Complex sentence: It follows the former Great Western Railway track bed from Birmingham Snow Hill railway station to the former Wolverhampton Low Level via West Bromwich until Priestfield in Wolverhampton, after that it becomes a tramway proper and runs along the Bilston Road into Wolverhampton city centre.
Split into simpler sentences: It follows the former Great Western Railway track bed from Birmingham Snow Hill railway station to the former Wolverhampton Low Level via West Bromwich until Priestfield in Wolverhampton. After that, it becomes a tramway proper and runs along the Bilston Road into Wolverhampton city centre.