Part of the M4 through Berkshire won't re-open until tomorrow morning after a lorry crash, which killed its driver.
A number of major roads across the Thames Valley have been at a standstill all day, with drivers caught in miles of tailbacks.
The lorry, carrying engine parts, crashed into the central reservation between junction 12 for Theale and junction11 for Reading, just before 5am. The eastbound carriageway - has been closed all day, with drivers diverted through Wiltshire, North Hampshire and Oxfordshire.
Reading town centre remains gridlocked this evening - several hours after the accident. Mel Bloor has our report.
Restrictions on the M4 westbound near Reading have been lifted after an accident on the eastbound carriageway.
There is still queueing traffic on the M4 Westbound between J10 A329(M) Wokingham / Bracknell and J11 A33 / B3270 (Reading). The eastbound side remains closed. The emergency services are attending to an overturned car.
The M4 is closed in both directions after an accident. An overturned car means there is queueing traffic between J11 A33 / B3270 ( Reading ) and J10 A329(M) Wokingham / Bracknell.
The accident happened shortly after 2pm. The emergency services are investigating what happened. One air ambulance has left the scene and one remains at the site.
Video report: Labour retains control of Reading. Interviews with Councillor Jo Lovelock, Lab; Cllr Ed Hopper, Con; Councillor Ricky Duveen, Lib Dem and Councillor Rob White, Green.
Video: Labour retain control of Reading.
Labour retains control of Reading, with no seat changes.
All ready for the big count in Reading. It's due to start at around 2am.
It has just been announced that 800 jobs are to go in Reading after Shell announced it is to close its offices at Thames Valley Park.
It follows a worldwide restructure by the oil company. Workers at Reading after being offered a voluntary severance package or they can relocate to Shell offices in London