Government Documents

http://www.marines.mil/unit/2ndmardiv/8thmarreg/Pages/Marines,Afghanpolicebuildbasetosecureroads.aspx

This article is about how the Marines and Afghan police have assembled a base to secure the roads.
http://www.tsa.gov/press/happenings/highway_watch.shtm

This article is about how the Transportation Security Administration is protecting 3.8 million miles of roads.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1693477/

This article is about how the eviornment is changing, and how infectious diseases are rising due to the new roads being built in rural Ecuador.