traffic going over a bridge... that is another question. As a final caveat, this is the only sign that is no longer still up as of the Rose Parade. Only about 100 yards from the end of the parade route, I imagine someone authoritative took it down.