Major roads near and in Hitchin, St Albans, Royston and Hatfield will be receiving a face-lift over the next two months.
A-roads around Hertfordshire are being treated with binder and chippings in a process called surface dressing which is designed to seal and protect the tarmac and restore texture and grip.
The A600 Bedford Road north of Hitchin, the A1081 Harpenden Road and A5183 Redbourn Road in St Albans, the A505 Royston Bypass and the A414 Hertford Road east of Hatfield will all be affected.
Work is scheduled to take place outside the morning and evening rush hours to minimise disruption.
Although fast to apply and regularly swept, drivers should expect loose chippings on the road for a few days as the new surface beds in.
Herts highways has also urged everyone to drive responsibly over the new road surfaces, 20mph or slower, and expect some lane closures.
Director of environment and infrastructure at Herts county council, Mark Kemp, said: "We know that the condition of the roads matters to residents and it matters to us too.
"I appreciate that these works will be inconvenient for people, and I know that leaving lanes closed while the new surface beds in will add to that inconvenience. I do hope that people will bear with us however."
He said the new surface may "look messy" at first, but is safer in the long run.
The A600 works are scheduled to take place between May 12 and June 1, the A1081 and A5183 on May 8, the A414 between May 9 and May 30, and the A505 between May 12 and 16.
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