Complex sentence: Boris Johnson, the current Mayor of London has promised to rid the city of the controversial buses, all articulated buses on route 38 have already been decommissioned and he aims to replace all remaining buses within 12 years with a new generation of open-platform Routemaster.
Split into simpler sentences: Boris Johnson, the current Mayor of London has promised to rid the city of the controversial buses and all articulated buses on route 38 already been decommissioned. He aims to replace all remaining buses within 12 years with a new generation of open-platform Routemaster.