Decreasing speed limits from 70mph to 50mph eastbound at West city limit. Then speed drops to 40 in less than o.2mile on a downhill grade. Also the trap has an unsigned blind s-curve that has a chord distance of less than 0.1mile.
They also like to hide behind the Sonic Drive Sign and across the street at an abandoned car wash. Easily 100′ from the roadway. Basic Rt angle to road or 45degree angle to traffic. Excellent cosine error defense could apply here.