Train drivers are on strike, so commuters in NSW have been warned to expect significant delays.
There will be a lot of train delays and cancellations during the work week.
Train services in NSW are expected to be cut by up to 75% this week because of a strike. Commuters are being warned to prepare for big delays.
The Rail, Tram, and Bus Union (RTBU) has started to take action, which could cause Sydney Trains and NSW TrainLink to be late or stop running.
Due to the strike, Sydney trains will only be able to go at a speed of 60km/h on Tuesday.
Transport for NSW said in a statement, "As a result, trains on suburban lines are expected to run on a different schedule on Tuesday, with up to 50 percent less service during peak hours."
If there are more strikes on Thursday, the Sydney Trains network could be up to 70% smaller during peak times.
Transport for NSW said, "Customers should expect disruptions like delays, different stopping patterns, and cancellations.”
On Thursday, June 30, and Friday, July 1, there will be a big cut in intercity and regional service to the Central Coast, Newcastle, Hunter, Blue Mountains, Southern Highlands, and South Coast lines.
Train drivers won't drive foreign-made trains, which make up about 70% of the rail fleet, on Friday.
Services during rush hours may be cut by as much as 75%, and in some places, only a small number of buses will replace trains.
The RTBU is taking action because it is worried about the safety of a new fleet of trains made in Korea. The union says that the trains need to be changed to keep passengers safe.
David Elliott, who is in charge of transportation, says he is open to the changes "as long as it doesn't cost taxpayers more than it needs to" and "as long as it doesn't void the warrant."
"At a time when the NSW economy is facing headwinds, I think it would be irresponsible to waste money on all the changes that the union has asked for," he told Sydney radio station 2GB on Monday.
After the NSW government canceled a meeting with the union that was supposed to take place on Friday, there have been problems all week.
"It's beyond disappointing that the NSW Government keeps playing political games at the expense of workers and commuters," said Alex Claassens, Secretary of the RTBU NSW.
"Railway workers have always done what they thought was right. All we want is for the government to solve the basic safety and workforce issues we've been talking about for months.