The police were alerted that a person was located in and by the road at 21.30 on Tuesday evening.
We send a patrol there, but before we get there, he is hit, says Morten Gunneng, duty officer at the police, to TT.
The man is seriously injured and was unconscious when he was taken to hospital.
The accident occurred on highway 47 near Ullene outside Falköping. The incident is being investigated as causing bodily harm and negligence in traffic, but no person is suspected of a crime.
There are plenty of witnesses to the incident, says Morten Gunneng.
The road is expected to be closed until 01 on Wednesday night, according to the Swedish Transport Administration's forecast.