"Avoid any sudden steering movements or heavy breaking, and maintain a safe distance from the vehicle in front and using dipped headlights".
The Met Office has updated a yellow "be aware" warning of snow and ice to cover much of Scotland, north Wales and England down to southern parts.
Showers will become increasingly confined to eastern coasts on Sunday and it will become largely dry, though there is a threat of rain for a time along the south coast overnight.
He said: "It was really frightful as you would imagine".
Forecasters have warned of more tricky conditions for people travelling in Scotland as the cold snap continues.
The Met Office has issued warnings that run throughout today and into tomorrow for our region.
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Drivers were urged to plan ahead for their journey and expect possible travel delays in the warning areas of Central, Tayside and Fife, the Highlands, the Western and Northern Isles, south west Scotland, the Lothians, Borders and Strathclyde.
The showers will turn heavy in the north and northwest of the country where some further accumulations of snow are likely.
Drivers abandoned their cars on the roads as they tried to reach the resorts where auto parks were full and police said high volumes of traffic hampered the efforts of gritters.
NetworkRail Scotland said it had faced some challenges because of snow.
Agencies are now working to keep the traffic moving.
The Met Office predicts that up to 8cm (3in) of snow could fall at low levels on Tuesday, and more than 15cm (5in) over higher ground.
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Federer pounced immediately at the start of the second to gain another break and cantered through the rest of the match . The 30-year-old Russian, ranked 61, breezed past Maria 6-1, 6-4 to make the second round. "Lindsay is fantastic .
"Snow showers will affect the northwest of the United Kingdom during Thursday and Friday, although often falling as sleet and hail near windward coasts". It's pretty bleak out there in some places.
Ferry services were cancelled and air travel was hit - Inverness airport was closed for most of the morning while there was disruption to flights at Aberdeen and Glasgow, the latter briefly closed to allow clearing operations.
Heavy snow showers had already fallen across parts of northern England, Northern Ireland and Scotland throughout Friday causing some disruption.
Officers said there was a "high risk" of disruption and delays, especially in Scotland.
This comes after hundreds of drivers spent the night in their cars on the motorway after conditions rendered travel impossible.
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