There is still no end in sight to the long-running misery for train users in Scotland.
Many ScotRail services between now and Saturday will be affected by the latest round of action by RMT union members.
However, there was a little bit of good news yesterday when the rail firm said a few north-east and north routes will be running today as will some other services including in the central belt.
Today's services will include Aberdeen-Inverness and Aberdeen-Edinburgh.
However, ScotRail trains will only be operating on a few central belt routes on Friday and Saturday - leaving the north-east and north cut off yet again.
Russell Borthwick, chief executive of Aberdeen & Grampian Chamber of Commerce, said today: "There's no doubt that the cumulative impact of ongoing industrial action on our railways over the past year is taking its toll on businesses.
Frustrating
"It's an incredibly frustrating way to start 2023 - a year that could hold so much promise for Scotland's recovery and getting our economy firing on all cylinders once again.
"Aberdeen City and Shire make up a heavily interdependent region, which equally relies on regular and reliable links to the central belt and beyond.
These latest strikes leave our region completely isolated and have real potential to deter commuters, business travellers and visitors from bothering with the train at a time where we need to be encouraging more people back onto our railways to ensure they remain viable.
"For both parties in this latest dispute, there should be a concerted new year's resolution - get back round the table, show willing to find compromise and hammer out an agreement which will draw an end to misery on our railways early in 2023."
About 40,000 Network Rail workers are expected to take part in the latest nationwide strikes over a pay dispute.
Network Rail owns, repairs and develops the railway infrastructure - tracks, bridges, tunnels and signals - and its staff have essential safety roles.
Impact of action
ScotRail said the action meant it would not be able to run the vast majority of its services.
The company has advised passengers to check their entire journey on the its website, app or social media channels before they travel.
David Simpson, ScotRail's service delivery director, told the BBC: "We have worked really hard to add more services to the timetable for Thursday.
"We're pleased that customers will have more travel options throughout the day.
"However, we are still advising customers to check their journeys before they travel and we're reminding them that we will have to revert to our strike timetable on Friday and Saturday, which we know will be really frustrating for them."