511 —”America’s Traveler Information Telephone Number”, providing current road conditions and construction datas.
About half the states currently have working 511 systems statewide or in some cities/areas. Almost all states have received funding to set up 511 systems.
Some states have special numbers (starts with 77) for calling the police or (start with 47) for highway patrol.
Alabama: Cellphone-only: *HP (star 47)
Alaska: 911
Arizona: 911
Arkansas: 911 or Cellphone-only: *55 (star 55)
California: 911
Colorado: 911 or Cellphone-only: *CSP (star 277) or *DUI (star 384) —to report DUIs
Connecticut: 911 or (800-443-6817)
Delaware: 911
Florida: 911 or 800-459-6861 or Cellphone-only: *FHP (star 347)
Georgia: 911 or Cellphone-only: *GSP (star 477)
Hawaii: 911
Idaho: 911 or 800-233-1212 or Cellphone-only: *ISP (star 477)
Illinois: 911 or Cellphone-only: *999 (star 999)
Indiana: 911
Iowa: 911 or 800-555-HELP (800-555-4357)
Kansas: 911 (Statewide) or Cellphone-only: *HP (star 47 for Salina, KS;
*KTA (*482) —Kansas Turnpike and for Wichita, KS
Kentucky: 911 or 800-222-5555
Louisiana: 911 or Cellphone-only: *LHP (star 547);
Lake Ponchartrain Causeway: *27 (star 27 —cellphone-only) or 504-893-6250
Maine: 911 or Cellphone-only: *SP (star 77)
Maryland: 911 or Cellphone-only: #SP (pound 77)
Massachusetts: Cellphones: *MSP (star 677) – in the 413 areacode; *SP (star 77) —outside the 413 areacode
Michigan: 911
Minnesota: 911
Mississippi: Cellphone only: *HP (star 47)
Missouri: Cellphone-only: *55 (star 55) or 800-525-5555
Montana: 911 (emergency only) or 800-525-5555 (non-emergency)
Nebraska: 911 or 800-525-5555 or Cellphone-only:*55 (star 55)
Nevada: 911 or Cellphone-only:*NHP (star 647)
New Hampshire: 911 or 800-622-2394 or Cellphone-only: *SP (star 77)
New Jersey: 911 or Cellphone-only: #77 (pound 77 —to report aggressive driving)
New Mexico: 911 or 505-827-9301
New York: 911
North Carolina: Cellphone only: *HP (star 47) or 800-662-7956
North Dakota: 911
Ohio: 911 or 800-525-5555 (OHP) or 800-877-7PATROL (Ohio only, to report non-emergency safety concerns) or 800-GRAB-DUI (to report erratic driving)
Oklahoma: Cellphone-only *55 (star 55)
Oregon: 911
Pennsylvania: 911 or Cellphone-only: *11 (star 11) —on turnpikes
Rhode Island: 911 or 401-444-1069
South Carolina: Cellphone only: *HP (star 47)
South Dakota: 911
Tennessee: Cellphone-only: *THP (star 847) or 615-741-2060
Texas: 911 or 800-525-5555 or Cellphone-only: *DPS (star 377)
Utah: 911 or Cellphone-only: *11 (star 11)
Vermont: 911 or DWI Hotline: 800-GETADWI and *DWI (star 394 —cellphone-only)
Virginia: 911 or Cellphone-only: #SP (pound 77)
U.S. Virgin Islands: 911
Washington: 911
West Virginia: Cellphone-only: *SP (star 77)
Wisconsin: 911
Wyoming: Cellphone only: #HELP (pound 4357) or 800-442-9090
When in doubt:
0 (zero) —Operator assistance
411 —local directory assistance
(area code) + 555-1212 —non-local directory assistance
sources:
http://www.ou.edu/police/dpsinfo/state-by-state-cellphone-highway-emergency-assistance-numbers.html