[euromodder]

It's a persistent & cultivated myth that more roads attract more traffic.
Traffic increases anyway, regardless of wether new roads are built or not.
More people growing ever older, emancipation, a more active lifestyle, for a longer period of our life, have all lead to more traffic.

Over here, in the late 70s, construction of many planned main roads was put on halt , and there weren't many new main roads built since.
Population however, increased by over 10%.
Traffic boomed.
While the number and km of roads still increased, many of those were residential - and the residents all had and have to get away over the same main road system.
Only fairly recently, some of the so-called missing links have been or are being built to ease off traffic on the other roads.