The A38 is blocked due to an accident involving two vehicles at the A3259 / Doster's Lane junction.
It's near the Monkton Elm Garden Centre, and is affecting traffic into and out of Taunton.
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It comes after a fire at the Grandy Industrial Estate this morning - the second in a matter of days.
Early showers clearing, becoming warmer.
The protest comes just a day after the Clinical Commissioning Group recommended the closure of four community hospitals in South Devon.