Greater Miami Expressway (GMX) Agency

Description: The Greater Miami Expressway (GMX) Agency, formerly known as the Miami–Dade Expressway Authority (MDX), is a state–sanctioned, locally administered, public agency responsible for the operation and maintenance of five major expressway facilities in Miami–Dade County, Florida.

Inventory Elements:

• GMX Field Equipment
• GMX MIAMS
• GMX Road Ranger Service Patrol Vehicles
• GMX Roadway Maintenance Systems and Dispatch
• GMX Roadway Maintenance Vehicles
• GMX TMC
• GMX Toll Collection System (MTS)
• GMX Violations Processing Center

Projects:

• SFRTA Secondary Dispatch Relocation

Roles and Responsibilities:

Electronic Toll Collection for Southeast Florida Regional ITS Architecture - FDOT Districts 4 and 6
• Operate toll collection equipment on GMX toll roads.
• Provide customer account information using a Web site.
• Coordinate with other toll agencies using a reciprocity network for electronic toll payment collections.
• Coordinate with the FDHSMV and county courts to collect tolls from violators.
• Operate a customer service center to process toll transactions and handle violations processing.
• Operate and manage GMX Express Lanes.

Highway Management for Southeast Florida Regional ITS Architecture - FDOT Districts 4 and 6
• Collect road weather information.
• Control highway traffic with lane control signals, including reversible lanes.
• Determine highway travel times.
• Provide traffic information reports to other agencies.
• Monitor highway surveillance cameras.
• Monitor highway traffic sensors.
• Operate freeway traffic information devices, such as DMS and HAR equipment.
• Operate express lanes on GMX highways.

Incident Management (Traffic and Maintenance) for Southeast Florida Regional ITS Architecture - FDOT Districts 4 and 6
• Perform network surveillance for incident detection and verification, and send traffic/incident information and traffic images to public safety agencies and EOCs.
• Coordinate incident response for incidents on or adjacent to state-owned roadways with public safety in surrounding counties and municipalities, including county and local EOCs.
• Provide incident information to other traffic management and public safety agencies.
• Coordinate incident response with county and local public works departments, including response for scheduled events.
• Provide incident information to travelers on state-owned roadways using traffic information devices (e.g., DMS and HAR units), local ISPs, and Web sites.
• Coordinate maintenance resource response to incidents on state-owned roadways with the FHP, and county and local public safety agencies.
• Operate and dispatch Road Rangers Service Patrol vehicles.

Information Dissemination for Southeast Florida Regional ITS Architecture - FDOT Districts 4 and 6
• Coordinate emergency plans, and incident responses and resources with the county EOC/warning points.
• Coordinate evacuation and re-entry plans with the county EOC/warning point.
• Provide traffic and road network information to local transit agencies, including the MDTA.
• Provide traffic information to travelers using GMX DMS equipment.
• Provide traffic information to travelers using GMX public information systems, private companies, Florida 511, and the media.

Maintenance and Construction for Southeast Florida Regional ITS Architecture - FDOT Districts 4 and 6
• Receive maintenance resource requests for incident response from county fire/EMS/sheriff, local police/fire/EMS, the FHP, and 911 emergency call centers.
• Provide environmental data to private weather providers; RTMCs; regional emergency management agencies and transit agencies; and county and city maintenance sections.
• Coordinate maintenance resources for incidents with the FDOT District maintenance and construction operations.
• Provide maintenance and construction information to FDOT District 6 maintenance and construction operations; regional maintenance and construction operations; and the traveling public using portable DMS equipment.
• Coordinate with city and county maintenance and construction systems, and the FDOT District maintenance and construction sections.
• Distribute work zone information to local transit agencies, local emergency management agencies, private rail operations, the media, and multimodal service providers.