Cyclists have been warned against attempting to ride after alcoholic drinks.
And those who do so are being reminded that they risk their own safety and that of others - and that they could face fines of up to £1,000.
The warning comes from the Institute of Advanced Motorists (IAM), which is using the barbeque season to stress that "Pedals and Pimm's don't mix".
While pointing out that getting behind the wheel of a car when above the legal limit is considered "socially unacceptable", the charity claims that many people would be prepared to cycle home after drinking the same amount.
By law, anyone riding a bike who does not have proper control of it due to the influence of drink or drugs can be fined up to £1,000. According to the London Cycling Campaign, police are not allowed to insist on breathalysing suspects - or taking blood or urine samples - but must instead rely on "old-fashioned tests", such as checking whether cyclists can walk in a straight line.
It also points out that cyclists cannot have penalty points added to their driving licences for offences committed while on a bicycle.
IAM director of policy and research Neil Greig said that cyclists who had stopped off for summer drinks could also find themselves cycling home in the dark.
"While you may be of less risk to other road users than when in a car, you could easily fall into a dangerous situation or cause someone else to swerve and crash to avoid you."
And Greig warned: "If your cycling does result in a collision you are likely to come off worse."
Last month, Transport Secretary Philip Hammond said that he would "carefully consider" the findings of Sir Peter North's report into the law regarding drink- and drug-driving. Among the legal scholar's recommendations is that the blood-alcohol limit be reduced from the current 80 milligrams (mg) of alcohol per 100 millilitres of blood to 50mg, which would bring the UK into line with much of Europe.
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