1.2.1: Select Strategy
This process shall select the appropriate traffic control strategy to be implemented over a road and/or freeway section served by the specific instance of the Manage Traffic function. The strategy shall be selected by the process from a number that are available, e.g., adaptive control, fixed time control, local operations. The selected strategy shall be passed by the process to the actual control processes for implementation according to the part of the network to which it is to be applied, i.e., surface roads, freeways (i.e., limited access roads), ramps and/or parking lots. The definition of strategy can be extended to include a strategy for the operations of sensors such as video cameras used to provide traffic surveillance data. Initial strategies, based on the time of day, may be input by the traffic operations personnel. The process shall make it possible for the current strategy selection to be modified to accommodate the effects of such things as archived and predicted traffic usage, incidents, emergency vehicle preemption, the passage of commercial vehicles with unusual loads, equipment faults and overrides from the traffic operations personnel. The strategy for control of freeways and parking lots is through use of DMS signs and lane indicators. The strategy for control of ramps is through the timing plans for ramp meters. The selected strategy shall be sent to the process within the Provide Traffic Surveillance facility responsible for maintaining the store of long term data.
This process is associated with the Traffic Management Center physical object.
This process is associated with the following functional objects:
- TMC Demand Management Coordination
- TMC Restricted Lanes CV Application
- TMC Reversible Lane Management
- TMC Signal Control
- TMC Traffic Information Dissemination
- TMC Traffic Metering
- TMC Wrong Way Vehicle Warning
This process is associated with the following data flows: