Managing Roadside Vegetation without Herbicides
http://www.pesticide.org/solutions/home-and-garden-toolbox/weed-solutions/roadside-spray-alternatives
Changing Roadside Spray Policies
http://www.pesticide.org/get-the-facts/ncap-publications-and-reports/general-reports-and-publications/journal-of-pesticide-reform/journal-of-pesticide-reform-articles/roadsidespray.pdf
More to come...