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 Pennsylvania, the laws that apply to driving under the influence (DUI) of alcohol or drugs do not directly apply to riding a bicycle. Pennsylvania's DUI laws are specific to the operation of motor vehicles and do not include bicycles since they are not motorized. However, while there may not be a specific cycling under the influence (CUI) statute in Pennsylvania, cyclists can still be cited for public intoxication or disorderly conduct if they are found to be riding a bicycle while impaired to the degree that they may pose a danger to themselves or others. It is important for cyclists to be aware that even without a specific CUI law, their actions can still have legal consequences if they ride while impaired.