Is my idea for the dynamic road systems scalable to current road networks or will new road constructs need to be developed?  I think the current networks will work perfectly.  Because the main construct I think will be the figure-eight.  This will allow the system to change.  This is already present in most networks in terms of blocks and circles.

If it works it would be incredibly useful, here are some quotes on the subject:

The World Bank estimates traffic congestion costs Egypt 8 Billion dollars per year, which is approximately 4% of Egypt’s GDP [1].

http://d2dtl5nnlpfr0r.cloudfront.net/tti.tamu.edu/documents/mobility-report-2012.pdf

[1] World Bank, 2012, “Traffic Congestion in Cairo: An overview of the causes as well as possible solutions,” Report 71852, Washington D.C.