Traveling east from Tampa at 10 pm on a weekenight, the posted speed limit is 50 mph for most of the way until just before the road turns for the toll booths at 78th street. Just at that bend, the speed limit drops to 40 mph, then hundreds of feet later, it drops to 30 mph. The average motorist is already reducing speed to begin the entrance into the toll booths at that point anyway. Had the lights put on me as I was entering the toll booth, and pulled off to the side just past the toll booth. Was citing for speeding in a 30 mph area.