
Studies show that riding a bicycle while drunk can slow reaction times, reduce coordination and seriously impair your ability to cycle safely.
Is it illegal to ride a bike while "under the influence?"
Under Section 30 of the Road Traffic Act 1988, it is against the law for a cyclist to ride a bike while "unfit to ride through drink or drugs." This is usually the case when a cyclist is sufficiently intoxicated that he does not have proper control of his bike.
Rule 68 of the Highway Code goes one step further. As well as making it an offence to "ride when under the influence of alcohol or drugs, including medicine," the Code also specifies that a cyclist must not ride carelessly, dangerously or inconsiderately. These are all things that an inebriated cyclist is likely to do, even at low concentrations of alcohol.
How much alcohol is too much alcohol?
Neither the Road Traffic Act nor the Highway Code specify exactly how much alcohol is permissible for a cyclist. Consequently, it can be difficult for an individual cyclist to determine how many units of alcohol he can consume before he loses his ability to ride a bike safely. Is one glass of wine too much?
If a police officer suspects that you have been drinking, he can ask you to provide a blood, breath or urine sample. However, the police cannot force you to provide a specimen. Plus, it is difficult to know how useful a sample would be, given that there are no legal limits for drunk cycling as there are for drunk driving.
If you refuse a sobriety test, the police are likely to rely on their assessment of your condition to decide what action to take. This might range from words of caution to prosecution, depending on the individual circumstances.
If your cycling behaviour was compromised, the police will determine whether you should be charged with a separate offence. For example, a cyclist weaving in and out of traffic could be charged with careless cycling as well as cycling under the influence.
If the drunk cycling charge could not be proven, you could still be found guilty of careless cycling and be fined.
What are the penalties for drunk cycling?
Cyclists prosecuted for riding while under the influence face fines of up to £2,500.
The cyclist may also face fines and/or imprisonment for the other road traffic offences he commits while intoxicated. For example, failing to stop at a red light is usually penalised with an on-the-spot fine of £30.
Causing physical injuries to another person while cycling could be prosecuted as "wanton and furious cycling" under the Offences Against the Person Act 1861. This carries a maximum jail sentence of two years.