About 10:20am on Wednesday, emergency services were called to the Barton Highway, Wallaroo, about 40km south of Yass, after four cars and a truck collided.

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Police have been told a B-double truck was travelling south-east on the Barton Highway when it struck the rear of a stationary Toyota Kluger waiting at roadworks.

The impact pushed the vehicle into three more vehicles.

The driver of the SUV - a 33-year-old woman- was trapped for some time before being freed by Fire and Rescue NSW. She was treated by NSW Ambulance Paramedics for spinal and leg injuries, before being taken to Canberra Hospital in a serious but stable condition.

Three other drivers and a passenger involved were all taken to Cavalry Hospital in stable conditions for further treatment.

Officers attached to The Hume Police District established a crime scene and with the assistance of specialist officers from the Crash Investigation Unit commenced an investigation into the circumstances surrounding the crash.

The truck driver, a 59-year-old man, was uninjured. He was arrested and taken to hospital for mandatory testing, before being taken to Yass Police Station.

Following inquiries, he was charged with dangerous driving occasioning grievous bodily harm - drive manner dangerous, and negligent driving occasioning grievous bodily harm.

The Victorian man was granted conditional bail to appear before Yass Local Court on June 17 2022.

Anyone with information about or has dashcam vision of this incident is urged to contact Yass Police on 6226 9399 or Crime Stoppers on 1800 333 000.

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