I recently received a speeding ticket for doing 60 MPH in a 40MPH. I asked the officer what method of speed capture she was using and she stated she assumed I was going that fast. Well come to find out that the posted speed limit for the street I was traveling on was 45MPH. Is the ticket invalid at this point because one: assuming speed is not an accurate or approved method, and two: she wrote the ticket with the wrong posted speed limit?