Complex sentence: The A259 is a busy road on the south coast of England passing through Hampshire, West Sussex, East Sussex and part Kent, part of which was named as'the most dangerous road in South East England' in 2008.
Split into simpler sentences: The A259 is a busy road on the south coast of England passing through Hampshire, West Sussex, East Sussex and part of Kent. Part of the road was named "the most dangerous road in South East England" in 2008.