Driver charged over Sydney multi-car crash

A truck driver has been charged over a multi-vehicle crash in Sydney that left six people injured.

A 40-year-old Smithfield man will appear in court in January over the crash at Dee Why on October 21.

Police allege the truck lost control coming down a steep hill from Warringah Road toward Pittwater Road about 6am, crossing three northbound lanes and mounting a concrete median strip.

The truck then collided with eight vehicles stopped at a red light, crushing one vehicle.

Six people were injured, including two off-duty police officers who were trapped in the crushed car.

All victims have since been released from hospital.

The Smithfield man will face Manly Local Court on January 19 to face charges of dangerous and negligent driving and causing bodily harm by misconduct in charge of a motor vehicle.

His licence has been suspended.