Edmund King, president of the AA, has warned of people driving so-called "snowman cars" by not clearing off the piles of snow on top of their vehicles before getting behind the wheel.
Drivers must clear the snow off their windscreens, lights and tops of their cars before setting out.
This morning we have spotted lots of 'snowman cars', which are cars driving along with piles of snow on their tops.
I saw one sports car this morning on the M3 with almost a snowman of its roof but the dangerous thing was that it was being followed by a motorcycle.
The hardened snow could have been a real hazard, had it fallen off in the path of the motorcycle.
We have also seen drivers peering out of small openings on their windscreen as if they were driving a tank.
The other issue is the number of cars with their lights and indicators compacted with hardened snow.
Drivers need to take a broom to clear excess snow off their vehicles before setting out.
The Met Office has issued weather warnings across the North West as the region braces itself for strong winds, falling temperatures and more snow.
Warnings have been put out for Cheshire, Lancashire, Merseyside and Greater Manchester.
Drivers are advised to take care on the roads.
Amber and Yellow Weather Warnings are in place covering the whole of the North West.
The Amber warning is for 10 to 20cm of snow. Between two and 10cm is forecast for the areas covered by the Yellow Warning.
The North West should see some snow falling by 6am tomorrow morning, weather forecasters have said.
It will be very cold across the patch, with a biting and raw south-easterly wind. ITV Granada's Kerrie Gosney said that could cause blizzard conditions where it meets the falling snow.
Rain will push in from the west and southwest and will turn to snow as it moves inland.
But we don't yet know where exactly the snow will fall. Yesterday forecasters were predicting a UK-wide white out. The latest guidance says Merseyside and Cheshire will be worst hit in the North West.
Snow is expected to fall elsewhere in the region. Those snowfalls should be lighter but wind could cause drifting in places.
A Met Office Amber warning is still in place for the region. Areas prone to snow could see between 10 and 15cm of snow.