The service every Tuesday will depart Bigga at 7.55am and arrive in Goulburn at 9.25am, via Binda (8.20am), Crookwell (8.35am) and Grabben Gullen (8.45am).

It will connect with a train service to Canberra, leaving Goulburn at 9.44am to arrive 11.20pm.

The return service will depart Canberra Railway Station (Kingston) at 5.08pm, arriving Goulburn 6.35pm to connect with the coach service, departing 7.15pm to arrive at Bigga at 8.55pm (via Grabben Gullen, 7.55pm; Crookwell, 8.15pm; and Binda, 8.30pm).

NSW TrainLink will operate the service.

Deputy Premier and regional minister John Barilaro, regional transport and roads minister Paul Toole and Goulburn MP Wendy Tuckerman announced the route on December 5.

It is one of six services that has been fast-tracked into operation as part of the state government's planned 13 transport links for regional and remote communities.

This was an election commitment by the NSW Government to better connect regional communities.

Mrs Tuckerman said it was part of a commitment to support local economies.

"It will mean more opportunities to visit friends and families, to go shopping [and] attend medical appointments," Mrs Tuckerman said.

It "could even open up new employment opportunities," she said.

Mr Toole said the new routes would be a game-changer.

"These new services will initially commence on a trial basis, allowing us to make the right changes in response to feedback to improve connections and better service local communities," Mr Toole said.

"We have had great success with earlier coach trials and have now permanently timetabled the Tamworth to Dubbo and the Tamworth to Port Macquarie service after a fantastic response from the public."

The other services will begin in the first half of 2020.

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