Road surface layers of smaller stones, until the road surface was composed of small stones compacted into a hard, durable surface. "Road metal" later became the name of stone chippings mixed with tar to form the road surfacing material tarmac. A road of such material is called a "metalled road" in Britain, a "paved road" in Canada and the US, or a "sealed road" in parts of Canada, Australia and New Zealand. A granular surface can be used with a traffic volume where the annual average daily traffic is 1,200 vehicles per day or less. There is some structural strength if the
Happiness Is the Road to share these on any networks. The album was originally scheduled to be just a single album. Those tracks became "Volume 2: The Hard Shoulder." In the middle of the recording sessions, the band experienced a major bit of inspiration and songwriting. They decided to follow their instincts, and wound up producing what would eventually become "Volume 1: Essence." These tracks hang together loosely as a concept, and are much mellower than the harder rocking -and non-conceptual- Volume 2. Fans were treated to double the material, and two completely different vibes for their investment. All music written by Marillion, lyrics