Complex sentence: Up to 1923 the area was controlled by two signal boxes, the Station signal box controlling the station area and the Junction signal box controlling the junction between the Severn Valley line and the double track line across the Albert Edward Bridge towards Lightmoor Junction.
Split into simpler sentences: Up to 1923 the area was controlled by two signal boxes. The Station signal box controlling the station area and the Junction signal box controlling the junction between the Severn Valley line and the double track line across the Albert Edward Bridge towards Lightmoor junction.