historical_traffic_flow_state
This data flow is used within the Manage Traffic function. It contains data showing the current traffic flow conditions on roads (surface streets), freeways and ramps served by the function. It also includes flows in high occupancy vehicle (hov) lanes from the same area. The data is a subset of that in the current and historical data stores and is used as a means of 'packaging' the data for distribution to users such as ISP's. The data flow consists of the following data items each of which is defined in its own DDE:
ramp_signal_state
+ current_roadway_network_data
+ current_road_network_use
+ hov_lane_data
+ link_data_from_tags
Sub Data Flows
- current_road_network_use
- current_roadway_network_data
- hov_lane_data
- link_data_from_tags
- ramp_signal_state
Parent Data Flows
- long_term_data
- long_term_data_for_exchange
- long_term_data_for_output
- long_term_data_for_prediction
- other_long_term_data
Associated PSpecs
- None