A series of rolling road blocks in the Conwy, Penmaenbach and Penyclip tunnels were completed today.

A Traffic Wales spokesman said: “Tests have been completed this morning on the video detection and PA systems in the Conwy, Penmaenbach and Pen-y-Clip tunnels on the A55.

"These tests, which were carried out to ensure the safety of the travelling public, only took a few minutes at a time meaning there was minimal disruption for drivers.”