The Maryland Department of Transportation strongly urges all drivers to never use this website while operating a motor vehicle. This warning supports the Maryland driving laws that now prohibit the use of text messaging devices while driving.

CHART is a joint effort of the Maryland Department of Transportation (MDOT), Maryland Transportation Authority (MDTA) and the Maryland State Police (MSP), in cooperation with other federal, state and local agencies. CHART's mission is to improve "real-time" operations of Maryland's highway system through teamwork and technology.

CHART Web Mobile is a site designed for use by internet accessible mobile devices that format the information found on http://chart.maryland.gov The Maryland Department of Transportation provides real time traffic and roadway information to the public in an effort to help commuters with incident and congestion management.