Complex sentence: By Autumn 2016 all-electric Irazar i2e buses, with planned end-of-life battery management, will be introduced on routes 507 and 521 in central London; all vehicles on these two routes will then be electrically powered.
Split into simpler sentences: By Autumn 2016 all-electric IrIzar i2e buses, with planned end-of-life battery management, will be introduced on routes 507 and 521 in central London. All vehicles on these two routes will then be electrically powered.