Three weeks after being "flashed" at night in a construction zone along I-17 in the Verde Valley, I received a ticket in the mail. I have several concerns. As I was entering the construction area, I had slowed down to the speed limit posted on each sign as we approached. As I was doing this, cars and trucks were passing me. When we got to the photo radar van, it flashed. Several issues seem to be at play. I was going 35 mph at the first posted sign, but was going down hill with cars passing. They must have slowed down before the van. It seems that the whole notion of "context" is not addressed by photo radar. Who was doing what and what point in time? Was I really going 46 mph as they state, even though I was going 35 mph shortly before? Isn't the "blinding flash" more of a danger?