Snow gates are to be installed on the A628 Woodhead Pass to stop motorists trying to use the road during spells of bad weather.
Advance warning signs are also to be erected to advise motorists the road is closed before they get there.
The road, linking South Yorkshire and Greater Manchester, is regularly closed during winter months because snow and ice makes it impassable.
Work to install the gates and warning signs, costing around £250,000, should be complete by the end of March.
The gates, which will be operated manually by police and Highways Agency, are to be sited to the west of the Dog and Partridge Inn near Flouch Roundabout and at Val’s Place roadside cafe to the east of the A6024.
The signs will be on the east and westbound approaches to the route at the Flouch Roundabout at the junction of the A628 and A616, Westwood Roundabout at the junction of the A61 and A616 and Mottram Roundabout on the A57 in Greater Manchester.
Highways Agency project manager Sujad Hussain said: “The Agency’s winter crews work round-the-clock to ensure the Woodhead Pass remains open in bad weather, but sometimes a decision has to be taken by the police in conjunction with the Agency to close the road to ensure the safety of drivers.
“The new gates and signs will help us do this more efficiently and effectively – and the warning signs mean that drivers will have more time to plan alternative routes.”
Anthony Ashton, South Yorkshire Police’s traffic management officer said: “The gates will improve safety by acting as a physical barrier to stop drivers from attempting the route in bad weather.”