DOT HS 810 614

Appendix: List of All States Used in the Analyses*

State	GDL Effective Date
Alabama	10/1/2002
Arizona	None
Arkansas	7/1/2002
California	7/1/1998
Colorado	7/1/1999
Connecticut	10/1/2003
Delaware	7/1/1999
Florida	7/1/1996
Georgia	7/1/1997
Idaho	1/1/2001
Illinois	1/1/1998
Indiana	1/1/1999
Iowa	1/1/1999
Kansas	None
Kentucky	None
Louisiana	1/1/1998
Maryland	7/1/1999
Massachusetts	11/4/1998
Michigan	4/1/1997
Minnesota	1/1/1999
Mississippi	7/1/2000
Missouri	1/1/2001
Montana	None
Nebraska	1/1/1999
Nevada	7/1/2001
New Jersey	1/1/2001
New Mexico	1/1/2000
New York	9/1/2003
North Carolina	12/1/1997
North Dakota	None
Ohio	1/1/1999
Oklahoma	None
Oregon	3/1/2000
Pennsylvania	12/22/1999
South Carolina	7/1/1998
South Dakota	1/1/1999
Tennessee	7/1/2001
Texas	1/1/2002
Vermont	7/1/2000
Washington	7/1/2001
West Virginia	1/1/2001
Wisconsin	7/1/2000
Wyoming	None

*The District of Columbia was excluded from analysis since its crash data was heavily influenced by neighboring States. Maine , New Hampshire , Rhode Island , Utah , and Virginia were excluded because they changed their laws more than twice between 1994 and 2004. Alaska and Hawaii were also not included in the analyses.