Drivers have been warned to expect delays if they head north out of Brighton after Sussex Police said that five lorries had jack-knifed on the A23 between Patcham and Handcross.
Earlier there were reports of a jack-knifed lorry east of Brighton and the A259 coast road being closed at Rottingdean.
And this morning the A27 Brighton Bypass was closed westbound between the A270 Lewes Road at Falmer and the A23 London Road at Patcham. A snow plough failed to make it along the route.
Brighton and Hove Buses warned of delays because of the UK Uncut protest which started at the Clock Tower in Brighton at noon although just a few dozen people appeared to be taking part in it.
Bus services were also affected by the snow and ice, with a number of routes not reaching the hillier roads in the suburbs such as Hangleton.
Sussex Police urged drivers to prepare properly for their journey if they had to travel.
A spokesman said: “Remember to check local weather reports for the weather along your route before you leave.
“If you must set out, carry blankets, food and a flask of hot drink in case you get stuck and have a shovel or spade to help with digging out your vehicle or clearing a path in snow or ice.
“Remember, conditions may worsen en route so be prepared.”
Fewer shoppers than normal were out in Western Road, Brighton, and Brighton and Hove Albion’s match against Notts County at Withdean last night fell victim to the weather.
Brighton and Hove City Council said: “Table salt can be used to treat surfaces. One tablespoon will treat one square metre.
“Grit and salt should be used, not hot water which can refreeze.”
Brighton and Hove looks likely to escape any more substantial snow this weekend although temperatures are likely to remain freezing or below until Monday morning at the earliest.
Use of salt should not be encouraged. Indeed it should be a solution of last resort when the ground is not much below 0 degrees cold. Salt is avoided in Canada due to soil contamination by salt accumulations which forced a rethink some years ago.
The Government of Canada is not banning the use of road salts or proposing any measures that would compromise or reduce road safety. In 2004 they set up a risk assessment working group to enable municipalities to plan and apply road salting strategies advised by research and study. Salting roads does affect the freshwater ecosystem, however the quantity of salt used on Canadian roads bears no comparison to the amount that is applied here in the UK. Compare a light sprinkle on your salad to a kilo bag thrown on your dinner table! Salting is good, it saves broken bones and smashed cars.