Road Standards
Roads form the backbone of the transportation system in the United States. With the development of the Interstate Highway System in the 1950s, the focus of mobility shifted to the automobile. The result is a hierarchy of roadway classifications that form an integrated network for automobile travel
Flexibility in Highway Design, US DOT
Click here to view all Lending Library publications.
Links
Nashua Regional Planning Commission
9 Executive Park Drive, Suite 201
Merrimack, NH 03054
Phone ~ 603.424.2240 | Fax ~ 603.424.2230