More than 600 people have been taken to hospital in police cars in Wales over the last three years, because ambulances were not available.
Figures shared by Plaid Cymru reveal that in south Wales, the number of people taken to A&E by police officers has doubled since last year.
Among the injuries and illnesses suffered by people taken by police car includes attempted suicide, falls in the street, self-harm and hypothermia.
In a statement, the Welsh Ambulance service said:
"The Trust is working in partnership with police forces across Wales to reduce instances where our emergency colleagues are awaiting an ambulance response. Both the Trust and all four police forces maintain frequent contact and are building on the close relationship in support of each other and their staff."
More top news
Andrew Patrick Saunders killed his ex-girlfriend Zoe Morgan and her new boyfriend Lee Simmons outside Matalan in Cardiff last year.
The annual survey from the Asphalt Industry Alliance also says local roads in Wales and England are on the edge of terminal decline.
The Environment Secretary has announced a £223 million boost to rural communities