The A1(M) southbound is closed between Junction 8 for Stevenage and Junction 9 for Letchworth Gate after a pedestrian was hit by a car this evening.
Police and fire crews from Stevenage, Hitchin and Baldock were called at 5.17pm, to reports of a person being hit by a car.
Emergency services are still at the scene and delays of up to an hour are expected.
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