Up to 3,000 people are expected to visit Stonehenge on the morning of Friday, 22 December, and with limited parking on site, English Heritage is once again urging visitors to use public transport or car share.
The Monument Field will be opened at approximately 7.45am, dependent on light levels, and will close at 10am.
To assist the flow of traffic both before and after the event, a 40mph speed limit will be in place on the A303 between the Countess roundabout and Longbarrow roundabout, with the lay-bys closed in between.
Gareth Price, Highways England emergency planning officer for the south west, said:
We are anticipating traffic volumes to increase around the event, and our aim is to keep the Highways England network running while keeping road users safe and informed.
The traffic management will be in place for safety and to keep disruption to a minimum, and we advise all road users to check our traffic and travel information channels, plan their journeys and allow plenty of time.
Drivers can obtain up-to-the-minute travel information on Twitter, by phoning the Highways England Information Line on 0300 123 5000 or by accessing the website.
Find out more information on the Winter Solstice event.
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.