The effect of the order will be to temporarily prohibit all vehicles, other than those being used by the emergency services, from entering the laybys between Menai Bridge and Junction 8A of the A55.
Effaith y gorchymyn fydd gwahardd dros dro bob cerbyd, ac eithrio’r rhai a ddefnyddir gan y gwasanaethau brys, rhag mynd i’r cilfannau rhwng Porthaethwy a Chyffordd 8A yr A55.