Werribee resident Colin McIntyre says journey times to Geelong could almost double under the plans.

Train and car travel times between Newport and Geelong are at the moment almost the same, though train travel times are likely to increase from about 47 minutes to 90 minutes, under the project.

Mr McIntyre said it would further add to the pain already suffered by those commuting between the south western suburbs and the Geelong region.

"Unlike other regional train services, which stop almost all of the time as they leave or enter the suburban network, the majority of those between Geelong and the south western suburbs are on a two-hour frequency for a large part of the day," he said.

"The current service is totally inequitable; it keeps people poor."

Mr McIntyre said under the Regional Rail Link, due to be finished in 2014, regional trains would no longer travel through Newport or Werribee.

They will leave the existing route after Little River on new tracks to go around Werribee, through Wyndham Vale and Tarneit, before connecting with the rail corridor at Deer Park and on to Southern Cross station.

Mr McIntyre said this would add between 17 minutes and 45 minutes from Newport, depending on whether people could catch the train at Footscray or had to travel to Southern Cross or Sunshine. "As not all trains to Geelong currently stop at Footscray, there's no reason to think they will all stop in the future."

Mr McIntyre said it was very difficult for people who lived in suburbs between Yarraville and Werribee and worked or studied in Geelong or vice-versa to use a train.

He discovered the inequity when his mother, who was being treated for breast cancer at the time, was forced to take a taxi to Geelong on one occasion.

"The previous time she had to wait for 75 minutes at Geelong for the train she needed, because trains to Warrnambool never stopped at Newport or Werribee." Regional Rail Link spokeswoman Amanda Correy said it was still "investigating" bus from Wyndham Vale, and she said it would be co-ordinated with train arrivals at Werribee station.

Mr McIntyre said there were two groups of people who used trains. "Those who choose to use it and those with no other option."