DWI Information


  • In Maryland, it is illegal to drive with a breath or blood alcohol concentration of .08 or more if you’re 21 or over, or .02 if you’re under 21, or .04 if you drive a commercial vehicle.
  • If your breath or blood test is at or above the legal limit, or if you refuse to take the breath or blood test, you will lose your license, in most cases for a year.
  • You can be convicted of DWI even if the breath or blood test is below the legal limit if it is proven that your ability to drive was impaired to the slightest degree by drugs or alcohol.
  • People who drive after drinking risk heavy fines, higher insurance rates, loss of license and jail sentences.


Even one drink of alcohol can affect your driving.

An alcohol drink is 1 1/2 oz. of 80-proof liquor (one shot glass) straight or with a mixer, 12 oz. of beer (a regular size can, bottle, or glass) or a 5 oz. glass of wine. Specialty drinks can have more alcohol in them and are the same as having several normal drinks.

Your body gets rid of one alcoholic drink per hour. There is no way to sober up quickly. Coffee, fresh air, exercise or cold showers will not help. Time is the only thing that will sober you up. The best plan is to designate someone who is not drinking to be the driver, or make other plans before you start to drink about how you will get home.

The Effects of Alcohol

Alcohol quickly affects judgment, vision, concentration, speech and balance. Everyone metabolizes alcohol differently. It is difficult to predict how many drinks will put you at or over the legal limit.

Alcohol slows your reflexes and reaction time, reduces your ability to see clearly and makes you less alert. As the amount of alcohol in your body increases, your judgment worsens and your skills decrease. You will have trouble judging distances, speeds and the movement of other vehicles. You will also have trouble controlling your vehicle.

Alcohol reduces all of the important skills you need to drive safely. Alcohol goes from your stomach into your blood and to all parts of your body. It reaches your brain in 20 to 40 minutes. Alcohol affects those areas of your brain that control judgment and skill. This is one reason why drinking alcohol is so dangerous. It affects your judgment and reduces your ability to know when to stop drinking.

Other Drugs and Driving

Besides alcohol, there are many other drugs that can affect a person’s ability to drive safely. These drugs can have effects like those of alcohol, or even worse. This is true of many prescription drugs and even many of the drugs you can buy without a prescription.

Drugs taken for headaches, colds, hay fever or other allergies or those to calm nerves can make a person drowsy and affect their driving. Pep pills, uppers and diet pills can make a driver feel more alert for a short time. Later however, they can cause a person to be nervous, dizzy, unable to concentrate, and they can affect your vision. Other prescription drugs can affect your reflexes, judgment, vision and alertness in ways similar to alcohol.

Driving under the influence of any drug that makes you drive unsafely is against the law.

  • If you are driving, check the label before you take a drug for warnings about its effect. If you are not sure it is safe to take the drug and drive, ask your doctor or pharmacist about any side effects.
  • Never drink alcohol while you are taking other drugs. These drugs could multiply the effects of alcohol or have additional effects of their own. These effects not only reduce your ability to be a safe driver but also could cause serious health problems, even death.
  • Illegal drugs are not good for your health and affect your ability to be a safe driver.

DWI and Administrative License Revocation

If you are arrested for DWI, your license will be confiscated on the spot if your breath test is at or above the legal limit, or if you have refused to take the test. The police officer takes away your license and notifies the Motor Vehicle Division, which then revokes it for up to one year. This action is called an Implied Consent or an administrative revocation and is completely separate from anything that happens when you go to court for DWI. If you are convicted in court, your license will also be revoked in a separate court action.

When your license is confiscated by the police officer you have 20 days before the revocation takes effect. If you want to protest the revocation, you must request an administrative hearing within 10 days of your arrest. The request must be in writing and be accompanied by a $25 hearing fee, or a sworn statement of indigence. The hearing will take place within 90 days.

The issues that will be discussed in your hearing are very limited. These issues are:

  • That the officer had reasonable grounds to stop you;
  • That you were arrested;
  • That the hearing was held within 90 days of your notice of revocation;
  • If you refused the test, that the police officer notified you that you could lose your license; and/or
  • That the chemical test was administered properly, and you tested at or above the legal limit.

The only exception to the one-year revocation of your license is:

  • If you have never had an administration revocation for DWI before, and
  • If you didn’t refuse to take the breath test.

If you are revoked for a DWI, you cannot qualify for any kind of license except an ignition interlock license.

Once your license is revoked, it stays revoked until you reinstate it.

The penalties for driving while revoked are severe. You can be sentenced to jail for up to a year (mandatory jail seven days) and can be fined up to $1,000 (mandatory fine is $300).

Your car can also be “booted” or immobilized for 30 days so you can’t drive it.


Your driver’s license can be revoked for both a violation of the Implied Consent Act and a DWI conviction through a criminal court. The revocation periods are as follows:

  • Implied Consent over 21 years of age (at or above 0.08%)
  • 1st Offense – 6 months for failing a chemical test
  • 1st Offense – One year for refusing a chemical test
  • 2nd or Subsequent Offense – One year for failing or refusing a chemical test
  • Implied Consent – Under 21 years of age (at or above 0.02%)
  • 1st and subsequent – One year for failing or refusing a chemical test

Criminal Conviction of DWI in Court

  • 1st Offense – One Year
  • 2nd Offense – Two Years
  • 3rd Offense – Three Years
  • 4th or Subsequent Offense – Lifetime

Arrest or Criminal Conviction for a DWI

Those with a commercial driver license arrested or convicted of a DWI, whether or not operating a commercial vehicle:

  • 1st Offense – One year disqualification
  • 2nd Offense – Lifetime disqualification

Implied Consent – Refusal to submit to a breath/ blood test; failure of breath/ blood test, or blood alcohol content (BAC) at or above .08 (or BAC at or above .02 for persons less than 21 years of age, or at or above .04 for person driving a commercial motor vehicle).