After getting the green light going eastbound, it is a gradual incline and three lanes. I was in the right lane and the first vehicle,with moderate to heavish traffic. I was attempting to gain enough speed to merge over in front of the middle lane of vehicles and ironically just at the point where the right lane merges and ends was this Prescott PD motorcycle patrolman perched on the shoulder:catches me supposedly going 64 in the 45mph zone.Asks me if I was noticing my speedometer. I said ‘No , I was watching the roadway !