Oklahoma, like all other states, has laws that prohibit driving while under the influence (DUI) of drugs or alcohol. Read about the penalties you'll face for a second DUI conviction, which is a felony in Oklahoma.
Sobriety checkpoints are legal in Oklahoma (see 884 P.2d 1218 (Okla. App. 1994)). These checkpoints (also referred to as "mobile checkpoints" or "roadblocks") are police traffic stops that are not tied to any specific or individual suspicions.