Mae disgwyl i hynny sicrhau arbedion effeithlonrwydd o 15-20% ar brosiectau newydd, a chan ddefnyddio'r ffigurau ar gyfer cyfalaf trafnidiaeth dros y tair blynedd nesaf sydd yn y gyllideb ddrafft ar gyfer 2018/19, gallai sbarduno arbedion effeithlonrwydd o hyd at £630 miliwn dros ddeng mlynedd.
This is expected to drive efficiencies of between 15 -20% on new projects, and taking the 2018/19 draft published budget figures for transport capital over the next 3 years as a benchmark, could  drive efficiencies of up to £630m over a ten year period.