Regulations, restrictions and road conditions

Alabama Department of Transportation
http://www.dot.state.al.us/

Arizona Department of Transportation
http://www.azdot.gov/

Arkansas State Highway and Transportation Department
http://www.arkansashighways.com/

California Department of Transportation
http://www.dot.ca.gov/

Colorado Department of Transportation
http://www.coloradodot.info/

Connecticut Department of Transportation
http://www.ct.gov/dot/site/default.asp

Delaware Department of Transportation
http://www.deldot.gov/

Department of economic development & transportation of Nunavut
http://www.edt.gov.nu.ca/apps/authoring/dspPage.aspx?page=home

District of Columbia Department of Transportation
http://ddot.dc.gov/DC/DDOT/

District of Columbia Department of Transportation
http://ddot.dc.gov/DC/DDOT/

Florida Department of Transportation
http://www.dot.state.fl.us/

Georgia Department of Transportation
http://www.dot.state.ga.us/Pages/default.aspx

Governement of Nova Scotia Highways
http://www.gov.ns.ca/tran/highways/

Government of Saskatchewan Highways and infrastructure
http://www.highways.gov.sk.ca/

Government of Yukon
http://www.511yukon.ca/

Idaho Transportation Department
http://itd.idaho.gov/

Illinois Department of Transportation
http://www.dot.state.il.us/

Indiana Department of Transportation
http://www.in.gov/indot/

Iowa Department of Transportation
http://www.iowadot.gov/

Kansas Department of Transportation
http://www.ksdot.org/

Kentucky Transportation Cabinet
http://transportation.ky.gov/

Louisiana Department of Transportation and Development
http://www.dotd.louisiana.gov/

Maine Department of Transportation
http://www.maine.gov/mdot/

Manitoba infrastructure and transportation
http://www.gov.mb.ca/mit/

Maryland Department of Transportation
http://www.mdot.maryland.gov/

Massachusetts Department of Transportation
http://www.massdot.state.ma.us/main/main.aspx

Michigan Department of Transportation
http://www.michigan.gov/mdot/

Ministry of Transport and Infrastructure of British - Columbia
http://www.th.gov.bc.ca/permits.htm

Ministry of transportation of Alberta
http://www.transportation.alberta.ca/

Ministry of Transportation of New-Brunswick
http://www.gnb.ca/0113/index-e.asp

Ministry of transportation of Ontario
http://www.mto.gov.on.ca/english/

Ministry of Transportation of Quebec
http://www.mtq.gouv.qc.ca/portal/page/portal/accueil_en

Minnesota Department of Transportation
http://www.dot.state.mn.us/

Mississippi Department of Transportation
http://www.gomdot.com/Home/Home.aspx

Missouri Department of Transportation
http://www.modot.mo.gov/

Montana Department of Transportation
http://www.mdt.mt.gov/

Nebraska Department of Roads
http://www.mdt.mt.gov/

Nevada Department of Transportation
http://www.nevadadot.com/

New Hampshire Department of Transportation
http://www.nh.gov/dot/

New Mexico Department of Transportation
http://www.nmshtd.state.nm.us/

New York State Department of Transportation
https://www.nysdot.gov/index

Newfoundland Labrador Department of transportation and works
http://www.tw.gov.nl.ca/

North Carolina Department of Transportation
http://www.ncdot.org/

North Dakota Department of Transportation
http://www.dot.nd.gov/

Northwest Territories Transportation
http://www.dot.gov.nt.ca/_live/pages/wpPages/home.aspx

Ohio Department of Transportation
http://www.dot.state.oh.us/Pages/Home.aspx

Oklahoma Department of Transportation
http://www.okladot.state.ok.us/

Oregon Department of Transportation
http://www.oregon.gov/ODOT/

Pennsylvania Department of Transportation
http://www.dot.state.pa.us/

Prince Edward Island Transportation and infrastructure renewal
http://www.gov.pe.ca/tir/index.php3

South Carolina Department of Transportation
http://www.dot.state.sc.us/

South Dakota Department of Transportation
http://www.sddot.com/

State of New Jersey Department of Transportation
http://www.state.nj.us/transportation/

State of Rhode Island Department of Transportation
http://www.dot.state.ri.us/

Tennessee Department of Transportation
http://www.tdot.state.tn.us/

Texas Department of Transportation
http://www.txdot.gov/

Transport Canada
http://www.tc.gc.ca/eng/tc-main.htm

U.S. Department of Transportation
http://www.dot.gov/

Utah Department of Transportation
http://www.udot.utah.gov/main/f?p=100:6:0::::V,T:,1

Vermont Agency of Transportation
http://www.aot.state.vt.us/

Virginia Department of Transportation
http://www.virginiadot.org/default_noflash.asp

Washington State Department of Transportation
http://www.wsdot.wa.gov/

West Virginia Department of Transportation
http://www.transportation.wv.gov/Pages/default.aspx

Wisconsin Department of Transportation
http://www.dot.state.wi.us/

Wyoming Department of Transportation
http://www.dot.state.wy.us/wydot/