This section of roadway has been improperly surveyed so RADAR and LIDAR cannot be used for speed enforcement. Both the Manual of Uniform Traffic Control Devices (MUTCD) and the Auto Club’s “Reasonable Speed Zoning” booklet state specifically that the speed limit shall be rounded to the NEAREST 5 MPH increment, unless there is a reason to justify lowering it by 5 MPH. The speed limit here has been rounded down from 50 to 45 because of “Horizontal and vertical curvilinear alignment.” That means the road curves. Yes, it does, but not radically so. The vertical “curvilinear alignment” means the road goes up or down hill. Again, yes, it does. THE STATE LEGISLATURE HAS SPECIFICALLY PROHIBITED USING ROADWAY FEATURES THAT ARE READILY APPARENT TO DRIVERS AS JUSTIFICATIONS FOR ARTIFICIALLY LOWERING POSTED SPEED LIMITS, BECAUSE DRIVERS CAN SEE THESE CONDITIONS AND ADJUST THEIR SPEEDS ACCORDINGLY. The California Vehicle Code specifically says, "It is the intent of the Legislature that physical conditions such as width, CURVATURE, GRADE and surface conditions, or any other condition readily apparent to a driver in the absence of other factors, would not require special downward speed zoning. Use of RADAR or LIDAR in this area would constitute a speed trap under California law.