Freezing Fog and Black Ice Threaten Travel on South Island Highways

South Island motorists are being urged to exercise caution as freezing fog and black ice pose significant risks on State Highways 8 and 80. The New Zealand Transport Agency (NZTA) has issued a warning that these hazardous conditions are expected to persist for several days, particularly in the Mackenzie Basin area.

According to NZTA, freezing fog is likely to linger throughout the day in some parts of State Highways 8 and 80, with the area between Twizel and Tekapo on Highway 8 being especially at risk. This is compounded by the potential for black ice, which forms when moisture on the road freezes rapidly, creating a thin, transparent layer that is nearly invisible to drivers.

Chris Chambers, a maintenance contract manager for NZTA, emphasized the increased danger posed by these conditions. 'These types of conditions are not new for roads in the Mackenzie Basin area, but it is important that motorists take notice and adjust their driving for the conditions,' he said. 'Especially when there is an increased risk like this over a number of days.'

Chambers also noted that the freezing fog is expected to persist into the mornings, increasing the risk of black ice during these times. He urged drivers to slow down, increase their following distances, and use headlights to improve visibility. 'All of this means increased risk of accidents and injury,' he said.

Roading contractors are currently conducting checks on the affected highways and will be gritting or de-icing the roads as necessary. However, Chambers advised that travelers should consider avoiding unnecessary journeys if possible. 'We have the option of closing sections of highway, or introducing restrictions, if the conditions warrant it,' he said. 'Our preference is to keep the roads open, and motorists can help us do that by driving with caution or staying off the roads if they can.'

With temperatures expected to remain low and fog conditions likely to persist, the NZTA is urging all drivers to remain vigilant and prepared for sudden changes in road conditions. It is also recommended that drivers carry emergency supplies, such as blankets, food, and a fully charged phone, in case they become stranded.

As the region braces for these challenging weather conditions, the NZTA is working closely with roading contractors to ensure that the highways remain as safe as possible for those who must travel. However, the agency is clear that the best course of action is to avoid unnecessary travel and to prioritize safety above all else.