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 Alabama, the laws that apply to driving under the influence (DUI) of alcohol or drugs traditionally pertain to motor vehicles and do not explicitly include bicycles. Alabama Code Section 32-5A-191 defines DUI by focusing on 'motor vehicles,' which does not encompass bicycles. Therefore, Alabama does not have a specific cycling under the influence (CUI) law, and the state's traditional DUI laws do not apply to riding a non-motorized vehicle such as a bicycle. However, cyclists may still be subject to other laws and local ordinances that promote safety on the roads, and it is always advisable to ride responsibly.