DUI checkpoints—sometimes referred to as sobriety checkpoints—are roadblocks set up by officers to stop vehicles to check for drunk drivers. DUI checkpoints are designed to achieve surprise, and are often set up in areas not visible to approaching traffic. Typically, vehicles are stopped in a specific sequence, such as every other vehicle, or every fourth and fifth vehicle. If an officer’s initial encounter with a driver gives him or her reasonable suspicion that the driver is drunk, the officer may [...]