This is a sobriety check roadblock that I see set up every couple of months on my way home from work. I get off at midnight and it seems they are never quite finished setting it up then. But a friend of mine who gets off later has been stopped. Along with the standard equipment they usually set up a trailer where they can test your blood in case they feel like arresting you for a DUI. They set this roadblock up as you arwe going down the hill right before you reach rive road. The only place to turn off before the roadblock is into a business park so by the time you see it it is already to late.