The specifics of DUI laws vary from state to state. However, in most jurisdictions, it is illegal to drive with a BAC of 0.08% or higher, or while under the influence of drugs, including marijuana.
Washington DC
In Washington, D.C. there are two different charges that can be applied to driving under the influence of alcohol or drugs.
1. Driving Under The Influence:. A DUI, as it is commonly referred to, is legally defined as driving with a blood alcohol content (BAC) of 0.08% or higher. It is outlined in DC Code §50-2206.11.
2. Driving/Operating While Intoxicated: A DWI or an OWI does not require a specific BAC. Rather, only some proof of intoxication is required. It is outlined in DC code §50-2206.14
A DUI//DWI will result in a fine from $300-$1,000 and/or no more then 90 days in jail. A second offense will result in a fine between, $1,000-$5,000 and up to one year in jail. A third offense will result in a fine of $2,000-$3,000 and/or up to one year in jail.
In D.C. “refusal to blow”, or refusing to submit to a DUI test will result in the loss of your license for one year. When you receive your license, you give implied consent for intoxication (D.C. Code §50-1905).
Maryland
Driving, or attempting to drive, while under the influence of drugs or alcohol is illegal in Maryland (MD Code §21-902). Driving with a BAC of 0.08% is considered a misdemeanor, and you can be charged with a DWI if you have a BAC of 0.7%.
A DUI in Maryland will earn you a $1,000 fine, while a DWI will result in a $500 fine.