When you’re stopped at a DWI road block or checkpoint, the officers are going to request your license and insurance card.
More importantly, they’re going to ask you if you’ve had anything to drink that night.
If you’re stopped for a DWI in a roadblock, the officer has to be perform the operation under certain circumstances and requirements.
Thereafter, there are field sobriety tests you may be requested to perform.
There’s a series of tests they provide, including a HGN test where they track your eye movement by following a pen or their finger. They can have you walk a line. They can request a finger-to-nose test. They can have you recite the alphabet. They can have you count.
The officers will also make just general observations of your physical condition.
If the officer has suspicion, he or she can give you what’s called an Alco-sensor.
This will give the officer the probable cause to bring you back to the station for scientific tests.