Special Weather Statement issued November 28 at 11:23PM EST by NWS

…Black Ice Expected Across Parts Of The North Country… Pockets of light freezing drizzle will continue across northern New York and Vermont through the early morning hours on Friday. This has led to the formation of black ice in some spots…especially on secondary and untreated roads. Be aware travel conditions can change quickly when encountering these pockets of freezing

Source: National Weather Service Alerts for Vermont