Douglas Cairns, operator manager for Transport Scotland, said disruption was likely across Scotland, with the worst impact expected in the amber warning area.
He told BBC Scotland News: “We’re likely to see quite a bit of disruption with that warning in place, so we are asking travellers to plan ahead and be aware of the conditions.”
Mr Cairns said drivers should check weather forecasts and consider taking supplies such as extra clothing if they go ahead with journeys.
He also urged people to let their family know of any travel plans.
West coast ferry operator CalMac said disruption to its services were likely, and asked passengers to check its website for updates, external.
Motoring organisation the AA has urged drivers to plan ahead.
The organisation’s Shaun Jones said: “Storm Amy is shaping up to be a serious weather event, and we’re already seeing signs of disruption.
“Drivers need to be alert, plan ahead, and avoid taking risks.
“High winds can make handling a vehicle more difficult, especially for high-sided vehicles, and surface water can hide potholes or cause aquaplaning.
“If you come across a flooded road, we recommend you find an alternative route rather than risking driving through floodwater.”
