Motorists are experiencing rush-hour delays in Wymondham after a collision involving two tractors.
Police were called to the incident on London Road at around 8.50am this morning.
The collision tipped a woodchipper over and left diesel on the road.
The road is currently blocked near the fire station.
First Norwich have warned passengers to expect delays to their green and turquoise line.
No-one is believed to have been injured.
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