Vauxhall Corsa driver Andrew Bartlett, 20, of Hamer Close, Bovingdon, collided with a bicycle being ridden by George Cooper in Box Lane at about 11.30pm on Saturday, August 8.
Although Bartlett left the scene, police matched debris left behind to Bartlett's damaged car and he was arrested at his home address three days later.
On Friday Hemel Hempstead magistrates banned Bartlett from driving for nine months.
He received a 16-week prison sentence which was suspended for 18 months. A contribution to prosecution costs of £85 was ordered to be paid.