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Traffic delays built up after a car broke down on a busy route during rush-hour.
Kent County Council's highways department said that holdups were on the A249 at Detling Hill.
It was on the road heading north near the Kent Showground entrance.
A tweet from KCC Highways said: "Delays building quickly and currently stretching back towards the M20 J7 roundabout.
"Please allow extra time for your journey."
Police said a broken down car was reported to be blocking the Sittingbourne carriageway at 7.08am.
A spokesman said: "Police attended and the road was clear by 7.50am."
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