THE AvonLink train service, between Northam and Perth, will be expanded from December 1 thanks to funding from the State Government's Royalties for Regions program.
The Liberal National Government will provide $6.575 million over three years, catering for passengers on two extra return services on Mondays, Tuesdays, Thursdays and Fridays, a new return service on weekends and one return service for 10 special events per year.
In August last year it was revealed buses would replace the Avonlink from the end of this year, saving taxpayers between $800,000 and $900,000 annually.
Two reasons cited were low patronage and high operating costs.
Avon Valley residents jointly signed two petitions urging the government to keep the AvonLink open.
The State Government backflipped on its decision to scrap the service, retaining it initially for a period of six months.
Regional Development Minister Terry Redman said the expanded service would encourage further growth and increased sustainability of the Avon region.
"Local communities depend heavily on the AvonLink service," Mr Redman said.
"This funding will provide them with reliable public transport to access employment, higher education and other metropolitan-based services.
"The service will support Avon events and experiences, with one return service to be provided for 10 special events per year."
The proposal for the new service was developed by a working group of representatives from the Public Transport Authority, Wheatbelt Development Commission, Shires of Northam and Toodyay and community representatives.
Transport Minister Dean Nalder said patronage on the service would be reviewed after 18 months to ensure the project was on track.
"This Government has listened to concerns from the community and is prepared to support the continuation of this service, if enough people use the service to justify our investment," Mr Nalder said.