Hazardous driving conditions have caused delays and streets to be blocked across south Norfolk and north Suffolk.
Traffic running through Diss has been almost at a standstill, with reports of a lorry jackknifed between Roydon and Diss.
Cars are also struggling to get up Market Hill in Diss.
Elsewhere, the A140 at Scole is blocked northbound after the A1066 The Street junction because of snow, and in Harleston snow and ice is causing slow moving traffic on the A143 at the B1134 High Road junction.
If you have any updates on problems in the area email firstname.lastname@example.org or call 01379 658002.