Dynamic Coordination— Corridor-Based Signal Coordination
Manage Junctions Together and Regulate Traffic Flow Along the Corridor
ISSD Dynamic Coordination is an advanced traffic management solution that enables multiple signalized junctions along the same traffic corridor to be managed together according to real-time traffic conditions.
In conventional coordination systems, junctions generally operate with predefined cycle lengths, phase sequences, and offset values. ISSD Dynamic Coordination jointly evaluates information from traffic analytics cameras and Floating Car Data sources on the MANGO Traffic Management Platform; the resulting decisions are transferred to junction controllers through CENTRIS Dynamic Junction Control Units.
Corridor-Based Dynamic Signal Coordination
Dynamic Coordination is a corridor-based traffic management solution that adjusts the cycle lengths, green times, and timing differences between signalized junctions along a traffic corridor according to current traffic conditions. Its primary objective is to help vehicles leaving one junction reach the next at the appropriate time and proceed along the main traffic direction with fewer stops.
For this purpose, the system monitors instantaneous density around junctions, evaluates average speed and travel times between junctions, analyzes queues on approach and exit directions, checks the discharge condition of junctions, adjusts coordination plans according to traffic conditions, and switches junctions to isolated dynamic management when necessary.
From corridor data to signal operation, step by step
Ecosystem Connection
Key features
Dynamic Coordination evaluates camera, FCD, and exit data within a single decision structure at corridor scale.
Key Features
Decision Structure According to Traffic Conditions
The system applies different coordination decisions according to the corridor’s real-time condition.
Advantages
ISSD Dynamic Coordination aims to reduce stops and create a more orderly flow by managing junctions together at corridor scale.
Frequently Asked Questions
What does Dynamic Coordination do? +
It enables multiple signalized junctions along the same corridor to operate together according to traffic conditions.
What is the difference between Dynamic Coordination and a green wave? +
A conventional green wave generally relies on fixed speed and offset values. Dynamic Coordination can modify or temporarily terminate the green-wave plan according to speed, travel time, queue, and occupancy data.
Which data does the system use? +
Vehicle count, density, and occupancy from traffic analytics cameras, and average speed and travel time from Floating Car Data.
How is travel time between junctions determined? +
Average travel time is generated by evaluating vehicle movements measured on road segments between two junctions through Floating Car Data.
Can the system change the coordination plan? +
Yes. Cycle length, green times, and offset values between junctions can be adjusted according to traffic conditions.
Can junctions be switched to independent operation? +
Yes. When corridor flow deteriorates, the relevant junctions can be temporarily switched to isolated dynamic junction management.
What happens when traffic returns to normal? +
When average speed, travel time, and queue values return to appropriate levels, the junctions can be switched back to coordinated operation.
Does Dynamic Coordination directly operate the traffic signals? +
Coordination and signal plan decisions are generated on MANGO. These decisions are transferred to the junction controller through CENTRIS, and the traffic signals are operated by the junction controller.
Does the system evaluate only one junction? +
No. The system also evaluates the effect of a change at one junction on downstream junctions and on overall traffic flow along the corridor.
What is the key differentiator of Dynamic Coordination? +
Its key differentiator is the ability to use camera, Floating Car Data, and junction exit data together and switch between fixed coordination and isolated dynamic management according to traffic conditions.