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Welcome to Maryland 511 and CHARTWeb!

CHART Web is Maryland's official 511 Traveler Information service. Maryland 511 provides travelers with reliable, current traffic and road closure information, as well as weather related traffic events and conditions. MD 511 helps motorists reach their destination in the most safe and efficient manner when traveling in Maryland.


CHART Web maintenance on Tuesday, May 11th between

10:00AM and 12:00PM. Site video and data feeds may be unavailable during this time.


disclaimer graphic CHART Web Data Disclaimer

  • Maryland State Highway Administration provides the foregoing information as a public service.
  • This information is published automatically and its accuracy or timeliness cannot be guaranteed.
  • The observation screens are not always automatically refreshed; users of this data should use the refresh or reload capability of their Web browsers to get the most recent observations.
  • This information depends on internet availability, communication networks, and computer equipment which are beyond the control of the Maryland State Highway Administration.
  • The Web links to other internet sites are provided as a service to the traveling public and do not represent Maryland State Highway Administration.
  • References to data containing roadway conditions, traveler information or highway availability, are provided “as is” without warranty of any kind, either express or implied.
  • In no event shall the Maryland State Highway Administration be liable for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use or performance of this information.