The Office of Transportation Mobility and Operations (OTMO) CHART Systems Division is responsible for the design, build, maintenance and daily operational support of statewide traffic management and emergency operations systems. CHART systems have evolved into a coordination focal point, able to identify incidents, congestion, construction, road closures and other emergency conditions.


Advanced Traffic Management System (ATMS)

The ATMS is used to identify and track traffic flow disruptions using Closed Circuit TV (CCTV), Traffic Sensor Systems (TSSs – microwave traffic flow detectors) and remote weather stations. The system enables personnel to send responders to correct disruptions and to notify the public using Dynamic Messaging Signs (DMSs) and Highway Advisory Radio (HAR) devices. Notifications are sent to the media and feed data provided to the live traffic web site ( and Maryland 511

Contact Us

Rick Dye, Chief, CHART Systems Division
Phone: 410-582-5619, Fax: 410-582-9880