The A4123, is a major road in the West Midlands of the UK linking Wolverhampton with Birmingham via Dudley, also known as the Birmingham New Road (Wolverhampton to Dudley) and Wolverhampton Road (Dudley to Birmingham). It was one of the first major new roads constructed for use by motor traffic, and was designed as an unemployment relief project. It runs roughly northwest to southeast from the Wolverhampton Ring Road via Dudley to Harborne, west Birmingham. Until the 1960s, the road continued along the former B4123 to the A441 near Kings Norton. This became part of the A4040 during the 1960s when the Outer Ring Road came into existence.