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 Tennessee, the laws that apply to driving under the influence of alcohol or drugs (DUI) also apply to bicycling under the influence. Tennessee Code Annotated § 55-10-401 states that it is unlawful for any person to operate any vehicle, including a bicycle, on any public road, highway, street, alley, or any other public or private property, while under the influence of any intoxicant, marijuana, narcotic drug, or drug producing stimulating effects on the central nervous system. Therefore, a person cycling under the influence in Tennessee can be subject to the same penalties as those driving a motor vehicle under the influence, which may include fines, jail time, and mandatory participation in an alcohol and drug treatment program.