Motorist Robert Bell has been found guilty at Cardiff Magistrates Court of driving without due care and attention.
District Judge Bodfan Jenkins accepted Mr Bell was coughing before and at the time of the accident, but says he believes his eyes were open as his car swerved across the road and he failed to deal with his coughing properly.
Robert Bell lost control of his car, injuring school children, parents and a lollipop lady outside Rhws Primary School in the Vale of Glamorgan on 30th June last year.
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The 25-year-old, known locally as Bilal, was arrested on Tuesday in Newport. Two men were also arrested the following morning in the city.