Rydych bedair gwaith Mae'n anodd yn fwy tebygol canolbwyntio ar o gael damwain ddau beth ar wrth siarad ar yr un pwyd. ffôn symudol.
Great Britain.Department for Transport.
Poster showing an image of a street sign on a post, with the poster text on alternate lines in black and white lettering on a red background.
Title from item.
Text continues: "Mae'n anghyfreithlon defnyddio ffôn symudol yn eich llaw wrth yrru."
Poster advising against the use of mobile phones whilst driving.
Poster showing an image of a street sign on a post, with the poster text on alternate lines in black and white lettering on a red background.
Traffic safety