States with primary enforcement laws have lower fatality rates
|Format:||Government Document Electronic eBook|
Washington, D.C. :
NHTSA's National Center for Statistics and Analysis,
|Series:||Traffic safety facts. Research note
|Item Description:||Title from title screen (viewed on Aug. 7, 2008).|
Updated by DOT HS 810 921, issued in February 2008.
"DOT HS 810 557."
|Physical Description:||5 p. : digital, PDF file.|
|Format:||Mode of access: Internet via the NHTSA web site. Address as of 08/07/08: http://www-nrd.nhtsa.dot.gov/Pubs/810557.PDF ; current access available via PURL.|