Stephanie Crotty from Yeats Close admitted injuring Alister Sykes and causing damage to his bike while driving a blue Volkswagen.
The 26-year-old was ordered to pay �400 after failing to report the accident on the A505 at the entry to the northbound A1(M) junction 9 slip road in September.
Crotty was also given seven points on her driving licence when she appeared at Stevenage Magistrates’ Court on Friday.
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