It took hours for emergency services to clear away debris from a truck crash on Monday night at the northbound service station on the M1, just past Wyong.

A truck being transported on the back of a flat-bed semi-trailer became wedged under the roof of the truck stop section of the Caltex service station.

A crane was on site to help with the salvage operation and an exclusion safety zone was set up while emergency services crews removed the truck and the roof was stabilised.

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