Police were called by the ambulance service to an accident in Hanham just before 11am on Sunday (22nd June).
The crash on Common Road involved a motorcycle and a car. The motorcyclist was unhurt but the driver of the car had treatment for cuts, bruises and shock.
Police arrested the driver of the motorcycle, a 19-year-old man, on suspicion of driving with excess alcohol after he failed a roadside breath test. He was later released on police bail.
An Avon & Somerset police spokesman said: “Our summer anti-drink drive awareness campaign is focusing on how long it takes for alcohol to leave your system.
“It can take more than two hours for a pint of beer to leave your system, so you may not be safe to drive the next day.
“If you drink four pints of lager you should not drive for at least 13 hours from finishing your last pint. If you finish at midnight, you may not be safe to drive until after 1pm the next day.”
Police say even a very small amount of alcohol can affect your ability to drive safely and the best advice is not to drink at all if you are driving, and to avoid heavy drinking if you are driving the following day.