Some states have laws against riding a bicycle on a street or highway while under the influence of drugs or alcohol (cycling under the influence, or CUI). Other states apply traditional DUI/DWI laws to cycling while under the influence of drugs or alcohol. And some states don't have a specific CUI law, and don't apply traditional DUI/DWI laws to riding a non-motorized vehicle, such as a bicycle.
In Arizona, the DUI laws apply to all vehicles, which can include bicycles. Under Arizona Revised Statutes Section 28-1381, a person can be charged with DUI if they are found to be under the influence of alcohol or drugs while operating any vehicle, if they are impaired to the slightest degree. Since bicycles are considered vehicles under Arizona law, cyclists can potentially be charged with DUI. However, the application of DUI laws to cyclists can vary, and enforcement may not be as rigorous as with motor vehicles. It's important for cyclists to be aware that they can be subject to DUI laws and to ride responsibly.