We will continue to assess CO2 and other emissions from different modes of transport, as well as tonnes of carbon generated per person per kilometre travelled by different modes.
Byddwn yn parhau i asesu CO 2 ac allyriadau eraill o wahanol fathau o drafnidiaeth, yn ogystal â thunelli o garbon a gynhyrchir gan wahanol ddulliau teithio fesul person fesul cilomedr a deithir.