List of Physical Visualizations
and Related Artifacts

1941 – Traffic Flow Profiles of the Interregional Highway System

2D area diagrams encoding average daily traffic as height and color are set up along their respective highways on a background map of the US. Background map seems to be a cut-out wooden panel; area diagrams potentially cardboard, or also wood veneer. 

Source: In: Fortune, June 194, pp. 94-95. Original by-line reads "Map by PRA. Photograph by Richard Carver Wood". PRA is presumably the Public Roads Administration (cf. Accessed via (Last visit: 30 April 2019)

Added by Till Nagel on April 30, 2019. Category: Passive physical visualization Tags: , , , , ,