Roedd yr astudiaeth eisoes wedi tynnu sylw at oryrru ar Allt Rhuallt tua’r gorllewin cyn i’r data diweddaraf gael eu casglu a bellach o’i herwydd a’r data goryrru diweddaraf, mae system mesur cyflymder cyfartalog yn cael ei threialu.
The study had already highlighted existing issues with traffic speeds on the Rhuallt Hill westbound before the recent data was gathered and now, as a result and with the latest speed information, average speed enforcement is being trialled in the area.