Safety effects of the conversion of rural two-lane roadways to four-lane roadways [microform]
Subtitle: summary report.
Contributors: United States. Federal Highway Administration
Publisher: Federal Highway Administration
Published: 1999
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Roads -- Widening -- United States.; Rural roads -- United States -- Safety measures.; Traffic safety -- Research -- United States.
Other titles: Highway Safety Information System
Notes: Shipping list no.: 2000-0280-M.

Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., [2000] 1 microfiche : negative. Header title: Highway Safety Information System .... Microfiche reproduction has pages out of order.