LA Hwy 15 is a four lane highway with a median. The posted speed limit is 65mph as you approach the intersection of Hwy 15 and LA Hwy 857 there is a caution light. Approximately 2000 feet on either side of this intersection the speed limit drops to 50mph with no warning other than a single sign. The Chief of Police usually sit behind a building, in plain looking sedan with no lights visible on top, shooting radar. I received a ticket for traveling 61 in a 50mph zone which I believed to be a 55mph. I found out I was incorrect. The reason I feel that Baskin, LA is a speed trap is that the speed limit drops 15mph in a very short distance which is approximately 1/4 of a mile.