Weeks of roadworks on the M11 begin today - closing the southbound carriageway over night.
The first phase of the £4.7m improvements will be based around junction 8 at Stansted Airport.
The road will be closed from 10pm until 6am for the next two weeks while resurfacing is carried out.
Highways England has warned the work - which will last until the summer - will cause some disruption but insists the improvements will lead to better safety and smoother journeys on the M11.
"We understand this package of schemes will cause some disruption for drivers and we have planned to carry out the work overnight to reduce the impact.
"We have been working with Stansted Airport about these works but I would urge holiday makers and motorists to plan ahead and allow extra time in case of any delays."
At the end of February, work will take place on the M11 at junction 7, with road marking, barrier renewal and resurfacing work being done on the A120 between Trinity and Stansted.
A man who died in a car fire which closed the southbound carriageway of the M11 near Cambridge for most of Wednesday (January 13) has been named by police.
He was 43 year-old Foyzul Islam from Rothwell in Northamptonshire. His car caught fire just after 8am.
Police say there was no sign his car had collided with any other vehicle.
Investigations continue into the cause.
The southbound M11 near Cambridge is to stay closed this evening following a car fire in which a man died.
The vehicle caught fire on the carriageway at around 8:30am, causing a full closure of the southbound M11 and lane 2 of the northbound M11 between junction 12, for Barton, and junction 11, for Trumpington and the A10.
The southbound entry slip road at junction 12 has been re-opened and traffic is now being diverted up and over the junction.
Highways England say the southbound carriageway will remain closed into the evening while recovery and resurfacing continues at junction 12. The northbound carriageway is expected be fully open by 6.30pm.
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The M11 southbound near Cambridge is set to be closed for most of Wednesday after a fatal car fire.
There's severe congestion on surrounding roads including the A14.
A car caught fire on the carriageway at around 8:30am causing a full closure of the southbound M11 and lane 2 of the northbound M11 between junction 12 for Barton and junction 11 for Trumpington and the A10.
Police say there is no indication of a collision taking place or any other vehicles being involved. One person, a man, is believed to have been in the vehicle.
Highways England is advising drivers to consider alternative routes or to delay their journey if possible. The road is likely to remain closed for most of today, possibly into the evening peak, while the vehicle is recovered and the road is repaired.
"Long distance traffic is being advised to leave the M11 at junction 14 and join the A14 eastbound to junction 35, for Stow Cum Quy, continue along the A1303 and A1304, to join the A11 southbound at Six Mile Bottom and rejoin the southbound M11 at junction 9.
"Traffic already past junction 14 on the southbound M11 can exit at junction 12 and will be diverted via the A603, A1198 and A505 to rejoin the M11 at junction 10 or take the northbound A10 at Royston to rejoin at junction 11. Local traffic is advised to avoid the area and use alternative local routes.
A man has been killed in a car fire on the M11 in Cambridgeshire.
The motorway is closed southbound at Junction 13. Police and other emergency services are currently at the scene.
Reports came in of a car on fire on the southbound carriageway of the road near junction 12, just after Barton, at about 8.10am.
Drivers are advised to avoid the area.
There is no indication at this time of a collision taking place or any other vehicles being involved. One person, a man, is believed to have been in the vehicle.
"Road users are advised to exit at J11 and take A603 westbound followed by the A1198 southbound to Royston.
Traffic should then take the A505 eastbound, remaining on the A505 eastbound to get to J10 or alternatively take the A10 northbound off onto the A505 to J11 of the M11."
Drivers in Essex are being warned that two slip roads linking the M25 and the M11 are still closed following a serious crash overnight.
The slip road from the anti-clockwise M25 to the northbound M11 and from the northbound M11 to the clockwise M25 are both closed after a lorry a lorry struck a bridge and overturned just before midnight on Sunday night.
Drivers approaching the closures are being directed to continue to the next junction, where they can turn around and approach the junction in the other direction.
"Signs across the motorway network and on London’s road network have been set to warn drivers of the restrictions, and customers are encouraged to allow extra time for their journeys if they intend to travel in this area on Monday morning."
Essex Police are investigating the incident and there is is debris and diesel to clear from the road. The bridge that was struck will also need to be assessed, and the carriageway may need to be resurfaced due to the diesel spillage.
A man has been arrested on suspicion of causing death by dangerous driving after a three vehicle crash on the M11.
A van and two cars were involved in the crash on the northbound carriageway near the turning for Saffron Walden on the Cambridgeshire/Essex border.
A 47 year old man from Chatham in Kent died at the scene, three other people were injured.
The driver of the van was taken to hospital but later arrested and bailed pending further enquiries.
The road was closed between Junction 10 at Duxford and Junction 8 at Bishop's Stortford for six hours whilst investigations were carried out.
The Highways Agency has confirmed it is considering a ban on lorries overtaking on a stretch of the M11 in Essex.
It comes after Essex county councillors asked for restrictions to be imposed between junctions 8 and 9, near Harlow.
The changes could be implemented later this year.