How salt keeps the Sussex traffic moving in freezing winter weather

Salt is more than something to sprinkle on to your fish and chips, this common household ingredient helps keeps England's roads moving.
Keeping the roads openKeeping the roads open
Keeping the roads open

As temperatures are forecast to remain cold across the country Highways England’s army of workers are ready 24/7 to descend on to motorways and major A roads across Sussex in a fleet of gritters, to keep traffic moving. Here’s the story of how the operation works.