Highway Notification Numbers
Original source: Missouri Highway Patrol, June 2000. Updated here
Although 911 has been designated as the "official" number for reporting emergencies in the United States, many other numbers have been implemented for reporting highway situations: accidents, intoxicated drivers (DUIs), or disabled vehicles. In most cases, dialing these special numbers routes the call to the agency with jurisdiction over the state highways or Interstates, rather than to the local law enforcement agency.
This map shows alternate telephone numbers established by the states to reach a state-level law enforcement agency to report highway situations, some of which could be considered "urgent." These numbers were generally established before the wide implementation of the 9-1-1 emergency number. The numbers also are routed to various types of agencies, some of which may not be first responders—police, fire or EMS—but rather highway departments.
Adding to the confusion, if you're traveling adjacent to a state boundary such as Virginia, Maryland and DC, dialing one of these special numbers could connect you with... well, who knows which state or agency you'd hear on the phone? That's the disadvantage of non-standard numbers, and of wireless phones whose signal can go in all directions.
Therefore, you are advised to dial 9-1-1 to report emergencies, especially from a cellular phone.
This map was originally developed by the Missouri Highway Patrol, and has been periodically updated by DISPATCH Magazine On-Line. Let us know of any errors or changes.
Some of the alternate uses for the above numbers include: