Hwy Patrol parks in a location less than 1/8th mile from point that speed limit abruptly changes from 55 mph to 30 mph without prior warning as one enters the outskirts of Salem, enabling them to clock unsuspecting motorists the moment they hit the speed trap. There are two 30 mph speed limit signs; however, one is partially covered by a town sign ("Salem")and the next is positioned so as to be difficult to see in afternoon lighting conditions. Obvioulsy, police have found this spot to be very lucrative, as it is extremely easy to miss the signs and very little time to reduce speed by 25 mph before radar is operative.