Semi-trailer driver charged over 'carnage'

The driver of a semi-trailer has been charged over a seven-vehicle crash on the Newell Highway that killed a young couple.

A man and a woman, aged 21 and 19 respectively, died at the scene north of Dubbo on January 16 when the semi-trailer allegedly ploughed into cars stopped at roadworks.

At least 10 others were injured, including a two-year-old girl, in the accident involving two trucks, four sedans and a ute.

NSW Ambulance superintendent Kathy Golledge at the time described the crash as "absolute carnage".

The driver of the semi-trailer, a 50-year-old man, suffered leg fractures and suspected internal injuries and was taken to hospital.

He was discharged on Friday evening and arrested by police. He faces 10 charges including two counts of dangerous driving occasioning death.

The man was refused bail to appear at Parramatta Bail Court on Saturday.