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 …

Highway Message Signs View current highway advisory messages from CHART dynamic message signs.

The Maryland State Police (MSP) declares snow emergencies with input from MD State Highway Administration. Once a snow emergency is declared, the law requires certain precautions.

State of Maryland CHARTWeb web site Customer Service Promise The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and …

State of Maryland CHARTWeb web site The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, …

Any event managed by CHART system that closes a travel lane (s) on the highway system. These events contain vehicle accidents, tractor trailer incidents, debris in roadway.

Local Weather Station Data View current weather data from CHART System Weather Stations Snow Emergency Plans View the latest list of Snow Emergency Plans in effect Traffic …

Maryland Department of Transportation Coordinated Highways Action Response Team Data Feeds Welcome to the CHART WEB Data Feeds. We provide data in two formats, JSON and …

The Roadway Weather Information System (RWIS) consists of full Weather stations reporting Atmospheric and Pavement conditions and Non-Invasive Roadway Sensors (NIRS) which …

State of Maryland CHARTWeb web site The Live cameras are for viewing current traffic conditions only. We do not store any images or video from the live cameras; therefore we are …