Why to check your mirrors when moving your vehicle left or right!

This is a video from a very good friend of mine and its in Swansea. Some of you will know the road.

He's lucky this time, but it shows why you MUST check your mirrors before moving your vehicle.

He was perfectly in his right to undertake this maneouvre while none of the cars were moving around the lorry.

Just think if the driver had done it quicker or wider, my friend might not be here anymore!