Mae'r Gweinidog Trafnidiaeth, Ken Skates, wedi cyhoeddi bod llai o wrthdrawiadau wedi digwydd ar Allt Rhuallt ar yr A55 tua'r gorllewin ers dechrau'r cynllun treialu camerâu cyflymder cyfartalog ym mis Mehefin y llynedd.
There have been fewer collisions on the A55 Rhuallt Hill westbound since the trial of average speed cameras began in June last year, Transport Minister Ken Skates has said.