Northbound Golden State Blvd. actually starts as an exit off of Northbound Hwy. 99 and southbound becomes a ramp to enter that highway heading south. This is the County line between Stanislaus and Merced counties so is patrolled by the CHP. They park on either side of Golden State in the bushes and run radar. The speed limit northbound is only marked just as you leave the highway and is set at 55mph. There is no speed limit set for southbound. There is only an "advisory" yellow 50 mph sign as you start on the ramp to SB Hwy 99. They will usually say that you clocked going 75mph. Period. For a while, there had never been a speed study done here. But Merced County recently did several on both sides of this divided road so you can’t use that for a defense anymore. But they haven’t added or updated their signage so that’s a problem for them. The Prima Facia speed limit for a divided road such as Golden State is 65mph unless a speed study justifies something different.