Interimmeasures to help prevent traffic queuing back on to the M5 were implemented at the junction in 2006, which included extending the exit slip roads.
These are often issued as interimmeasures pending a full court hearing, on the grounds that a breach of privacy, if it were permitted, would be irreversible.
The five-party coalition had entered office on the back of a series of confidence-building initiatives agreed by the previous interim government, which included a cross-party agreement on the 2008 budget and a modest package of devolution measures.