CHART Services

CHART Services cover 4 broad categories:
Traveler Information| Incident Management| Traffic Monitoring| Traffic Management

Our state-of-the-art command and control center, known as the Statewide Operations Center (SOC) is the “hub” of the CHART program, functioning 24 hours-a-day, 7 days a week with 3 satellite Traffic Operations Centers (TOCs) spread across the state to handle peak-period traffic.

Traveler Information

GPS, traffic signals and incidents feed into live traffic data applications. MD511

Incident Response and Management

CHART Emergency Traffic Patrols (ETPs) have been helping broken-down motorists and assisting police at incidents since the 1980s. The ETP’s primary function is traffic incident management to enhance responder safety, coordinate the quick clearance of Maryland’s travel lanes, improve interagency communications and reduce secondary crashes. In 2011, MDOT SHA entered into an innovative sponsorship by State Farm Insurance to expand the ETP fleet. The sponsorship provides funding for vehicles, the hiring of drivers, safety equipment, and adding promotional signage along Maryland’s interstates.

CHART’s incident management services are a multi-agency effort.
Over 40 emergency responders working 24/7 covering 2000 miles of road

Over 40 Emergency Responder Technicians working 24/7 covering 2000 miles of road. Operating in partnership with the Maryland Department of Transportation (MDOT), the Maryland Transportation Authority (MTA) and the Maryland State Police.

ETPs and ERTs Driver Impact
Emergency Traffic Patrols (ETPs) and Emergency Responder Technicians (ERTs) Driver Impact

Emergency Traffic Patrols (ETPs) and Emergency Responder Technicians (ERTs) provide over 1.5 billion dollars in fuel savings annually. They assist motorists every 16 minutes and manage a traffic incident every 22 minutes. They prevent between 225 and 250 secondary incidents annually.

Traffic Monitoring

CHART uses a combination of monitoring tools including traffic speed detectors, traffic counting devices, CCTV cameras, pavement weather sensors, and field unit reports to assess and report real-time traffic flow.

Speed detectors
Traffic counting
CCTV cameras
Weather sensors
Field reports

Traffic Management

The CHART system strives to manage freeway and arterial traffic flows with the goal of greater efficiency and safety.

  • Statewide arterial signal systems provide:
  • - Remote and adaptive traffic signal control
  • - Coordinated signal timing

In 2011, MDOT SHA entered into an innovative sponsorship by State Farm Insurance to expand the ETP fleet. Additional funding was made available as a result of the sponsorship, which provides funding for vehicles, the hiring of drivers, safety equipment, and signage along Maryland’s interstates promoting the sponsorship. For more information about State Farm sponsorships, go to www.assistpatrol.com.