Implied consent laws require all drivers to submit to chemical testing when police accuse them of driving while intoxicated. Of course, they still have the right to refuse such tests. However, as a result of implied consent laws, the driver will likely be immediately arrested on suspicion of DUI.

Implied consent laws function by assuming that when a driver gets a driver's license and enjoys the privilege of driving, they automatically consent to being tested for drugs or alcohol when police suspect them of driving while intoxicated. Such chemical tests could include urine, blood and breath tests.

When a driver refuses to take a chemical test, they will usually endure a mandatory driver's license suspension that could last up to a year. Interestingly, it's common for the license revocation to be longer after a driver refuses a test than if they take the test and fails. In some cases, a driver could even face harsher punishments if convicted of DUI after refusing to take a test.

Police arrest countless individuals on drunk driving charges every evening. However, police and the protocol they use to identify and charge people with intoxicated vehicle operation are not fool-proof. It's very possible for law enforcement officials to make a mistake and arrest someone intoxicated driving, when the accused was completely and undoubtedly sober. For this reason, every person accused of drunk driving will have the right to defend him or herself against the charges – no matter the facts and circumstances surrounding the arrest.

There will be numerous legal strategies available to defendants as they navigate their criminal charges. Such strategies may include:

1. Challenge evidence presented by the prosecution

If a police officer pulls you over or suspects you've been driving while intoxicated by alcohol, the officer will request that you take a Breathalyzer test as a part of a larger drunk driving investigation that also includes a field sobriety test. The officer will ask you to do the Breathalyzer test by telling you to blow into a tube. A machine will then analyze the alcohol content of your breath to estimate your state of intoxication.

Breathalyzer tests are known to be plagued by inaccuracies, however, and many drivers don't trust them. This prompts a lot of people to refuse a Breathalyzer test out of the fear that false or inaccurate evidence from the test could later be used against them in court. Fortunately, there are several situations in which a driver can legally refuse to submit to a Breathalyzer test.

If the officer has yet to establish any kind of drunk driving evidence against you, and the officer is merely asking you to perform a Breathalyzer test as a way of fishing for evidence, you may have the legal right to refuse the test in some cases. However, in other cases, refusing a breath test can result in serious criminal consequences and even the suspension of your drivers' license.

Some people suffer from the rare condition that turns them into a walking beer factory. These individuals -- when they eat anything that has sugar in it -- suffer from an automatic process by which their bodies convert the food into beer, and this makes them unintentionally drunk. Although it's hard to imagine that it could be true, auto-brewery syndrome is real. Not only that, but in a New Jersey drunk driving case last year, a woman successfully defended against her drunk driving charges because of the condition.

The accused woman claimed that she enjoyed drinking as much as a gallon of orange juice a day, and that she was also a recovering alcoholic. On the night of her arrest, the woman says that she had been sober for nearly a decade, but she also felt drunk. In fact, the woman explained to the jury that she had been feeling strange for approximately a year before her DUI arrest. During the arrest, she blew a level .10 when given a Breathalyzer test.

After the woman later obtained a diagnosis of auto-brewery syndrome, she was able to get her DUI charges reduced. Auto-brewery syndrome results in a patient's digestive tract getting overloaded with yeast that ferments carbohydrate-rich foods. The case could be one of the first examples of the successful use of the "auto-brewery defense. Most sufferers of this condition don't realize they have it until after a negative consequence results.

You have a few drinks at the bar and decide to drive home. On the way there, you notice that your car is running out of gas. You pull into a gas station, fill up and then head into the station to pay.

When you come out, a police officer has stopped at the pump next to yours. You feel nervous, so you go back into the building. Then you realize that looks suspicious, so you go back out and head to your car. The officer says hello to you, and you try to casually say hello back, but you stumble over your words.

You get in the car and turn it on. The officer is still watching you, and suddenly the alcohol hits you a little harder. You put your head down on the steering wheel. The motor is running, but the car is still in park. As you look up, the officer walks over and asks you to get out of the vehicle. You wind up getting arrested for a DUI.