Signal loop at Ladd Signal
Beel, you're absolutely right about there being a loop detector at Ladd -- I checked with the City's signal guys and they confirmed that there is...with most all high bike use loops in Portland marked, i'm suprised this one escaped.
They've got it on their list and will be marking it for bikes soon.
Thanx for enlightening me. Nothing liberates the mind like a smashed assumption.