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