Mae’r camerâu’n cael eu gosod ar ôl i ddata a gasglwyd rhwng 8 Mawrth a 27 Mawrth ddangos fod miloedd o bobl yn torri’r terfyn cyflymder cyfreithlon wrth yrru i lawr Allt Rhuallt.
The system is being installed after data collected between 8 March and 27 March found thousands of people breaking the legal limit whilst travelling down the Rhuallt Hill.