Fifteen drivers were caught speeding and will receive letters of advice following a Community Speed Watch event on a busy stretch of road in Glossop.
The Hadfield Community Speed Watch team were on the A57 Sheffield Road, at the bottom of the Snake Pass, on Tuesday afternoon (8 September) between 2pm and 3pm.
The speed limit on the road is 30 miles per hour.
In total, 297 vehicles went past in both directions during the hour. Of those, 15 were recorded driving at speeds in excess of 36 miles per hour.
Hadfield Police's Safer Neighbourhood Team say the owners of those vehicles will now receive letters of advice about speeding.
They added: "A great big thank you to the two volunteers who completed the event. We ask as always that those who drive in our area respect the speed limit. Slow down and stay safe."
Community Speed Watch is a community-based, education-centred scheme that helps ordinary people make a significant contribution to improving the safety of our roads.
There have been events all across Glossopdale recently - including in Simmondley, Hadfield and Tintwistle.