Bydd y mesurau eraill yn cynnwys gosod rhagor o arwyddion er mwyn esmwytho llif y traffig. Mae disgwyl i'r mesurau wella ansawdd aer ar unwaith, a gallai'r allyriadau fod 18% yn is yn y pum lleoliad.
Other measures include increased signage to promote smooth traffic flow. The measures are expected to deliver immediate improvements to air quality, with emissions estimated to potentially reduce by up to 18% at the five locations.