You mean in that case they arrest you. Chances are if you've been drinking that a breath test will incriminate you. If you choose to skip a breath test you leav

You mean in that case they arrest you. Chances are if you've been drinking that a breath test will incriminate you. If you choose to skip a breath test you leave the cops with a choice to arrest you or let you go, if they pulled you over then they probably would feel the need to arrest you. Which means that you'll be getting a blood test at the station. A blood test at the station may or may not be the best choice depending on how much you had to drink and when. If you just had some shots and immediately get pulled over you may be more intoxicated for the blood test. If you stopped drinking a while ago then delaying to the blood test could help you look less intoxicated. The idea is that you want to choose based on what is best in your current situation. Its best not to drive under the influence and avoid the situation entirely.