Further delays are expected to the repair of a road in Oxfordshire which split in two following heavy rain last December.
People living close to the A4183 at Boars Hill say neighbouring routes are being used as rat runs.
Oxfordshire County Council said that "no timeframe to remedy the issue had yet been agreed".
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The RMT union has accused Southern of inventing figures which the company claims show record numbers of guards are going sick.
Thursday morning's weather for the west of the region
Thursday morning's weather for the east of the region