Police are appealing for witnesses and information as part of their continued enquiries into a collision on the A414, near the Park Street roundabout.
The incident occurred sometime between 6.20am and 6.40am, on Tuesday, February 8.
It was reported that a man was riding along the hard shoulder of the westbound carriageway, between St Albans and Hemel Hempstead, when he was knocked off his bicycle just after the Park Street roundabout by an unknown vehicle, which did not stop at the scene.
The cyclist was taken to hospital where it was ascertained he had sustained serious injuries. He was released a week later and continues to recover at home.
PC Amy Nugent, who is investigating, said: “Our enquiries are continuing at this time to trace the vehicle involved in the collision.
“If you were driving in the area at the time and have dash cam fitted to your vehicle, we’d ask you to please review any footage and contact us if you believe you may have captured something of note.
“If you have any other information at all, we’d like to hear from you.”
Anyone with information is asked to please email firstname.lastname@example.org
You can also report information online at herts.police.uk/report, speak to an operator in our Force Communications Room via our online web chat at herts.police.uk/contact or call the non-emergency number 101, quoting ISR 74 of 8 February, 2022.