Swan Rd between River Rd and Sunrise, both lanes
The checkpoint is hidden in such a way that you cannot see it coming either northbound or southbound. I was told by an officer to exit my vehicle as he smelled alcohol. It was clearly a ruse and the officer was only "assuming" he had me. I was given a quick "pen to eye" test and ordered to submit to a breathilizer.
I passed both tests and was allowed to leave. Based on my observation, officers were free to assume one had been drinking by the time of the night and occupants in the vehicle. I was alone, however I observed a family van being waived through (with kids inside) without so much as a stop and check.