The B1538 is the 'DN7 Hatfield Link Road', which opened in December 2020 and is part of the 'Unity DN7' development plan for the area between Hatfield, Stainforth and the M18.
It starts at a roundabout to the west of the M18/M180 roundabout, which it is connected to by motorway link roads and also provides access to Doncaster North Services.
From there it runs roughly west to a roundabout where it meets Bootham Lane, providing access to Hatfield, and continues north-west with a bridge across the railway line to a roundabout on the Hatfield Colliery site, providing access to Stainforth via Waggons Way.
It has a 40mph limit throughout, with 'no waiting' and 'no loading' restrictions along the full length. At the time of opening, there are numerous road stubs leading off the road and the roundabouts ready for development of the surrounding land, and the road does not meet any other classified roads apart from the connection to the M18 and M180.