Coming into Blanco, I slowed down for a 50mph and then a 40mph sign. Shortly after, a cop car came racing up behind me in the left lane, so I pulled to the right to let him pass. He changed lanes and continued racing toward me, so I pulled into a parking lot, afraid he was going to hit me. Instead, he pulled in behind me and gave me a ticket for going 51 in a 40mph zone. When I pointed out that I had slowed down for the 40mph sign, he said there was another sign before that one. I didn’t go back to check, but on the way out of town, I noticed that, southbound, there was a 55mph sign followed shortly by a 40mph sign, with a mobile 40mph sign IN BETWEEN the stationary signs. I didn’t have a digital camera with me, so I can’t upload, but I did take regular photos showing all 3 signs.