On the stretch of 395 just south of the Highway 14 split there is a very very long stretch that’s flat and wide open. CHP will patrol this heavily on Fridays and Sundays. They will usually use 3 patrol cars. They mostly use constant KA radar but sometimes they put it in Instant On mode so watch out! I use my Valentine 1 radar detector and I’ve never had any problems. Slow down for long packs of cars/trucks heading toward you because CHP will hide behind the traffic as the last car where they will then hit you with radar as you pass them.