Police found the ambulance overturned on the curb of US Highway 52 southbound near the Liberty Street exit around 1:16 a.m. Sunday.
The driver of the car, Jose Martin Duran Romero, was charged with DWI.
Police say Romero was driving a Honda Accord on US-52 when he collided with the ambulance's left side, causing both drivers to lose control. Romero ran off the road and the ambulance rolled over on its side.
Romero was also charged with Failure to Reduce Speed and No Operator's License. The passenger, Andres Figueroa Leon, was charged with Failing to Render Aid and Give Information.
Anyone with information should call the Winston-Salem Police Department at (336) 773-7700 or CrimeStoppers at (336) 727-2800.
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