Guardia Civil traffic officers are investigating a 67-year-old man who caused an accident on the A-45 in Malaga after driving about 500 metres in the opposite direction.
On 1 December, he collided head-on with vehicle being driven by a woman who suffered minor injuries at kilometre 101 of the busy motorway.
Police said several drivers managed to dodge the oncoming vehicle before the accident happened.
Traffic officers who went to the scene said the driver who caused the accident showed symptoms of drunkenness and a breathalyser test yielded a positive result of 1.00 and 1.04 milligrammes of alcohol per litre in exhaled air, which is four times the allowed limit.
The man has now been charged with driving under the influence of alcohol and reckless driving.