Concept
Version 7
Created by Boundless
Policy Formulation
1950s Highways
Building highways is one example of a policy that was used to address the issue of traffic safety.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"AERIAL VIEW LOOKING NORTHEAST AT THE OHIO TURNPIKE OF THE 1950'S AND THE INTERSTATE OF THE 1960'S AS THE HIGHWAYS... - NARA - 558049."
http://commons.wikimedia.org/wiki/File:AERIAL_VIEW_LOOKING_NORTHEAST_AT_THE_OHIO_TURNPIKE_OF_THE_1950'S_AND_THE_INTERSTATE_OF_THE_1960'S_AS_THE_HIGHWAYS..._-_NARA_-_558049.jpg
Wikimedia
Public domain.