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.”
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here