'Westra lage wegas rehtas, nu isti sa wraithas' - 'A straight road lay westwards, now it is bent'.
These themes come from The Lost Road by J.R.R. Tolkien; the Straight Road is said to go through 'Ilmen' which is the 'higher air', whilst the 'lower air' is named 'Wilwa'. These kind of themes can be found within Hindu Lore relating to the true meaning of the 'Flat Earth' which relates not to a physical Earth that is flat, but to a Spiritual Earth which is within layers of realms or 'airs'.
Christopher Tolkien says -
'Alboin's biography sketched in these chapters is in many respects closely modelled on my father's own life....'
It is thus not well known that Tolkien was given his languages from dreams, and these have later been confirmed to be related to the known Indo-European Tongues. This idea can be found in The Lost Road and thus Tolkien cannot be seen as one of the established materialistic scholars of modern times.
The Straight Road leads to the 'True West' and this theme is repeated time and time again in ancient mythologies. This is the 'Road to the Dead', the 'Road to the West' which is the 'Land of the Dead', the 'Land of the Setting Sun'. After the sinking of At-al-land the Straight Road was bent by the gods, and only the few could see the 'Land of the Gods' after this.
Since the runes have to be carved as straight lines they link to this theme of the Straight Road. I have expanded upon this in the latest Spear of Woden so I will not go any further with this here. Suffice it to say that, being straight lines, the Ancient Runes fulfil the role of being 'royal' or 'regal' in the sense that these terms stem from an Indo-European Root meaning 'to move in a straight line' and are linked to the idea of the Ley-Lines around the Earth, as well as the idea of the Straight Road.