Complex sentence: However, due to the increasing popularity of the service, the OmniDekkas have been swapped with newer late 2006 models from Metro route 25, which are 12 metres long and have greater capacity.
Split into simpler sentences: However, due to the increasing popularity of the service, the OmniDekkas have been swapped with newer late 2006 models from Metro route 25. These are 12 metres long and have greater capacity.