Complex sentence: With the opening of the M40 extension in 1990 from junction 8linking with the M42 near Birminghammuch of the route was downgraded in importance-with the sections between Bicester and the M42 near Solihull being renumbered as the A4141, A4177 and B4100.
Split into simpler sentences: With the opening of the M40 extension in 1990 from junction 8linking with the M42 near Birminghammuch of the route was downgraded in importance. The sections between Bicester and the M42 near Solihull were classified A4141, A4177 and B4100.