Lighting replacement at Hemel Hempstead
The A4147 starts at the A4146 on the outskirts of Hemel Hempstead, where the same roundabout also serves a minor unclassified road towards a suburb. Heading east, the road soon hits upon the old Piccotts End Road which once served the purpose of the Leighton Buzzard Road, but has been semi-bypassed. Until the roundabout with the A414 the A4147 acts as part of a ring road of sorts, skirting through the suburb of Grovehill and the Industrial Estate, whilst utilizing old alignments of the B487. There is even a short dual-carriageway section which signals the road's departure from its older alignment through Adeyfield. After the A414 the route picks up its old alignment again through Leverstock Green and continues towards St. Albans, where it ends at a roundabout with the A5183: the old A5.